Big debtags code simplification

no more indices to maintain, just read the text files
no more int IDs and conversions to/from strings

24 files changed, 309 insertions, 2879 deletions

diff --git a/ept/debtags/debtags.cc b/ept/debtags/debtags.cc
index 331c132..383bb02 100644
--- a/ept/debtags/debtags.cc
+++ b/ept/debtags/debtags.cc
@@ -25,9 +25,10 @@
 
 #include <ept/debtags/debtags.h>
 #include <ept/debtags/maint/path.h>
-#include <ept/debtags/maint/serializer.h>
-#include <ept/debtags/maint/debtagsindexer.h>
+#include <ept/debtags/maint/sourcedir.h>
 
+#include <tagcoll/patch.h>
+#include <tagcoll/coll/simple.h>
 #include <tagcoll/input/stdio.h>
 #include <tagcoll/TextFormat.h>
 
@@ -52,24 +53,17 @@ namespace ept {
 namespace debtags {
 
 Debtags::Debtags(bool editable)
-	: m_coll(m_rocoll)
 {
-	std::string tagfname;
-	std::string idxfname;
+	// Read and merge tag data
+	SourceDir mainSource(Path::debtagsSourceDir());
+	SourceDir userSource(Path::debtagsUserSourceDir());
 
-	if (!DebtagsIndexer::obtainWorkingDebtags(vocabulary(), tagfname, idxfname))
-	{
-		m_timestamp = 0;
-		return;
-	} else {
-		m_timestamp = Path::timestamp(idxfname);
-
-		mastermmap.init(idxfname);
+	mainSource.readTags(inserter(*this));
+	userSource.readTags(inserter(*this));
 
-		// Initialize the readonly index
-		m_pkgid.init(mastermmap, 0);
-		m_rocoll.init(mastermmap, 1, 2);
-	}
+	time_t ts_main_src = mainSource.tagTimestamp();
+        time_t ts_user_src = userSource.tagTimestamp();
+        m_timestamp = ts_main_src > ts_user_src ? ts_main_src : ts_user_src;
 
 	// Initialize the patch collection layer
 	rcdir = Path::debtagsUserSourceDir();
@@ -78,29 +72,23 @@ Debtags::Debtags(bool editable)
 	if (Path::access(patchFile, F_OK) == 0)
 	{
 		input::Stdio in(patchFile);
-		PatchList<int, int> patch;
-		textformat::parsePatch(in, patchStringToInt(m_pkgid, vocabulary(), inserter(patch)));
-		m_coll.setChanges(patch);
+		PatchList<string, string> patch;
+		textformat::parsePatch(in, inserter(patch));
+		applyChange(patch);
 	}
 }
 
-tagcoll::PatchList<std::string, Tag> Debtags::changes() const
+tagcoll::PatchList<std::string, std::string> Debtags::changes() const
 {
-	tagcoll::PatchList<int, int> patches = m_coll.changes();
-	tagcoll::PatchList<std::string, Tag> res;
-
-	for (tagcoll::PatchList<int, int>::const_iterator i = patches.begin();
-			i != patches.end(); ++i)
-	{
-		std::string pkg = packageByID(i->second.item);
-		if (pkg.empty())
-			continue;
-
-		res.addPatch(tagcoll::Patch<std::string, Tag>(pkg,
-			vocabulary().tagsByID(i->second.added),
-			vocabulary().tagsByID(i->second.removed)));
-	}
-
+	// Read original tag data
+	SourceDir mainSource(Path::debtagsSourceDir());
+	SourceDir userSource(Path::debtagsUserSourceDir());
+	coll::Simple<string, string> orig;
+	mainSource.readTags(inserter(orig));
+	userSource.readTags(inserter(orig));
+
+	tagcoll::PatchList<std::string, std::string> res;
+	res.addPatch(orig, *this);
 	return res;
 }
 
@@ -136,7 +124,7 @@ bool Debtags::hasTagDatabase()
 void Debtags::savePatch()
 {
 	PatchList<std::string, std::string> spatch;
-	m_coll.changes().output(patchIntToString(m_pkgid, vocabulary(), tagcoll::inserter(spatch)));
+	changes().output(tagcoll::inserter(spatch));
 	savePatch(spatch);
 }
 
@@ -166,30 +154,16 @@ void Debtags::savePatch(const PatchList<std::string, std::string>& patch)
 	}
 }
 
-void Debtags::savePatch(const PatchList<std::string, Tag>& patch)
-{
-	PatchList<std::string, std::string> spatch;
-	// patch.output(patchToString<C>(m_pkgs, m_pkgidx, m_tags, tagcoll::inserter(spatch)));
-	savePatch(spatch);
-}
-
 void Debtags::sendPatch()
 {
 	PatchList<std::string, std::string> spatch;
-	m_coll.changes().output(patchIntToString(m_pkgid, vocabulary(), tagcoll::inserter(spatch)));
+	changes().output(tagcoll::inserter(spatch));
 	if (!spatch.empty())
 	{
 		sendPatch(spatch);
 	}
 }
 
-void Debtags::sendPatch(const PatchList<std::string, Tag>& patch)
-{
-	PatchList<std::string, std::string> spatch;
-	// patch.output(patchToString<C>(m_pkgs, m_pkgidx, m_tags, tagcoll::inserter(spatch)));
-	sendPatch(spatch);
-}
-
 void Debtags::sendPatch(const PatchList<std::string, std::string>& patch)
 {
 	static const char* cmd = "/usr/sbin/sendmail -t";
@@ -226,24 +200,13 @@ void Debtags::sendPatch(const PatchList<std::string, std::string>& patch)
 	}
 }
 
-
-template<typename OUT>
-void Debtags::outputSystem(const OUT& cons)
-{
-	m_rocoll.output(intToPkg(m_pkgid, vocabulary(), cons));
-}
-
-template<typename OUT>
-void Debtags::outputPatched(const OUT& cons)
-{
-	m_coll.output(intToPkg(m_pkgid, vocabulary(), cons));
-}
-
 }
 }
 
+#include <ept/debtags/maint/sourcedir.tcc>
 #include <tagcoll/patch.tcc>
-#include <tagcoll/coll/patched.tcc>
+#include <tagcoll/coll/simple.tcc>
+#include <tagcoll/coll/fast.tcc>
 #include <tagcoll/TextFormat.tcc>
 //#include <tagcoll/stream/filters.tcc>
 
diff --git a/ept/debtags/debtags.h b/ept/debtags/debtags.h
index c46786e..619cb15 100644
--- a/ept/debtags/debtags.h
+++ b/ept/debtags/debtags.h
@@ -26,13 +26,10 @@
 #ifndef EPT_DEBTAGS_DEBTAGS_H
 #define EPT_DEBTAGS_DEBTAGS_H
 
-#include <ept/debtags/tag.h>
 #include <ept/debtags/vocabulary.h>
-#include <ept/debtags/maint/pkgid.h>
 
 #include <tagcoll/coll/base.h>
-#include <tagcoll/coll/intdiskindex.h>
-#include <tagcoll/coll/patched.h>
+#include <tagcoll/coll/fast.h>
 
 namespace ept {
 namespace debtags {
@@ -40,23 +37,6 @@ class Debtags;
 }
 }
 
-namespace tagcoll {
-template< typename _, typename _1 > class PatchList;
-
-namespace coll {
-
-template<>
-struct coll_traits< ept::debtags::Debtags >
-{
-	typedef std::string item_type;
-	typedef ept::debtags::Tag tag_type;
-	typedef std::set< ept::debtags::Tag > tagset_type;
-	typedef std::set< std::string > itemset_type;
-};
-
-}
-}
-
 namespace ept {
 namespace debtags {
 
@@ -65,26 +45,16 @@ namespace debtags {
  *
  * The database is normally found in /var/lib/debtags.
  *
- * Tags and Facets are returned as Tag and Facet objects.  The objects follow
+ * Tags and Facets are returned as std::strings.  The objects follow
  * the flyweight pattern and access the data contained in the Vocabulary
  * instantiated inside Debtags.
  *
  * It is possible to get a reference to the Vocabulary object using the
  * vocabulary() method.
  */
-class Debtags : public tagcoll::coll::Collection<Debtags>
+class Debtags : public tagcoll::coll::Fast<std::string, std::string>
 {
 protected:
-	// Master mmap index container
-	tagcoll::diskindex::MasterMMap mastermmap;
-
-	// Debtags database
-	tagcoll::coll::IntDiskIndex m_rocoll;
-	tagcoll::coll::Patched< tagcoll::coll::IntDiskIndex > m_coll;
-
-	// Package name to ID mapping
-	PkgId m_pkgid;
-
 	// Tag vocabulary
 	Vocabulary m_voc;
 
@@ -94,93 +64,9 @@ protected:
 	// Last modification timestamp of the index
 	time_t m_timestamp;
 
-	std::string packageByID(int id) const
-	{
-		return m_pkgid.byID(id);
-	}
-
-	template<typename IDS>
-	std::set<std::string> packagesById(const IDS& ids) const
-	{
-		std::set<std::string> pkgs;
-		for (typename IDS::const_iterator i = ids.begin();
-				i != ids.end(); ++i)
-			pkgs.insert(packageByID(*i));
-		return pkgs;
-	}
-
-	int idByPackage(const std::string& pkg) const
-	{
-		return m_pkgid.byName(pkg);
-	}
-
-	template<typename PKGS>
-	std::set<int> idsByPackages(const PKGS& pkgs) const
-	{
-		std::set<int> ids;
-		for (typename PKGS::const_iterator i = pkgs.begin();
-				i != pkgs.end(); ++i)
-			ids.insert(idByPackage(*i));
-		return ids;
-	}
-
 public:
-	typedef tagcoll::coll::Patched< tagcoll::coll::IntDiskIndex > coll_type;
-	typedef std::pair< std::string, std::set<Tag> > value_type;
-
-	class const_iterator
-	{
-		const Debtags& coll;
-		Debtags::coll_type::const_iterator ci;
-		mutable const Debtags::value_type* cached_val;
-
-	protected:
-		const_iterator(const Debtags& coll,
-						const Debtags::coll_type::const_iterator& ci)
-			: coll(coll), ci(ci), cached_val(0) {}
-
-	public:
-		~const_iterator()
-		{
-			if (cached_val)
-				delete cached_val;
-		}
-		const Debtags::value_type operator*() const
-		{
-			if (cached_val)
-				return *cached_val;
-
-			return make_pair(coll.packageByID(ci->first), coll.vocabulary().tagsByID(ci->second));
-		}
-		const Debtags::value_type* operator->() const
-		{
-			if (cached_val)
-				return cached_val;
-			return cached_val = new Debtags::value_type(*(*this));
-		}
-		const_iterator& operator++()
-		{
-			++ci;
-			if (cached_val)
-			{
-				delete cached_val;
-				cached_val = 0;
-			}
-			return *this;
-		}
-		bool operator==(const const_iterator& iter) const
-		{
-			return ci == iter.ci;
-		}
-		bool operator!=(const const_iterator& iter) const
-		{
-			return ci != iter.ci;
-		}
-
-		friend class Debtags;
-	};
-	const_iterator begin() const { return const_iterator(*this, m_coll.begin()); }
-	const_iterator end() const { return const_iterator(*this, m_coll.end()); }
+	typedef tagcoll::coll::Fast<std::string, std::string> coll_type;
+	typedef std::pair< std::string, std::set<std::string> > value_type;
 
 	/**
 	 * Create a new accessor for the on-disk Debtags database
@@ -190,8 +76,8 @@ public:
 	 * is true, then the local state directory will be created when the object
 	 * is instantiated.
 	 */
-    Debtags(bool editable = false);
-    ~Debtags() {}
+	Debtags(bool editable = false);
+	~Debtags() {}
 
 	/// Get the timestamp of when the index was last updated
 	time_t timestamp() const { return m_timestamp; }
@@ -199,25 +85,11 @@ public:
 	/// Return true if this data source has data, false if it's empty
 	bool hasData() const { return m_timestamp != 0; }
 
-	coll_type& tagdb() { return m_coll; }
-	const coll_type& tagdb() const { return m_coll; }
-	tagcoll::PatchList<std::string, Tag> changes() const;
+	coll_type& tagdb() { return *this; }
+	const coll_type& tagdb() const { return *this; }
+	tagcoll::PatchList<std::string, std::string> changes() const;
 
 #if 0
-	template<typename ITEMS, typename TAGS>
-	void insert(const ITEMS& items, const TAGS& tags)
-	{
-		for (typename ITEMS::const_iterator i = items.begin();
-				i != items.end(); ++i)
-			m_changes.addPatch(Patch(*i, tags, TagSet()));
-	}
-
-	template<typename ITEMS>
-	void insert(const ITEMS& items, const wibble::Empty<Tag>& tags)
-	{
-		// Nothing to do in this case
-	}
-
 	/**
 	 * Get the changes that have been applied to this collection
 	 */
@@ -239,84 +111,14 @@ public:
 	void addChanges(const Patches& changes);
 #endif
 
-    bool hasTag(const Tag& tag) const { return m_coll.hasTag(tag.id()); }
-
-	std::set<Tag> getTagsOfItem(const std::string& item) const
-	{
-		int id = idByPackage(item);
-		if (id == -1) return std::set<Tag>();
-		return vocabulary().tagsByID(m_coll.getTagsOfItem(id));
-	}
-
-	template<typename ITEMS>
-	std::set<Tag> getTagsOfItems(const ITEMS& items) const
-	{
-		return vocabulary().tagsByID(m_coll.getTagsOfItems(idsByPackages(items)));
-	}
-
-	std::set<std::string> getItemsHavingTag(const Tag& tag) const
-	{
-		return packagesById(m_coll.getItemsHavingTag(tag.id()));
-	}
-	template<typename TAGS>
-	std::set<std::string> getItemsHavingTags(const TAGS& tags) const
-	{
-		std::set<int> itags;
-		for (typename TAGS::const_iterator i = tags.begin();
-				i != tags.end(); ++i)
-			itags.insert(i->id());
-		return packagesById(m_coll.getItemsHavingTags(itags));
-	}
-
 #if 0
 	ItemSet getTaggedItems() const;
 #endif
-	std::set<Tag> getAllTags() const
-	{
-		return vocabulary().tagsByID(m_coll.getAllTags());
-	}
 
 	/// Access the vocabulary in use
-    Vocabulary& vocabulary() { return m_voc; }
+	Vocabulary& vocabulary() { return m_voc; }
 	/// Access the vocabulary in use
-    const Vocabulary& vocabulary() const { return m_voc; }
-
-	/**
-	 * Access the PkgId in use.
-	 *
-	 * \note Future implementations may not rely on a PkgId
-	 */
-	PkgId& pkgid() { return m_pkgid; }
-	/**
-	 * Access the PkgId in use.
-	 *
-	 * \note Future implementations may not rely on a PkgId
-	 */
-	const PkgId& pkgid() const { return m_pkgid; }
-
-	int getCardinality(const Tag& tag) const
-	{
-		return m_coll.getCardinality(tag.id());
-	}
-
-	void applyChange(const tagcoll::PatchList<std::string, Tag>& change)
-	{
-		using namespace tagcoll;
-		PatchList<int, int> intp;
-		for (PatchList<std::string, Tag>::const_iterator i = change.begin();
-				i != change.end(); ++i)
-		{
-			Patch<int, int> p(idByPackage(i->first));
-			for (std::set<Tag>::const_iterator j = i->second.added.begin();
-					j != i->second.added.end(); ++j)
-				p.add(j->id());
-			for (std::set<Tag>::const_iterator j = i->second.removed.begin();
-					j != i->second.removed.end(); ++j)
-				p.remove(j->id());
-			intp.addPatch(p);
-		}
-		m_coll.applyChange(intp);
-	}
+	const Vocabulary& vocabulary() const { return m_voc; }
 
 #if 0
 	template<typename OUT>
@@ -352,12 +154,6 @@ public:
 	void savePatch(const tagcoll::PatchList<std::string, std::string>& patch);
 
 	/**
-	 * Save in the state storage directory a patch to turn the system database
-	 * into the collection given
-	 */
-	void savePatch(const tagcoll::PatchList<std::string, Tag>& patch);
-
-	/**
 	 * Send to the central archive a patch that can be used to turn
 	 * the system database into the collection given
 	 */
@@ -369,13 +165,7 @@ public:
 	void sendPatch(const tagcoll::PatchList<std::string, std::string>& patch);
 
 	/**
-	 * Send the given patch to the central archive
-	 */
-	void sendPatch(const tagcoll::PatchList<std::string, Tag>& patch);
-
-
-	/**
-	 * Output the current Debian tags database to a consumer of <std::string, Tag>
+	 * Output the current Debian tags database to a consumer of <std::string, std::string>
 	 *
 	 * \note The collection is sent to 'cons' without merging repeated items
 	 */
@@ -383,7 +173,7 @@ public:
 	void outputSystem(const OUT& cons);
 
 	/**
-	 * Output the given tag file to a consumer of <std::string, Tag>
+	 * Output the given tag file to a consumer of <std::string, std::string>
 	 *
 	 * \note The collection is sent to 'cons' without merging repeated items
 	 */
@@ -392,7 +182,7 @@ public:
 
 	/**
 	 * Output the current Debian tags database, patched with local patch,
-	 * to a Consumer of <std::string, Tag>
+	 * to a Consumer of <std::string, std::string>
 	 *
 	 * \note The collection is sent to 'cons' without merging repeated items
 	 */
@@ -401,7 +191,7 @@ public:
 
 	/**
 	 * Output the given tag file, patched with local patch,
-	 * to a Consumer of <std::string, Tag>
+	 * to a Consumer of <std::string, std::string>
 	 *
 	 * \note The collection is sent to 'cons' without merging repeated items
 	 */
diff --git a/ept/debtags/debtags.tcc b/ept/debtags/debtags.tcc
index 0963d09..48f80fb 100644
--- a/ept/debtags/debtags.tcc
+++ b/ept/debtags/debtags.tcc
@@ -27,8 +27,10 @@
 #define EPT_DEBTAGS_DEBTAGS_TCC
 
 #include <ept/debtags/debtags.h>
-#include <ept/debtags/maint/serializer.h>
+#include <ept/debtags/maint/path.h>
+#include <ept/debtags/maint/sourcedir.h>
 
+#include <tagcoll/coll/simple.h>
 #include <tagcoll/input/stdio.h>
 #include <tagcoll/stream/patcher.h>
 #include <tagcoll/TextFormat.h>
@@ -39,50 +41,60 @@ namespace debtags {
 template<typename OUT>
 void Debtags::outputSystem(const OUT& cons)
 {
-	m_rocoll.output(intToPkg(m_pkgid, vocabulary(), cons));
+	// Read and merge tag data
+	SourceDir mainSource(Path::debtagsSourceDir());
+	SourceDir userSource(Path::debtagsUserSourceDir());
+	tagcoll::coll::Simple<string, string> merged;
+	mainSource.readTags(inserter(merged));
+	userSource.readTags(inserter(merged));
+	merged.output(cons);
 }
 
+
 template<typename OUT>
 void Debtags::outputSystem(const std::string& filename, const OUT& out)
 {
 	if (filename == "-")
 	{
 		tagcoll::input::Stdio input(stdin, "<stdin>");
-		tagcoll::textformat::parse(input, ept::debtags::stringToPkg(m_pkgid, m_voc, out));
+		tagcoll::textformat::parse(input, out);
 	}
 	else
 	{
 		tagcoll::input::Stdio input(filename);
-		tagcoll::textformat::parse(input, ept::debtags::stringToPkg(m_pkgid, m_voc, out));
+		tagcoll::textformat::parse(input, out);
 	}
 }
 
 template<typename OUT>
 void Debtags::outputPatched(const OUT& cons)
 {
-	m_coll.output(intToPkg(m_pkgid, vocabulary(), cons));
+	output(cons);
 }
 
 template<typename OUT>
 void Debtags::outputPatched(const std::string& filename, const OUT& out)
 {
-	const tagcoll::PatchList<string, Tag>& patch = m_coll.changes();
+	const tagcoll::PatchList<string, string>& patch = changes();
 	if (filename == "-")
 	{
 		tagcoll::input::Stdio input(stdin, "<stdin>");
-		tagcoll::textformat::parse(input, ept::debtags::stringToPkg(m_pkgid, m_voc, patcher(patch, out)));
+		tagcoll::textformat::parse(input, patcher(patch, out));
 	}
 	else
 	{
 		tagcoll::input::Stdio input(filename);
-		tagcoll::textformat::parse(input, ept::debtags::stringToPkg(m_pkgid, m_voc, patcher(patch, out)));
+		tagcoll::textformat::parse(input, patcher(patch, out));
 	}
 }
 
 }
 }
 
-#include <tagcoll/coll/patched.tcc>
+#include <ept/debtags/maint/sourcedir.tcc>
+#include <tagcoll/coll/simple.tcc>
+#include <tagcoll/coll/fast.tcc>
+#include <tagcoll/patch.tcc>
 
 #endif
 
diff --git a/ept/debtags/debtags.test.h b/ept/debtags/debtags.test.h
index f360cc6..9f99cd2 100644
--- a/ept/debtags/debtags.test.h
+++ b/ept/debtags/debtags.test.h
@@ -29,6 +29,7 @@
 
 #include <tagcoll/coll/simple.h>
 #include <tagcoll/stream/sink.h>
+#include <tagcoll/patch.h>
 
 #include <wibble/operators.h>
 
@@ -73,8 +74,8 @@ struct TestDebtags : DebtagsTestEnvironment
 
 	Test _2()
 {
-    string p("debtags");
-	std::set<Tag> tags = debtags.getTagsOfItem(p);
+	string p("debtags");
+	std::set<std::string> tags = debtags.getTagsOfItem(p);
 	assert( !tags.empty() );
 
 #if 0
@@ -87,26 +88,26 @@ struct TestDebtags : DebtagsTestEnvironment
 #endif
 
 	assert_eq( tags.size(), 8u );
-	assert( voc().tagByName( "devel::buildtools" ) <= tags );
-	assert( voc().tagByName( "implemented-in::c++" ) <= tags );
-	assert( voc().tagByName( "interface::commandline" ) <= tags );
-	assert( voc().tagByName( "role::program" ) <= tags );
-	assert( voc().tagByName( "scope::application" ) <= tags );
-	assert( voc().tagByName( "suite::debian" ) <= tags );
-	assert( voc().tagByName( "use::searching" ) <= tags );
-	assert( voc().tagByName( "works-with::software:package" ) <= tags );
+	assert( tags.find("devel::buildtools") != tags.end() );
+	assert( tags.find("implemented-in::c++") != tags.end() );
+	assert( tags.find("interface::commandline") != tags.end() );
+	assert( tags.find("role::program") != tags.end() );
+	assert( tags.find("scope::application") != tags.end() );
+	assert( tags.find("suite::debian") != tags.end() );
+	assert( tags.find("use::searching") != tags.end() );
+	assert( tags.find("works-with::software:package") != tags.end() );
 }
 
 	Test _3()
 {
 	using namespace std;
 
-    /* Get the 'debtags' package */
-    string p("debtags");
+	/* Get the 'debtags' package */
+	string p("debtags");
 
-    /* Get its tags */
-	std::set<Tag> tags = debtags.getTagsOfItem(p);
-    assert(!tags.empty());
+	/* Get its tags */
+	std::set<std::string> tags = debtags.getTagsOfItem(p);
+	assert(!tags.empty());
 
 	/*
 	cerr << "Intersection size: " << endl;
@@ -162,15 +163,14 @@ struct TestDebtags : DebtagsTestEnvironment
     assert( p <= packages );
 
     /* Get one of the tags of 'debtags' */
-    Tag tag = *tags.begin();
-    assert(tag);
+    std::string tag = *tags.begin();
 
     /* Get its items */
     {
         /* Need this workaround until I figure out how to tell the new GCC
          * that TagDB is a TDBReadonlyDiskIndex and should behave as such
          */
-		std::set<Tag> ts;
+		std::set<std::string> ts;
 		ts.insert(tag);
         packages = debtags.getItemsHavingTags(ts);
     }
@@ -190,20 +190,20 @@ struct TestDebtags : DebtagsTestEnvironment
 	string p("debtags");
 
     /* Get its tags */
-	std::set<Tag> tags = debtags.getTagsOfItem(p);
+	std::set<std::string> tags = debtags.getTagsOfItem(p);
     assert(!tags.empty());
 
 	// Ensure that it's not tagged with gameplaying
-	Tag t = voc().tagByName("use::gameplaying");
-    assert(! (t <= tags) );
+    std::string t = "use::gameplaying";
+    assert(tags.find(t) == tags.end());
 
 	// Add the gameplaying tag
-	PatchList<string, Tag> change;
-	change.addPatch(Patch<string, Tag>(p, wibble::singleton(t), wibble::Empty<Tag>()));
+	PatchList<string, string> change;
+	change.addPatch(Patch<string, string>(p, wibble::singleton(t), wibble::Empty<string>()));
 	debtags.applyChange(change);
 
 	// See that the patch is non empty
-	PatchList<string, Tag> tmp = debtags.changes();
+	PatchList<string, string> tmp = debtags.changes();
 	assert(tmp.size() > 0);
 	assert_eq(tmp.size(), 1u);
 
@@ -211,8 +211,8 @@ struct TestDebtags : DebtagsTestEnvironment
 	tags = debtags.getTagsOfItem(p);
     assert(!tags.empty());
 
-	t = voc().tagByName("use::gameplaying");
-    assert( t <= tags );
+	t = "use::gameplaying";
+    assert(tags.find(t) != tags.end());
 
 	// Save the patch
 	debtags.savePatch();
@@ -252,18 +252,19 @@ struct TestDebtags : DebtagsTestEnvironment
 	assert_eq(empty.timestamp(), 0);
 	assert(!empty.hasData());
 
-	tagcoll::PatchList<std::string, Tag> patches = empty.changes();
+	tagcoll::PatchList<std::string, std::string> patches = empty.changes();
 	assert(patches.empty());
 
-	set<Tag> res = empty.getTagsOfItem("apt");
-	assert(res.empty());
-	res = empty.getTagsOfItems(wibble::singleton(string("apt")));
+	set<std::string> res = empty.getTagsOfItem("apt");
 	assert(res.empty());
+	// TODO: currently does not compile because of a bug in tagcoll
+	//res = empty.getTagsOfItems(wibble::singleton(string("apt")));
+	//assert(res.empty());
 
 	res = empty.getAllTags();
 	assert(res.empty());
 
-	tagcoll::coll::Simple<string, Tag> coll;
+	tagcoll::coll::Simple<string, std::string> coll;
 	empty.outputSystem(tagcoll::coll::inserter(coll));
 	assert_eq(coll.itemCount(), 0u);
 
diff --git a/ept/debtags/expression.cc b/ept/debtags/expression.cc
deleted file mode 100644
index 4a7967c..0000000
--- a/ept/debtags/expression.cc
+++ /dev/null
@@ -1,51 +0,0 @@
-/** \file
- * Match tag expressions against sets of Debtags Tags
- */
-
-/*
- * Copyright (C) 2003,2004,2005,2006,2007  Enrico Zini <enrico@debian.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- */
-
-#include <ept/debtags/expression.h>
-#include <string>
-
-namespace tagcoll
-{
-
-template<>
-bool Expression::operator()(const std::set<ept::debtags::Tag>& tags) const
-{
-	std::set<std::string> names;
-	for (std::set<ept::debtags::Tag>::const_iterator i = tags.begin();
-			i != tags.end(); ++i)
-		names.insert(i->fullname());
-	return this->m_impl->eval(names);
-}
-
-template<>
-bool Expression::operator()(const std::set<ept::debtags::Facet>& tags) const
-{
-	std::set<std::string> names;
-	for (std::set<ept::debtags::Facet>::const_iterator i = tags.begin();
-			i != tags.end(); ++i)
-		names.insert(i->name());
-	return this->m_impl->eval(names);
-}
-
-};
-
-// vim:set ts=4 sw=4:
diff --git a/ept/debtags/expression.h b/ept/debtags/expression.h
deleted file mode 100644
index 45eb306..0000000
--- a/ept/debtags/expression.h
+++ /dev/null
@@ -1,42 +0,0 @@
-#ifndef EPT_DEBTAGS_EXPRESSION_H
-#define EPT_DEBTAGS_EXPRESSION_H
-
-/** \file
- * Match tag expressions against sets of Debtags Tags
- */
-
-/*
- * Copyright (C) 2003,2004,2005,2006,2007  Enrico Zini <enrico@debian.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- */
-
-#include <ept/debtags/tag.h>
-#include <tagcoll/expression.h>
-#include <set>
-
-namespace tagcoll
-{
-
-template<>
-bool Expression::operator()(const std::set<ept::debtags::Tag>& tags) const;
-
-template<>
-inline bool Expression::operator()(const std::set<ept::debtags::Facet>& tags) const;
-
-};
-
-#endif
-// vim:set ts=4 sw=4:
diff --git a/ept/debtags/expression.test.h b/ept/debtags/expression.test.h
index c96fd44..9f2ea08 100644
--- a/ept/debtags/expression.test.h
+++ b/ept/debtags/expression.test.h
@@ -20,7 +20,7 @@
 
 #include <wibble/test.h>
 #include <ept/debtags/maint/path.h>
-#include <ept/debtags/expression.h>
+#include <tagcoll/expression.h>
 #include <ept/debtags/vocabulary.h>
 
 #include "debtags.test.h"
@@ -34,10 +34,10 @@ struct TestExpression : DebtagsTestEnvironment {
 
         Test _1()
 {
-	set<Tag> test;
-	test.insert(voc.tagByName("use::editing"));
-	test.insert(voc.tagByName("use::viewing"));
-	test.insert(voc.tagByName("works-with::text"));
+	set<std::string> test;
+	test.insert("use::editing");
+	test.insert("use::viewing");
+	test.insert("works-with::text");
 
 	assert_eq(test.size(), 3u);
 
diff --git a/ept/debtags/maint/debtagsindexer.cc b/ept/debtags/maint/debtagsindexer.cc
deleted file mode 100644
index 6c8d6bc..0000000
--- a/ept/debtags/maint/debtagsindexer.cc
+++ /dev/null
@@ -1,265 +0,0 @@
-#include <ept/debtags/maint/debtagsindexer.h>
-#include <ept/debtags/maint/path.h>
-#include <ept/debtags/maint/pkgid.h>
-#include <ept/debtags/maint/serializer.h>
-#include <ept/debtags/vocabulary.h>
-
-#include <tagcoll/coll/intdiskindex.h>
-#include <tagcoll/coll/simple.h>
-#include <tagcoll/TextFormat.h>
-#include <tagcoll/stream/filters.h>
-
-#include <wibble/exception.h>
-
-#include <cstring>
-
-using namespace std;
-
-namespace ept {
-namespace debtags {
-
-/// MMapIndexer that indexes the package names
-struct PkgIdGenerator : public tagcoll::diskindex::MMapIndexer
-{
-	// Sorted set of all available package names
-	std::set<std::string> pkgs;
-
-	int encodedSize() const
-	{
-		int size = pkgs.size() * sizeof(int);
-		for (std::set<std::string>::const_iterator i = pkgs.begin();
-				i != pkgs.end(); ++i)
-			size += i->size() + 1;
-		return tagcoll::diskindex::MMap::align(size);
-	}
-
-	void encode(char* buf) const
-	{
-		int pos = pkgs.size() * sizeof(int);
-		int idx = 0;
-		for (std::set<std::string>::const_iterator i = pkgs.begin();
-				i != pkgs.end(); ++i)
-		{
-			((int*)buf)[idx++] = pos;
-			memcpy(buf + pos, i->c_str(), i->size() + 1);
-			pos += i->size() + 1;
-		}
-	}
-};
-
-
-DebtagsIndexer::DebtagsIndexer(Vocabulary& voc)
-	: voc(voc),
-	  mainSource(Path::debtagsSourceDir()),
-	  userSource(Path::debtagsUserSourceDir())
-{
-	rescan();
-}
-
-void DebtagsIndexer::rescan()
-{
-	ts_main_src = mainSource.timestamp();
-	ts_user_src = userSource.timestamp();
-	ts_main_tag = Path::timestamp(Path::tagdb());
-	ts_main_idx = Path::timestamp(Path::tagdbIndex());
-	ts_user_tag = Path::timestamp(Path::userTagdb());
-	ts_user_idx = Path::timestamp(Path::userTagdbIndex());
-}
-
-bool DebtagsIndexer::needsRebuild() const
-{
-	// If there are no indexes of any kind, then we need rebuilding
-	if (ts_user_tag == 0 && ts_user_idx == 0 && ts_main_tag == 0 && ts_main_idx == 0)
-		return true;
-
-	// If the user index is ok, then we are fine
-	if (ts_user_tag >= sourceTimestamp() && ts_user_idx >= sourceTimestamp())
-		return false;
-
-	// If there are user sources, then we cannot use the system index
-	if (ts_user_src > 0)
-		return true;
-
-	// If there are no user sources, then we can fallback on the system
-	// indexes in case the user indexes are not up to date
-	if (ts_main_tag >= sourceTimestamp() && ts_main_idx >= sourceTimestamp())
-		return false;
-
-	return true;
-}
-
-bool DebtagsIndexer::userIndexIsRedundant() const
-{
-	// If there is no user index, then it is not redundant
-	if (ts_user_tag == 0 && ts_user_idx == 0)
-		return false;
-
-	// If we have user sources, then the user index is never redundant
-	if (ts_user_src > 0)
-		return false;
-
-	// If the system index is not up to date, then the user index is not
-	// redundant
-	if (ts_main_tag < sourceTimestamp() || ts_main_idx < sourceTimestamp())
-		return false;
-
-	return true;
-}
-
-bool DebtagsIndexer::rebuild(const std::string& tagfname, const std::string& idxfname)
-{
-	using namespace tagcoll;
-
-	diskindex::MasterMMapIndexer master(idxfname);
-
-	// Read and merge tag data
-	coll::Simple<string, string> merged;
-	mainSource.readTags(inserter(merged));
-	userSource.readTags(inserter(merged));
-
-	if (merged.empty())
-		//throw wibble::exception::Consistency("Reading debtags sources from " + Path::debtagsSourceDir() + " and " + Path::debtagsUserSourceDir(), "Unable to find any tag data");
-		return false;
-
-	// Create the pkgid index
-	PkgIdGenerator pkgidGen;
-	for (coll::Simple<string, string>::const_iterator i = merged.begin();
-			i != merged.end(); ++i)
-		pkgidGen.pkgs.insert(i->first);
-
-	// Temporary in-memory index to use for converting packages to ints while
-	// creating the debtags index
-	char buf[pkgidGen.encodedSize()];
-	pkgidGen.encode(buf);
-	PkgId pkgid(buf, pkgidGen.encodedSize());
-
-	// Create the Debtags index
-	coll::IntDiskIndexer tagindexer;
-	merged.output(stringToInt(pkgid, voc, inserter(tagindexer)));
-
-	// MMap 0: pkgid
-	master.append(pkgidGen);
-	// MMap 1: pkg->tag
-	master.append(tagindexer.pkgIndexer());
-	// MMap 2: tag->pkg
-	master.append(tagindexer.tagIndexer());
-
-	// Write the tag database in text format
-	std::string tmpdb = tagfname + ".tmp";
-	FILE* out = fopen(tmpdb.c_str(), "wt");
-	if (!out) throw wibble::exception::File(tmpdb, "creating temporary copy of tag index");
-	merged.output(textformat::StdioWriter(out));
-	fclose(out);
-
-	// Perform "atomic" update of the tag database
-	// FIXME: cannot be atomic because race conditions happening between file
-	// renames
-	if (rename(tmpdb.c_str(), tagfname.c_str()) == -1)
-		throw wibble::exception::System("Renaming " + tmpdb + " to " + tagfname);
-
-	master.commit();
-	return true;
-}
-
-bool DebtagsIndexer::rebuildIfNeeded()
-{
-	if (needsRebuild())
-	{
-		// Decide if we rebuild the user index or the system index
-
-		if (ts_user_src == 0 && Path::access(Path::debtagsIndexDir(), W_OK) == 0)
-		{
-			// There are no user sources and we can write to the system index
-			// directory: rebuild the system index
-			if (!rebuild(Path::tagdb(), Path::tagdbIndex()))
-				return false;
-			ts_main_tag = Path::timestamp(Path::tagdb());
-			ts_main_idx = Path::timestamp(Path::tagdbIndex());
-			if (Path::tagdb() == Path::userTagdb())
-				ts_user_tag = ts_main_tag;
-			if (Path::tagdbIndex() == Path::userTagdbIndex())
-				ts_user_idx = ts_main_idx;
-		} else {
-			wibble::sys::fs::mkFilePath(Path::userTagdb());
-			wibble::sys::fs::mkFilePath(Path::userTagdbIndex());
-			if (!rebuild(Path::userTagdb(), Path::userTagdbIndex()))
-				return false;
-			ts_user_tag = Path::timestamp(Path::userTagdb());
-			ts_user_idx = Path::timestamp(Path::userTagdbIndex());
-		}
-		return true;
-	}
-	return false;
-}
-
-bool DebtagsIndexer::deleteRedundantUserIndex()
-{
-	if (userIndexIsRedundant())
-	{
-		// Delete the user indexes if they exist
-		if (Path::tagdb() != Path::userTagdb())
-		{
-			unlink(Path::userTagdb().c_str());
-			ts_user_tag = 0;
-		}
-		if (Path::tagdbIndex() != Path::userTagdbIndex())
-		{
-			unlink(Path::userTagdbIndex().c_str());
-			ts_user_idx = 0;
-		}
-		return true;
-	}
-	return false;
-}
-
-bool DebtagsIndexer::getUpToDateTagdb(std::string& tagfname, std::string& idxfname)
-{
-	// If there are no indexes of any kind, then we have nothing to return
-	if (ts_user_tag == 0 && ts_user_idx == 0 && ts_main_tag == 0 && ts_main_idx == 0)
-		return false;
-
-	// If the user index is up to date, use it
-	if (ts_user_tag >= sourceTimestamp() &&
-		ts_user_idx >= sourceTimestamp())
-	{
-		tagfname = Path::userTagdb();
-		idxfname = Path::userTagdbIndex();
-		return true;
-	}
-
-	// If the user index is not up to date and we have user sources, we cannot
-	// fall back to the system index
-	if (ts_user_src != 0)
-		return false;
-	
-	// Fallback to the system index
-	if (ts_main_tag >= sourceTimestamp() &&
-		ts_main_idx >= sourceTimestamp())
-	{
-		tagfname = Path::tagdb();
-		idxfname = Path::tagdbIndex();
-		return true;
-	}
-	
-	return false;
-}
-
-
-
-bool DebtagsIndexer::obtainWorkingDebtags(Vocabulary& voc, std::string& tagfname, std::string& idxfname)
-{
-	DebtagsIndexer t(voc);
-
-	t.rebuildIfNeeded();
-	t.deleteRedundantUserIndex();
-	return t.getUpToDateTagdb(tagfname, idxfname);
-}
-
-}
-}
-
-#include <ept/debtags/maint/sourcedir.tcc>
-#include <tagcoll/coll/simple.tcc>
-
-// vim:set ts=4 sw=4:
-// -*- C++ -*-
diff --git a/ept/debtags/maint/debtagsindexer.h b/ept/debtags/maint/debtagsindexer.h
deleted file mode 100644
index b702c88..0000000
--- a/ept/debtags/maint/debtagsindexer.h
+++ /dev/null
@@ -1,51 +0,0 @@
-#ifndef EPT_DEBTAGS_DEBTAGSINDEXER_H
-#define EPT_DEBTAGS_DEBTAGSINDEXER_H
-
-#include <ept/debtags/maint/sourcedir.h>
-#include <string>
-
-namespace ept {
-namespace debtags {
-
-class Vocabulary;
-
-struct DebtagsIndexer
-{
-	Vocabulary& voc;
-
-	SourceDir mainSource;
-	SourceDir userSource;
-	time_t ts_main_src;
-	time_t ts_user_src;
-	time_t ts_main_tag;
-	time_t ts_main_idx;
-	time_t ts_user_tag;
-	time_t ts_user_idx;
-
-	time_t sourceTimestamp() const
-	{
-		time_t res = ts_main_src;
-		if (ts_user_src > res) res = ts_user_src;
-		return res;
-	}
-	bool needsRebuild() const;
-	bool rebuild(const std::string& tagfname, const std::string& idxfname);
-	bool rebuildIfNeeded();
-	bool getUpToDateTagdb(std::string& tagfname, std::string& idxfname);
-
-	bool userIndexIsRedundant() const;
-	bool deleteRedundantUserIndex();
-
-	void rescan();
-
-	DebtagsIndexer(Vocabulary& voc);
-
-	static bool obtainWorkingDebtags(Vocabulary& voc, std::string& tagfname, std::string& idxfname);
-};
-
-
-}
-}
-
-// vim:set ts=4 sw=4:
-#endif
diff --git a/ept/debtags/maint/pkgid.cc b/ept/debtags/maint/pkgid.cc
deleted file mode 100644
index c78d7c1..0000000
--- a/ept/debtags/maint/pkgid.cc
+++ /dev/null
@@ -1,66 +0,0 @@
-// -*- mode: c++; tab-width: 4; indent-tabs-mode: t -*-
-
-/** @file
- * @author Enrico Zini <enrico@enricozini.org>
- * Quick map from package IDs to package names
- */
-
-/*
- * Copyright (C) 2003-2007  Enrico Zini <enrico@debian.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- */
-
-#include <ept/debtags/maint/pkgid.h>
-#include <ept/debtags/maint/path.h>
-
-namespace ept {
-namespace debtags {
-
-PkgId::PkgId() {}
-
-PkgId::PkgId(const char* buf, int size)
-	: MMap(buf, size) {}
-
-PkgId::PkgId(const tagcoll::diskindex::MasterMMap& master, size_t idx)
-	: MMap(master, idx) {}
-
-int PkgId::byName(const std::string& name) const
-{
-	// Binary search the index to find the package ID
-	int begin, end;
-
-	/* Binary search */
-	begin = -1, end = size();
-	while (end - begin > 1)
-	{
-		int cur = (end + begin) / 2;
-		if (byID(cur) > name)
-			end = cur;
-		else
-			begin = cur;
-	}
-
-	if (begin == -1 || byID(begin) != name)
-		//throw NotFoundException(string("looking for the ID of string ") + str);
-		return -1;
-	else
-		return begin;
-}
-
-}
-}
-
-// vim:set ts=4 sw=4:
diff --git a/ept/debtags/maint/pkgid.h b/ept/debtags/maint/pkgid.h
deleted file mode 100644
index e193f8c..0000000
--- a/ept/debtags/maint/pkgid.h
+++ /dev/null
@@ -1,91 +0,0 @@
-// -*- mode: c++; tab-width: 4; indent-tabs-mode: t -*-
-#ifndef EPT_DEBTAGS_PKGID_H
-#define EPT_DEBTAGS_PKGID_H
-
-/** @file
- * @author Enrico Zini <enrico@enricozini.org>
- * Quick map from package IDs to package names
- */
-
-/*
- * Copyright (C) 2003-2007  Enrico Zini <enrico@debian.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- */
-
-#include <tagcoll/diskindex/mmap.h>
-#include <string>
-
-namespace ept {
-namespace debtags {
-
-/**
- * Maps Packages to IDs and vice-versa.
- *
- * This is used in building the Debtags fast index, which works representing
- * tags and packages as int IDs
- */
-class PkgId : public tagcoll::diskindex::MMap
-{
-	tagcoll::diskindex::MasterMMap mastermmap;
-	time_t m_timestamp;
-
-public:
-	PkgId();
-	PkgId(const tagcoll::diskindex::MasterMMap& master, size_t idx);
-	PkgId(const char* buf, int size);
-
-	/// Get the timestamp of when the index was last updated
-	time_t timestamp() const { return m_timestamp; }
-
-	/// Get the number of packages in the index
-	size_t size() const { return m_buf ? *(int*)m_buf / sizeof(int) : 0; }
-
-	/**
-	 * Get the ID of a package given its name.
-	 *
-	 * If not found, returns -1.
-	 */
-	int byName(const std::string& name) const;
-
-	/**
-	 * Get a package name given its ID.
-	 *
-	 * If not found, returns the empty string.
-	 */
-	std::string byID(int id) const
-	{
-		if (id >= 0 || static_cast<unsigned>(id) < size())
-			return std::string(m_buf + ((int*)m_buf)[id]);
-		return std::string();
-	}
-
-	/// Get the number of packages in the index
-	int size(int id) const
-	{
-		if (id < 0 || (unsigned)id >= size())
-			return 0;
-		if ((unsigned)id == size() - 1)
-			return m_size - ((int*)m_buf)[id] - 1;
-		else
-			return ((int*)m_buf)[id + 1] - ((int*)m_buf)[id] - 1;
-	}
-};
-
-}
-}
-
-// vim:set ts=4 sw=4:
-#endif
diff --git a/ept/debtags/maint/pkgid.test.h b/ept/debtags/maint/pkgid.test.h
deleted file mode 100644
index d49b72c..0000000
--- a/ept/debtags/maint/pkgid.test.h
+++ /dev/null
@@ -1,75 +0,0 @@
-// -*- mode: c++; tab-width: 4; indent-tabs-mode: t -*-
-/*
- * id->package mapping
- *
- * Copyright (C) 2006  Enrico Zini <enrico@debian.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- */
-
-#include <ept/debtags/maint/pkgid.h>
-#include <ept/debtags/maint/path.h>
-#include <ept/debtags/debtags.h>
-#include <set>
-
-#include <ept/test.h>
-
-using namespace std;
-using namespace ept;
-using namespace ept::debtags;
-
-struct TestPkgid : DebtagsTestEnvironment
-{
-	Debtags debtags;
-	PkgId& pkgid;
-
-	TestPkgid()
-		: pkgid(debtags.pkgid())
-	{
-	}
-
-// Check that we can go from name to ID and back
-	Test _1()
-{
-	//int x = 0;
-	for (Debtags::const_iterator i = debtags.begin();
-			i != debtags.end(); ++i)
-	{
-		int id = pkgid.byName(i->first);
-		std::string pkg = pkgid.byID(id);
-		assert(i->first == pkg);
-
-		/* std::cerr << x << ": " << i->id() << ": "
-				  << i->name() << ", " << pkgidx().name( i->id() ) <<
-				  std::endl; */
-		//++ x;
-	}
-}
-
-// Check that IDs are distinct
-	Test _2()
-{
-	using namespace std;
-
-	size_t count = 0;
-	set<int> ids;
-	for (Debtags::const_iterator i = debtags.begin(); i != debtags.end(); ++i, ++count)
-		ids.insert(pkgid.byName(i->first));
-	assert_eq(ids.size(), count);
-}
-
-};
-
-// vim:set ts=4 sw=4:
diff --git a/ept/debtags/maint/serializer.h b/ept/debtags/maint/serializer.h
deleted file mode 100644
index 57c4c81..0000000
--- a/ept/debtags/maint/serializer.h
+++ /dev/null
@@ -1,949 +0,0 @@
-// -*- mode: c++; tab-width: 4; indent-tabs-mode: t -*-
-/**
- * @file cache/component/debtags/serializer.h
- * @author Enrico Zini (enrico) <enrico@enricozini.org>
- */
-
-#ifndef EPT_DEBTAGS_SERIALIZER_H
-#define EPT_DEBTAGS_SERIALIZER_H
-
-#include <ept/debtags/vocabulary.h>
-#include <ept/debtags/maint/pkgid.h>
-#include <tagcoll/patch.h>
-#include <wibble/mixin.h>
-#include <string>
-
-namespace ept {
-namespace debtags {
-
-template<typename OUT>
-class IntToPkg : public wibble::mixin::OutputIterator< IntToPkg<OUT> >
-{
-	PkgId& pkgid;
-	Vocabulary& voc;
-	OUT out;
-
-public:
-	IntToPkg(PkgId& pkgid, Vocabulary& voc, const OUT& out)
-		: pkgid(pkgid), voc(voc), out(out) {}
-
-	template<typename ITEMS, typename TAGS>
-	IntToPkg<OUT>& operator=(const std::pair<ITEMS, TAGS>& data)
-	{
-		std::set<std::string> ritems;
-		std::set<Tag> rtags;
-
-		for (typename ITEMS::const_iterator i = data.first.begin();
-				i != data.first.end(); ++i)
-		{
-			std::string pkg = pkgid.byID(*i);
-			if (!pkg.empty())
-				ritems.insert(pkg);
-		}
-
-		for (typename TAGS::const_iterator i = data.second.begin();
-				i != data.second.end(); ++i)
-		{
-			Tag t = voc.tagByID(*i);
-			if (t.valid())
-				rtags.insert(t);
-		}
-
-		if (!ritems.empty() && !rtags.empty())
-		{
-			*out = make_pair(ritems, rtags);
-			++out;
-		}
-		return *this;
-	}
-};
-
-template<typename OUT>
-IntToPkg<OUT> intToPkg(PkgId& pkgid, Vocabulary& voc, const OUT& out)
-{
-	return IntToPkg<OUT>(pkgid, voc, out);
-}
-
-template<typename OUT>
-class StringToInt : public wibble::mixin::OutputIterator< StringToInt<OUT> >
-{
-	PkgId& pkgid;
-	Vocabulary& voc;
-	OUT out;
-
-public:
-	StringToInt(PkgId& pkgid, Vocabulary& voc, const OUT& out)
-		: pkgid(pkgid), voc(voc), out(out) {}
-
-	template<typename ITEMS, typename TAGS>
-	StringToInt<OUT>& operator=(const std::pair<ITEMS, TAGS>& data)
-	{
-		std::set<int> ritems;
-		std::set<int> rtags;
-
-		for (typename ITEMS::const_iterator i = data.first.begin();
-				i != data.first.end(); ++i)
-		{
-			int id = pkgid.byName(*i);
-			if (id != -1)
-				ritems.insert(id);
-		}
-
-		for (typename TAGS::const_iterator i = data.second.begin();
-				i != data.second.end(); ++i)
-		{
-			Tag t = voc.tagByName(*i);
-			if (t.valid())
-				rtags.insert(t.id());
-		}
-
-		if (!ritems.empty() && !rtags.empty())
-		{
-			*out = make_pair(ritems, rtags);
-			++out;
-		}
-		return *this;
-	}
-
-};
-
-template<typename OUT>
-StringToInt<OUT> stringToInt(PkgId& pkgid, Vocabulary& voc, const OUT& out)
-{
-	return StringToInt<OUT>(pkgid, voc, out);
-}
-
-template<typename OUT>
-class StringToPkg : public wibble::mixin::OutputIterator< StringToPkg<OUT> >
-{
-	PkgId& pkgid;
-	Vocabulary& voc;
-	OUT out;
-
-public:
-	StringToPkg(PkgId& pkgid, Vocabulary& voc, const OUT& out)
-		: pkgid(pkgid), voc(voc), out(out) {}
-
-	template<typename ITEMS, typename TAGS>
-	StringToPkg<OUT>& operator=(const std::pair<ITEMS, TAGS>& data)
-	{
-		std::set<std::string> ritems;
-		std::set<Tag> rtags;
-
-		for (typename ITEMS::const_iterator i = data.first.begin();
-				i != data.first.end(); ++i)
-		{
-			// Ensure that the package exists in the pkgid database
-			if (pkgid.byName(*i) == -1)
-				continue;
-			ritems.insert(*i);
-		}
-
-		for (typename TAGS::const_iterator i = data.second.begin();
-				i != data.second.end(); ++i)
-		{
-			Tag t = voc.tagByName(*i);
-			if (t.valid())
-				rtags.insert(t);
-		}
-
-		if (!ritems.empty() && !rtags.empty())
-		{
-			*out = make_pair(ritems, rtags);
-			++out;
-		}
-		return *this;
-	}
-
-};
-
-template<typename OUT>
-StringToPkg<OUT> stringToPkg(PkgId& pkgid, Vocabulary& voc, const OUT& out)
-{
-	return StringToPkg<OUT>(pkgid, voc, out);
-}
-
-template<typename OUT>
-class PkgToString : public wibble::mixin::OutputIterator< PkgToString<OUT> >
-{
-	OUT out;
-public:
-	PkgToString(const OUT& out) : out(out) {}
-
-	template<typename ITEMS, typename TAGS>
-	PkgToString<OUT>& operator=(const std::pair<ITEMS, TAGS>& data)
-	{
-		std::set<std::string> stags;
-		for (typename TAGS::const_iterator i = data.second.begin();
-				i != data.second.end(); ++i)
-			if (i->valid())
-				stags.insert(i->fullname());
-		*out = make_pair(data.first, stags);
-		++out;
-		return *this;
-	}
-};
-
-template<typename OUT>
-PkgToString<OUT> pkgToString(const OUT& out)
-{
-	return PkgToString<OUT>(out);
-}
-
-template<typename OUT>
-class PatchStringToInt : public wibble::mixin::OutputIterator< PatchStringToInt<OUT> >
-{
-	PkgId& pkgid;
-	Vocabulary& voc;
-	OUT out;
-
-public:
-	PatchStringToInt(PkgId& pkgid, Vocabulary& voc, const OUT& out)
-		: pkgid(pkgid), voc(voc), out(out) {}
-
-	PatchStringToInt<OUT>& operator=(const tagcoll::Patch<std::string, std::string>& patch)
-	{
-		int id = pkgid.byName(patch.item);
-		if (id == -1)
-			return *this;
-
-		tagcoll::Patch<int, int> res(id);
-		for (std::set<std::string>::const_iterator i = patch.added.begin();
-				i != patch.added.end(); ++i)
-		{
-			Tag tag = voc.tagByName(*i);
-			if (tag.valid())
-				res.add(tag.id());
-		}
-		for (std::set<std::string>::const_iterator i = patch.removed.begin();
-				i != patch.removed.end(); ++i)
-		{
-			Tag tag = voc.tagByName(*i);
-			if (tag.valid())
-				res.remove(tag.id());
-		}
-		*out = res;
-		++out;
-		return *this;
-	}
-};
-
-template<typename OUT>
-PatchStringToInt<OUT> patchStringToInt(PkgId& pkgid, Vocabulary& voc, const OUT& out)
-{
-	return PatchStringToInt<OUT>(pkgid, voc, out);
-}
-
-template<typename OUT>
-class PatchIntToString : public wibble::mixin::OutputIterator< PatchIntToString<OUT> >
-{
-	PkgId& pkgid;
-	Vocabulary& voc;
-	OUT out;
-
-public:
-	PatchIntToString(PkgId& pkgid, Vocabulary& voc, const OUT& out)
-		: pkgid(pkgid), voc(voc), out(out) {}
-
-	PatchIntToString<OUT>& operator=(const tagcoll::Patch<int, int>& patch)
-	{
-		std::string name = pkgid.byID(patch.item);
-		if (name.empty())
-			return *this;
-
-		tagcoll::Patch<std::string, std::string> res(name);
-		for (std::set<int>::const_iterator i = patch.added.begin();
-				i != patch.added.end(); ++i)
-		{
-			Tag tag = voc.tagByID(*i);
-			if (tag.valid())
-				res.add(tag.fullname());
-		}
-		for (std::set<int>::const_iterator i = patch.removed.begin();
-				i != patch.removed.end(); ++i)
-		{
-			Tag tag = voc.tagByID(*i);
-			if (tag.valid())
-				res.remove(tag.fullname());
-		}
-		*out = res;
-		++out;
-		return *this;
-	}
-};
-
-template<typename OUT>
-PatchIntToString<OUT> patchIntToString(PkgId& pkgid, Vocabulary& voc, const OUT& out)
-{
-	return PatchIntToString<OUT>(pkgid, voc, out);
-}
-
-#if 0
-	GOOD STUFF
-
-template<typename OUT>
-class ToInt : public wibble::mixin::OutputIterator< ToInt<OUT> >
-{
-	OUT out;
-public:
-	ToInt(const OUT& out) : out(out) {}
-
-	template<typename ITEMS, typename TAGS>
-	ToInt<OUT>& operator=(const std::pair<ITEMS, TAGS>& data)
-	{
-		std::set<int> iitems;
-		std::set<int> itags;
-		for (typename ITEMS::const_iterator i = data.first.begin();
-				i != data.first.end(); ++i)
-			if (i->valid())
-				iitems.insert(i->ondiskId());
-		for (typename TAGS::const_iterator i = data.second.begin();
-				i != data.second.end(); ++i)
-			if (i->valid())
-				itags.insert(i->id());
-		*out = make_pair(iitems, itags);
-		++out;
-		return *this;
-	}
-};
-
-template<typename OUT>
-ToInt<OUT> toInt(const OUT& out)
-{
-	return ToInt<OUT>(out);
-}
-
-template<typename ITEMCONV, typename TAGCONV, typename OUT>
-class Converter : public wibble::mixin::OutputIterator< Converter<ITEMCONV, TAGCONV, OUT> >
-{
-	ITEMCONV itemconv;
-	TAGCONV tagconv;
-	OUT out;
-
-public:
-	Converter(const ITEMCONV& itemconv, const TAGCONV& tagconv, const OUT& out)
-		: itemconv(itemconv), tagconv(tagconv), out(out) {}
-
-	template<typename ITEMS, typename TAGS>
-	Converter<ITEMCONV, TAGCONV, OUT>& operator=(const std::pair<ITEMS, TAGS>& data)
-	{
-		*out = make_pair(itemconv(data.first), tagconv(data.second));
-		++out;
-		return *this;
-	}
-};
-
-template<typename ITEMCONV, typename TAGCONV, typename OUT>
-Converter<ITEMCONV, TAGCONV, OUT> converter(const ITEMCONV& itemconv, const TAGCONV& tagconv, const OUT& out)
-{
-	return Converter<ITEMCONV, TAGCONV, OUT>(itemconv, tagconv, out);
-}
-
-
-template<typename OUT>
-class PatchToString : public wibble::mixin::OutputIterator< PatchToString<OUT> >
-{
-	OUT out;
-
-public:
-	PatchToString(const OUT& out) : out(out) {}
-
-	template<typename PKG, typename TAG>
-	PatchToString<OUT>& operator=(const tagcoll::Patch<PKG, TAG>& patch)
-	{
-		if (!patch.item.valid())
-			return *this;
-
-		tagcoll::Patch<std::string, std::string> res(patch.item.name());
-		for (typename std::set<TAG>::const_iterator i = patch.added.begin();
-				i != patch.added.end(); ++i)
-			if (i->valid())
-				res.add(i->fullname());
-		for (typename std::set<TAG>::const_iterator i = patch.removed.begin();
-				i != patch.removed.end(); ++i)
-			if (i->valid())
-				res.remove(i->fullname());
-		*out = res;
-		++out;
-		return *this;
-	}
-};
-
-template<typename OUT>
-PatchToString<OUT> patchToString(const OUT& out)
-{
-	return PatchToString<OUT>(out);
-}
-
-#endif
-
-}
-}
-
-#if 0
-
-namespace tagcoll {
-namespace coll {
-
-template<>
-struct coll_traits< ept::cache::debtags::DebtagsIndex >
-{
-	typedef ept::cache::Package<> item_type;
-	typedef ept::cache::debtags::Tag tag_type;
-	typedef std::set< ept::cache::Package<> > itemset_type;
-	typedef std::set<ept::cache::debtags::Tag> tagset_type;
-};
-
-}
-}
-
-namespace ept {
-namespace cache {
-namespace debtags {
-
-#if 0
-/**
- * Convert Facets to ints
- */
-class FacetIntConverter : public Implementation<FacetIntConverter>,
-	public Tagcoll::Converter<aptFront::cache::entity::Facet, int>,
-	public Tagcoll::Converter<int, aptFront::cache::entity::Facet>
-{
-	typedef aptFront::cache::entity::Facet Facet;
-	typedef Tagcoll::OpSet<aptFront::cache::entity::Facet> FacetSet;
-	typedef Tagcoll::OpSet<int> IntSet;
-public:
-	virtual int operator()(const aptFront::cache::entity::Facet& item) const;
-	virtual aptFront::cache::entity::Facet operator()(const int& item) const;
-
-	virtual IntSet operator()(const FacetSet& item) const
-		{ return Tagcoll::Converter<Facet, int>::operator()(item); }
-	virtual FacetSet operator()(const IntSet& item) const
-		{ return Tagcoll::Converter<int, Facet>::operator()(item); }
-
-	static std::string componentName();
-};
-
-/**
- * Convert Facets to strings
- */
-class FacetStringConverter : public Implementation<FacetStringConverter>,
-	public Tagcoll::Converter<aptFront::cache::entity::Facet, std::string>,
-	public Tagcoll::Converter<std::string, aptFront::cache::entity::Facet>
-{
-	typedef aptFront::cache::entity::Facet Facet;
-	typedef Tagcoll::OpSet<aptFront::cache::entity::Facet> FacetSet;
-	typedef Tagcoll::OpSet<std::string> StringSet;
-public:
-	virtual std::string operator()(const aptFront::cache::entity::Facet& item) const;
-	virtual aptFront::cache::entity::Facet operator()(const std::string& item) const;
-
-	virtual StringSet operator()(const FacetSet& item) const
-		{ return Tagcoll::Converter<Facet, std::string>::operator()(item); }
-	virtual FacetSet operator()(const StringSet& item) const
-		{ return Tagcoll::Converter<std::string, Facet>::operator()(item); }
-
-	static std::string componentName();
-};
-
-/**
- * Convert Vocabulary to ints
- */
-class TagIntConverter : public Implementation<TagIntConverter>,
-	public Tagcoll::Converter<aptFront::cache::entity::Tag, int>,
-	public Tagcoll::Converter<int, aptFront::cache::entity::Tag>
-{
-	typedef aptFront::cache::entity::Tag Tag;
-	typedef Tagcoll::OpSet<aptFront::cache::entity::Tag> TagSet;
-	typedef Tagcoll::OpSet<int> IntSet;
-public:
-	virtual int operator()(const aptFront::cache::entity::Tag& item) const;
-	virtual aptFront::cache::entity::Tag operator()(const int& item) const;
-
-	virtual IntSet operator()(const TagSet& item) const
-		{ return Tagcoll::Converter<Tag, int>::operator()(item); }
-	virtual TagSet operator()(const IntSet& item) const
-		{ return Tagcoll::Converter<int, Tag>::operator()(item); }
-
-	static std::string componentName();
-};
-
-/**
- * Convert Vocabulary to strings
- */
-class TagStringConverter : public Implementation<TagStringConverter>,
-	public Tagcoll::Converter<aptFront::cache::entity::Tag, std::string>,
-	public Tagcoll::Converter<std::string, aptFront::cache::entity::Tag>
-{
-	typedef aptFront::cache::entity::Tag Tag;
-	typedef Tagcoll::OpSet<aptFront::cache::entity::Tag> TagSet;
-	typedef Tagcoll::OpSet<std::string> StringSet;
-public:
-	virtual std::string operator()(const Tag& item) const;
-	virtual Tag operator()(const std::string& item) const;
-
-	virtual StringSet operator()(const TagSet& item) const
-		{ return Tagcoll::Converter<Tag, std::string>::operator()(item); }
-	virtual TagSet operator()(const StringSet& item) const
-		{ return Tagcoll::Converter<std::string, Tag>::operator()(item); }
-
-	TagSet parseTagList(const std::string& str) const;
-
-	static std::string componentName();
-};
-
-/**
- * Convert Aggregator to ints
- */
-class PackageIntConverter : public Implementation<PackageIntConverter>,
-	public Tagcoll::Converter<aptFront::cache::entity::Package, int>,
-	public Tagcoll::Converter<int, aptFront::cache::entity::Package>
-{
-	typedef aptFront::cache::entity::Package Package;
-	typedef Tagcoll::OpSet<aptFront::cache::entity::Package> PackageSet;
-	typedef Tagcoll::OpSet<int> IntSet;
-public:
-	virtual int operator()(const Package& item) const;
-	virtual Package operator()(const int& item) const;
-
-	virtual IntSet operator()(const PackageSet& item) const
-		{ return Tagcoll::Converter<Package, int>::operator()(item); }
-	virtual PackageSet operator()(const IntSet& item) const
-		{ return Tagcoll::Converter<int, Package>::operator()(item); }
-
-	static std::string componentName();
-};
-
-/**
- * Convert Aggregator to strings
- */
-class PackageStringConverter : public Implementation<PackageStringConverter>,
-	public Tagcoll::Converter<aptFront::cache::entity::Package, std::string>,
-	public Tagcoll::Converter<std::string, aptFront::cache::entity::Package>
-{
-	typedef aptFront::cache::entity::Package Package;
-	typedef Tagcoll::OpSet<aptFront::cache::entity::Package> PackageSet;
-	typedef Tagcoll::OpSet<std::string> StringSet;
-public:
-	virtual std::string operator()(const Package& item) const;
-	virtual Package operator()(const std::string& item) const;
-
-	virtual StringSet operator()(const PackageSet& item) const
-		{ return Tagcoll::Converter<Package, std::string>::operator()(item); }
-	virtual PackageSet operator()(const StringSet& item) const
-		{ return Tagcoll::Converter<std::string, Package>::operator()(item); }
-
-	static std::string componentName();
-};
-
-#endif
-
-}
-}
-}
-
-#endif
-
-#endif
-// -*- mode: c++; tab-width: 4; indent-tabs-mode: t -*-
-
-#if 0
-/**
- * @file cache/debtags/serializer.h
- * @author Enrico Zini (enrico) <enrico@enricozini.org>
- */
-
-#ifndef EPT_CACHE_DEBTAGS_SERIALIZER_TCC
-#define EPT_CACHE_DEBTAGS_SERIALIZER_TCC
-
-#include <ept/cache/debtags/serializer.h>
-#if 0
-#include <ept/cache/debtags/pkgidx.h>
-#include <ept/cache/debtags/vocabulary.h>
-#include <ept/cache/package.h>
-//#include <ept/cache/cache.h>
-#endif
-
-namespace ept {
-namespace t {
-namespace cache {
-namespace debtags {
-
-
-
-#if 0
-string FacetIntConverter::componentName() { return "FacetIntConverter"; }
-
-int FacetIntConverter::operator()(const aptFront::cache::entity::Facet& item) const
-{
-	if (!item.valid()) return -1;
-	return item.id();
-}
-aptFront::cache::entity::Facet FacetIntConverter::operator()(const int& item) const
-{
-	return cache().tags().facetByID(item);
-}
-
-string FacetStringConverter::componentName() { return "FacetStringConverter"; }
-
-std::string FacetStringConverter::operator()(const aptFront::cache::entity::Facet& item) const
-{
-	if (!item.valid()) return string();
-	return item.name();
-}
-aptFront::cache::entity::Facet FacetStringConverter::operator()(const std::string& item) const
-{
-	return cache().tags().facetByName(item);
-}
-
-string TagIntConverter::componentName() { return "TagIntConverter"; }
-
-int TagIntConverter::operator()(const aptFront::cache::entity::Tag& item) const
-{
-	if (!item.valid()) return -1;
-	return item.id();
-}
-aptFront::cache::entity::Tag TagIntConverter::operator()(const int& item) const
-{
-	return cache().tags().tagByID(item);
-}
-
-string TagStringConverter::componentName() { return "TagStringConverter"; }
-
-std::string TagStringConverter::operator()(const aptFront::cache::entity::Tag& item) const
-{
-	if (!item.valid()) return string();
-	return item.fullname();
-}
-aptFront::cache::entity::Tag TagStringConverter::operator()(const std::string& item) const
-{
-	return cache().tags().tagByName(item);
-}
-
-Tagcoll::OpSet<entity::Tag> TagStringConverter::parseTagList(const std::string& str) const
-{
-	if (str.empty())
-		return Tagcoll::OpSet<entity::Tag>();
-
-	size_t i = str.find(", ");
-	if (i == string::npos)
-	{
-		// Check if we need curly brace expansion
-		if (str[str.size() - 1] == '}')
-		{
-			using namespace std;
-			Tagcoll::OpSet<entity::Tag> res;
-			size_t begin = str.find('{');
-			if (begin == string::npos)
-				return res;
-			string prefix(str, 0, begin);
-			++begin;
-			size_t end;
-			while ((end = str.find(',', begin)) != string::npos)
-			{
-				res += (*this)(prefix + str.substr(begin, end-begin));
-				begin = end + 1;
-			}
-			res += (*this)(prefix + str.substr(begin, str.size() - 1 - begin));
-			return res;
-		} else {
-			entity::Tag t = (*this)(str);
-			if (t.valid())
-				return Tagcoll::OpSet<entity::Tag>() + t;
-			else
-				return Tagcoll::OpSet<entity::Tag>();
-		}
-	} else {
-		return parseTagList(string(str, 0, i)) + parseTagList(string(str, i+2));
-	}
-}
-
-string PackageIntConverter::componentName() { return "PackageIntConverter"; }
-
-int PackageIntConverter::operator()(const aptFront::cache::entity::Package& item) const
-{
-	if (!item.valid()) return -1;
-	return item.id();
-}
-aptFront::cache::entity::Package PackageIntConverter::operator()(const int& item) const
-{
-	PkgIdx& p = cache().pkgidx();
-	return cache().packages().packageByName(string(p.name(item), p.size(item)));
-}
-
-string PackageStringConverter::componentName() { return "PackageStringConverter"; }
-
-std::string PackageStringConverter::operator()(const aptFront::cache::entity::Package& item) const
-{
-	if (!item.valid()) return string();
-	return item.name();
-}
-aptFront::cache::entity::Package PackageStringConverter::operator()(const std::string& item) const
-{
-	return cache().packages().packageByName(item);
-}
-#endif
-
-}
-}
-
-#endif
-
-#if 0
-#ifdef COMPILE_TESTSUITE
-//#include <apt-front/cache/component/debtags/update.h>
-#include <iostream>
-#include "test-utils.h"
-
-namespace tut {
-using namespace aptFront::cache;
-using namespace component;
-using namespace debtags;
-using namespace std;
-
-struct cache_component_debtags_serializer_shar {
-    cache_component_debtags_serializer_shar () {
-        aptInit ();
-        ok = true;
-        debtags::fetchNewData();
-        c.open( Cache::OpenDefault |
-                Cache::OpenReadOnly | Cache::OpenDebtags );
-    }
-    void check() {
-        if (ok) return;
-        ok = true;
-        throw warning( "debtags init failed, cancelling" );
-    }
-    ~cache_component_debtags_serializer_shar() {
-        check();
-    }
-    Cache c;
-    bool ok;
-};
-
-TESTGRP( cache_component_debtags_serializer );
-
-using namespace Tagcoll;
-
-template<> template<>
-void to::test<1> ()
-{
-    check();
-
-	PackageStringConverter& psc = c.packagestringconverter();
-
-	ensure(psc("Slartibartsfart") == entity::Package());
-
-    /* Get the 'debtags' package */
-    entity::Package p = c.packages().packageByName( "debtags" );
-    ensure(p.valid());
-
-	/* Get the 'debtags' package using the serializer */
-	entity::Package p1 = psc("debtags");
-	ensure(p1.valid());
-
-	/* They must be the same */
-	ensure(p == p1);
-
-	ensure_equals(psc(p), "debtags");
-	ensure_equals(psc(p1), "debtags");
-	ensure_equals(psc(p), psc(p1));
-
-	/* If there is an invalid package to serialize, it should be discarded */
-	{
-		Tagcoll::OpSet<entity::Package> pkgs;
-		pkgs += c.packages().packageByName( "debtags" );
-		pkgs += c.packages().packageByName( "tagcoll" );
-		pkgs += entity::Package();
-
-		ensure_equals (pkgs.size(), 3u);
-		ensure_equals (psc(pkgs).size(), 2u);
-		ensure (psc(pkgs).contains("debtags"));
-		ensure (psc(pkgs).contains("tagcoll"));
-	}
-
-	/* If there is an invalid package to serialize, it should be discarded */
-	{
-		Tagcoll::OpSet<std::string> pkgs;
-		pkgs += "debtags";
-		pkgs += "tagcoll";
-		pkgs += "Slartibartsfart";
-
-		ensure_equals (pkgs.size(), 3u);
-		ensure_equals (psc(pkgs).size(), 2u);
-		ensure (psc(pkgs).contains(psc("debtags")));
-		ensure (psc(pkgs).contains(psc("tagcoll")));
-		ensure (!psc(pkgs).contains(entity::Package()));
-	}
-}
-
-ostream& operator<<(ostream& out, const entity::Package& pkg)
-{
-	if (pkg.valid())
-		return out << pkg.name();
-	else
-		return out << "(invalid package)";
-}
-
-// Check that package conversions work two-way
-template<> template<>
-void to::test<2> ()
-{
-	PackageStringConverter& psc = c.packagestringconverter();
-	for (component::Aggregator::iterator i = c.packages().packagesBegin();
-			i != c.packages().packagesEnd(); ++i)
-	{
-		try {
-			ensure_equals(*i, psc(psc(*i)));
-		} catch (...) {
-			cerr << "Note: exception thrown during processing[string] of package " << i->name(string("(invalid package)")) << endl;
-			throw;
-		}
-	}
-
-	PackageIntConverter& pic = c.packageintconverter();
-	for (component::Aggregator::iterator i = c.packages().packagesBegin();
-			i != c.packages().packagesEnd(); ++i)
-	{
-		try {
-			ensure_equals(*i, pic(pic(*i)));
-		} catch (...) {
-			cerr << "Note: exception thrown during processing[int] of package " << i->name(string("(invalid package)")) << endl;
-			throw;
-		}
-	}
-}
-
-// Check that facet conversions work two-way
-template<> template<>
-void to::test<3> ()
-{
-	typedef Tagcoll::OpSet<entity::Facet> FacetSet;
-
-	FacetStringConverter& fsc = c.facetstringconverter();
-	FacetSet allFacets(c.tags().facets());
-	for (FacetSet::const_iterator i = allFacets.begin(); i != allFacets.end(); i++)
-	{
-		try {
-			ensure_equals(*i, fsc(fsc(*i)));
-		} catch (...) {
-			cerr << "Note: exception thrown during processing[string] of facet " << i->name() << endl;
-			throw;
-		}
-	}
-
-	FacetIntConverter& fic = c.facetintconverter();
-	for (FacetSet::const_iterator i = allFacets.begin(); i != allFacets.end(); i++)
-	{
-		try {
-			ensure_equals(*i, fic(fic(*i)));
-		} catch (...) {
-			cerr << "Note: exception thrown during processing[int] of facet " << i->name() << endl;
-			throw;
-		}
-	}
-}
-
-// Check that tag conversions work two-way
-template<> template<>
-void to::test<4> ()
-{
-	typedef Tagcoll::OpSet<entity::Tag> TagSet;
-
-	TagStringConverter& tsc = c.tagstringconverter();
-	TagSet allTags(c.tags().tags());
-	for (TagSet::const_iterator i = allTags.begin(); i != allTags.end(); i++)
-	{
-		try {
-			ensure_equals(*i, tsc(tsc(*i)));
-		} catch (...) {
-			cerr << "Note: exception thrown during processing[string] of tag " << i->fullname() << endl;
-			throw;
-		}
-	}
-
-	TagIntConverter& tic = c.tagintconverter();
-	for (TagSet::const_iterator i = allTags.begin(); i != allTags.end(); i++)
-	{
-		try {
-			ensure_equals(*i, tic(tic(*i)));
-		} catch (...) {
-			cerr << "Note: exception thrown during processing[int] of tag " << i->fullname() << endl;
-			throw;
-		}
-	}
-}
-
-// Check TagStringConverter::parseTagList
-template<> template<>
-void to::test<5> ()
-{
-	TagStringConverter& tsc = c.tagstringconverter();
-	OpSet<entity::Tag> ts;
-
-	// First ensure that we're using existing tags as samples
-	ensure(tsc("accessibility::TODO") != entity::Tag());
-	ensure(tsc("role::sw:devel-lib") != entity::Tag());
-	ensure(tsc("x11::xserver") != entity::Tag());
-	ensure(tsc("antani") == entity::Tag());
-	ensure(tsc("blinda") == entity::Tag());
-	ensure(tsc("supercazzola") == entity::Tag());
-
-	ts = tsc.parseTagList("role::sw:devel-lib");
-	ensure_equals(ts.size(), 1u);
-	ensure(ts.contains(tsc("role::sw:devel-lib")));
-
-	ts = tsc.parseTagList("accessibility::TODO, x11::xserver, role::sw:devel-lib");
-	ensure_equals(ts.size(), 3u);
-	ensure(ts.contains(tsc("accessibility::TODO")));
-	ensure(ts.contains(tsc("role::sw:devel-lib")));
-	ensure(ts.contains(tsc("x11::xserver")));
-
-	ts = tsc.parseTagList("antani");
-	ensure_equals(ts.size(), 0u);
-
-	ts = tsc.parseTagList("antani, blinda, supercazzola");
-	ensure_equals(ts.size(), 0u);
-
-	ts = tsc.parseTagList("antani, x11::xserver, blinda");
-	ensure_equals(ts.size(), 1u);
-	ensure(ts.contains(tsc("x11::xserver")));
-}
-
-// Check TagStringConverter::parseTagList's handling of curly brace expansion
-template<> template<>
-void to::test<6> ()
-{
-	TagStringConverter& tsc = c.tagstringconverter();
-	OpSet<entity::Tag> ts;
-
-	// First ensure that we're using existing tags as samples
-	ensure(tsc("role::TODO") != entity::Tag());
-	ensure(tsc("role::sw:server") != entity::Tag());
-	ensure(tsc("role::aux:dummy") != entity::Tag());
-	ensure(tsc("role::sw:amusement") != entity::Tag());
-	ensure(tsc("role::sw:server{}") == entity::Tag());
-	ensure(tsc("role::{}") == entity::Tag());
-	ensure(tsc("role::{") == entity::Tag());
-	ensure(tsc("role::}") == entity::Tag());
-
-	ts = tsc.parseTagList("role::{TODO,sw:server,aux:dummy,sw:amusement}");
-	ensure_equals(ts.size(), 4u);
-	ensure(ts.contains(tsc("role::TODO")));
-	ensure(ts.contains(tsc("role::sw:server")));
-	ensure(ts.contains(tsc("role::aux:dummy")));
-	ensure(ts.contains(tsc("role::sw:amusement")));
-
-	ts = tsc.parseTagList("role::{TODO,aux:dummy}, role::sw:{server,amusement}");
-	ensure_equals(ts.size(), 4u);
-	ensure(ts.contains(tsc("role::TODO")));
-	ensure(ts.contains(tsc("role::sw:server")));
-	ensure(ts.contains(tsc("role::aux:dummy")));
-	ensure(ts.contains(tsc("role::sw:amusement")));
-}
-
-}
-#endif
-#endif
-#endif
-// vim:set ts=4 sw=4:
diff --git a/ept/debtags/maint/serializer.test.h b/ept/debtags/maint/serializer.test.h
deleted file mode 100644
index 6a4f3a6..0000000
--- a/ept/debtags/maint/serializer.test.h
+++ /dev/null
@@ -1,133 +0,0 @@
-// -*- mode: c++; tab-width: 4; indent-tabs-mode: t -*-
-/**
- * @file
- * @author Enrico Zini (enrico) <enrico@enricozini.org>
- */
-
-/*
- * Tests for Debtags serialization filters
- *
- * Copyright (C) 2003-2007  Enrico Zini <enrico@debian.org>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307  USA
- */
-
-#include <ept/debtags/maint/serializer.h>
-#include <ept/debtags/maint/pkgid.h>
-#include <ept/debtags/maint/path.h>
-#include <ept/debtags/vocabulary.h>
-#include <ept/debtags/debtags.h>
-
-#include <tagcoll/coll/simple.h>
-
-#include <wibble/singleton.h>
-
-#include <ept/test.h>
-
-using namespace std;
-using namespace tagcoll;
-using namespace ept;
-using namespace ept::debtags;
-
-struct TestSerializer : DebtagsTestEnvironment
-{
-	Debtags debtags;
-	Vocabulary& voc;
-	PkgId& pkgid;
-
-	TestSerializer()
-		: voc(debtags.vocabulary()), pkgid(debtags.pkgid()) {}
-
-/* Test going from a stream of tag data <string, string> to a stream of tag
- * data <int, int> to a stream of tag data <Package, Tag> and finally back to a
- * stream of tag data <string, string>
- */
-	Test _1()
-{
-	// Source data <string, string>
-	coll::Simple<string, string> source;
-	source.insert(wibble::singleton(string("debtags")), wibble::singleton(string("use::editing")));
-	source.insert(wibble::singleton(string("debtags")), wibble::singleton(string("role::program")));
-
-	// <string, string> -> <int, int>
-	coll::Simple<int, int> dest;
-	source.output(stringToInt(pkgid, voc, inserter(dest)));
-
-	assert_eq(dest.itemCount(), 1u);
-	assert_eq(dest.tagCount(), 2u);
-
-	// <int, int> -> <Package, Tag>
-	coll::Simple<string, Tag> dest1;
-	dest.output(intToPkg(pkgid, voc, inserter(dest1)));
-
-	assert_eq(dest1.itemCount(), 1u);
-	assert_eq(dest1.tagCount(), 2u);
-
-	std::set<Tag> tags = dest1.getTagsOfItem("debtags");
-	assert_eq(tags.size(), 2u);
-
-	Tag useEditing = voc.tagByName("use::editing");
-	Tag roleProgram = voc.tagByName("role::program");
-
-	assert(tags.find(useEditing) != tags.end());
-	assert(tags.find(roleProgram) != tags.end());
-
-	// <Package, Tag> -> <string, string>
-	coll::Simple<string, string> dest2;
-	dest1.output(pkgToString(inserter(dest2)));
-
-	assert_eq(dest2.itemCount(), 1u);
-	assert_eq(dest2.tagCount(), 2u);
-
-	std::set<std::string> tags1 = dest2.getTagsOfItem("debtags");
-	assert_eq(tags1.size(), 2u);
-
-	assert(tags1.find("use::editing") != tags1.end());
-	assert(tags1.find("role::program") != tags1.end());
-}
-
-/* Test going from patch with strings to patch with ints and vice versa */
-	Test _2()
-{
-	PatchList<string, string> change;
-	change.addPatch(Patch<string, string>("debtags",
-				wibble::singleton(string("use::gameplaying")),
-				wibble::singleton(string("use::editing"))));
-
-	// Deserialise to ints
-	PatchList<int, int> intChange;
-	change.output(patchStringToInt(pkgid, voc, tagcoll::inserter(intChange)));
-	assert_eq(intChange.size(), 1u);
-	assert_eq(intChange.begin()->second.added.size(), 1u);
-	assert_eq(intChange.begin()->second.removed.size(), 1u);
-	
-	// Serialise back to strings
-	PatchList<string, string> change1;
-	intChange.output(patchIntToString(pkgid, voc, tagcoll::inserter(change1)));
-	assert_eq(change1.size(), 1u);
-	assert_eq(change1.begin()->first, string("debtags"));
-	assert_eq(change1.begin()->second.item, string("debtags"));
-	assert_eq(change1.begin()->second.added.size(), 1u);
-	assert_eq(*change1.begin()->second.added.begin(), string("use::gameplaying"));
-	assert_eq(change1.begin()->second.removed.size(), 1u);
-	assert_eq(*change1.begin()->second.removed.begin(), string("use::editing"));
-}
-
-};
-
-#include <tagcoll/coll/simple.tcc>
-#include <tagcoll/patch.tcc>
-
-// vim:set ts=4 sw=4:
diff --git a/ept/debtags/maint/sourcedir.cc b/ept/debtags/maint/sourcedir.cc
index 79f0477..9b008fb 100644
--- a/ept/debtags/maint/sourcedir.cc
+++ b/ept/debtags/maint/sourcedir.cc
@@ -1,5 +1,5 @@
 #include <ept/debtags/maint/sourcedir.h>
-#include <ept/debtags/maint/vocabularymerger.h>
+#include <ept/debtags/vocabulary.h>
 #include <ept/debtags/maint/path.h>
 
 #include <wibble/string.h>
@@ -97,6 +97,7 @@ void SourceDir::readVocabularies(Vocabulary& out)
 
 	for (const_iterator d = begin(); d != end(); ++d)
 	{
+		if (d->d_name[0] == '.') continue;
 		FileType type = fileType(d->d_name);
 		if (type == VOC)
 		{
diff --git a/ept/debtags/maint/sourcedir.h b/ept/debtags/maint/sourcedir.h
index f970155..988ae24 100644
--- a/ept/debtags/maint/sourcedir.h
+++ b/ept/debtags/maint/sourcedir.h
@@ -30,7 +30,7 @@
 namespace ept {
 namespace debtags {
 
-class VocabularyMerger;
+class Vocabulary;
 
 /**
  * Access a directory containing Debtags data files
diff --git a/ept/debtags/maint/vocabularymerger.test.h b/ept/debtags/maint/vocabularymerger.test.h
deleted file mode 100644
index 4443a22..0000000
--- a/ept/debtags/maint/vocabularymerger.test.h
+++ /dev/null
@@ -1,144 +0,0 @@
-/*
- * Merge different vocabularies together and create the tag and facet indexes
- *
- * Copyright (C) 2003-2007  Enrico Zini <enrico@debian.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- */
-
-#include <wibble/test.h>
-#include <ept/debtags/maint/vocabularymerger.h>
-#include <tagcoll/input/string.h>
-
-using namespace std;
-using namespace tagcoll;
-
-struct TestVocabularyMerger {
-
-    inline static const char* indexref(const char* index, int id)
-    {
-	return index + ((int*)index)[id];
-    }
-
-
-    Test _1()
-{
-	string voc1 =
-		"Facet: taste\n"
-		"Description: Taste\n\n"
-		"Tag: taste::sweet\n"
-		"Description: Sweet\n\n"
-		"Tag: taste::salty\n"
-		"Description: Salty\n\n";
-	string voc2 =
-		"Facet: smell\n"
-		"Description: Smell\n\n"
-		"Tag: smell::fresh\n"
-		"Description: Fresh\n\n"
-		"Tag: smell::mold\n"
-		"Description: Mold\n\n";
-	tagcoll::input::String in1(voc1);
-	tagcoll::input::String in2(voc2);
-
-	ept::debtags::VocabularyMerger vm;
-
-	// Read and merge the two vocabulary samples
-	vm.read(in1);
-	vm.read(in2);
-
-	// Write the merged vocabulary to /dev/null (but generate offsets and indexes in the meantime)
-	vm.write("/dev/null");
-
-	// Create the facet index
-	char facetIndex[vm.facetIndexer().encodedSize()];
-	vm.facetIndexer().encode(facetIndex);
-
-	// Create the tag index
-	char tagIndex[vm.tagIndexer().encodedSize()];
-	vm.tagIndexer().encode(tagIndex);
-
-	// Check that the facet names have been encoded correctly and in order
-	assert_eq(string(indexref(facetIndex, 0) + 4*sizeof(int)), "smell");
-	assert_eq(string(indexref(facetIndex, 1) + 4*sizeof(int)), "taste");
-
-	// Check the first and last tag indexes for the facets
-	assert_eq(((int*)indexref(facetIndex, 0))[2], 0);
-	assert_eq(((int*)indexref(facetIndex, 0))[3], 1);
-	assert_eq(((int*)indexref(facetIndex, 1))[2], 2);
-	assert_eq(((int*)indexref(facetIndex, 1))[3], 3);
-
-	// Check that the tag names have been encoded correctly and in order
-	assert_eq(string(indexref(tagIndex, 0) + 3*sizeof(int)), "smell::fresh");
-	assert_eq(string(indexref(tagIndex, 1) + 3*sizeof(int)), "smell::mold");
-	assert_eq(string(indexref(tagIndex, 2) + 3*sizeof(int)), "taste::salty");
-	assert_eq(string(indexref(tagIndex, 3) + 3*sizeof(int)), "taste::sweet");
-
-	// Check the facet indexes for the tags
-	assert_eq(((int*)indexref(tagIndex, 0))[2], 0);
-	assert_eq(((int*)indexref(tagIndex, 1))[2], 0);
-	assert_eq(((int*)indexref(tagIndex, 2))[2], 1);
-	assert_eq(((int*)indexref(tagIndex, 3))[2], 1);
-}
-
-// Test parsing a vocabulary with a tag without a defined facet
-    Test _2()
-{
-	string voc =
-		"Tag: foo::bar\n"
-		"Description: Tag without facet\n"
-		" VocabularyMerged should behave fine in this case.\n\n";
-	tagcoll::input::String in(voc);
-
-	ept::debtags::VocabularyMerger vm;
-	vm.read(in);
-
-	// Write the merged vocabulary to /dev/null (but generate offsets and indexes in the meantime)
-	vm.write("/dev/null");
-
-	// Create the facet index
-	char facetIndex[vm.facetIndexer().encodedSize()];
-	vm.facetIndexer().encode(facetIndex);
-
-	// Create the tag index
-	char tagIndex[vm.tagIndexer().encodedSize()];
-	vm.tagIndexer().encode(tagIndex);
-}
-
-// Test parsing a vocabulary with a facet without tags
-    Test _3()
-{
-	string voc =
-		"Facet: empty\n"
-		"Description: Facet without tags\n"
-		" VocabularyMerged used to segfault in this case.\n\n";
-	tagcoll::input::String in(voc);
-
-	ept::debtags::VocabularyMerger vm;
-	vm.read(in);
-
-	// Write the merged vocabulary to /dev/null (but generate offsets and indexes in the meantime)
-	vm.write("/dev/null");
-
-	// Create the facet index
-	char facetIndex[vm.facetIndexer().encodedSize()];
-	vm.facetIndexer().encode(facetIndex);
-
-	// Create the tag index
-	char tagIndex[vm.tagIndexer().encodedSize()];
-	vm.tagIndexer().encode(tagIndex);
-}
-
-};
-// vim:set ts=4 sw=4:
diff --git a/ept/debtags/tag.cc b/ept/debtags/tag.cc
deleted file mode 100644
index 09392e9..0000000
--- a/ept/debtags/tag.cc
+++ /dev/null
@@ -1,138 +0,0 @@
-/* -*- C++ -*-
- * Copyright (C) 2005,2006  Enrico Zini <enrico@debian.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- */
-
-#include <ept/debtags/tag.h>
-#include <ept/debtags/vocabulary.h>
-#include <stdexcept>
-
-namespace ept {
-namespace debtags {
-
-static inline std::string constget(const std::map<std::string, std::string>& m,
-                                   const std::string& key)
-{
-	std::map<std::string, std::string>::const_iterator i = m.find(key);
-	if (i == m.end())
-		return std::string();
-	else
-		return i->second;
-}
-
-std::string Facet::name() const
-{
-	if (valid())
-		return m_tags->facetName(m_id);
-	throw std::out_of_range( "No name for this facet" );
-}
-std::string Facet::name(const std::string& d) const
-{
-	return valid() ? m_tags->facetName(m_id) : d;
-}
-
-std::string Facet::shortDescription() const
-{
-	if (valid())
-		return constget(m_tags->facetData(m_id), "_SD_");
-	throw std::out_of_range( "No short description for this facet" );
-}
-std::string Facet::shortDescription(const std::string& d) const
-{
-	return valid() ? constget(m_tags->facetData(m_id), "_SD_") : d;
-}
-
-std::string Facet::longDescription() const
-{
-	if (valid())
-		return constget(m_tags->facetData(m_id), "Description");
-	throw std::out_of_range( "No long description for this facet" );
-}
-std::string Facet::longDescription(const std::string& d) const
-{
-	return valid() ? constget(m_tags->facetData(m_id), "Description") : d;
-}
-
-bool Facet::hasTag(const std::string& name) const
-{
-	if (!valid())
-		throw std::out_of_range( "hasTag() called on an invalid facet" );
-	return m_tags->hasTag(this->name() + "::" + name);
-}
-
-std::set< Tag > Facet::tags() const
-{
-	if (!valid())
-		throw std::out_of_range( "tags() called on an invalid facet" );
-	return m_tags->tags(m_id);
-}
-
-
-Facet Tag::facet() const
-{
-	if (valid())
-		return m_tags->facetByTag(m_id);
-	throw std::out_of_range( "No facet for this tag" );
-}
-
-std::string Tag::name() const
-{
-	if (valid())
-		return m_tags->tagShortName(m_id);
-	throw std::out_of_range( "No name for this tag" );
-}
-std::string Tag::name(const std::string& d) const
-{
-	return valid() ? m_tags->tagShortName(m_id) : d;
-}
-
-std::string Tag::fullname() const
-{
-	if (valid())
-		return m_tags->tagName(m_id);
-	throw std::out_of_range( "No full name for this tag" );
-}
-std::string Tag::fullname(const std::string& d) const
-{
-	return valid() ? m_tags->tagName(m_id) : d;
-}
-
-std::string Tag::shortDescription() const
-{
-	if (valid())
-		return constget(m_tags->tagData(m_id), "_SD_");
-	throw std::out_of_range( "No short description for this tag" );
-}
-std::string Tag::shortDescription(const std::string& d) const
-{
-	return valid() ? constget(m_tags->tagData(m_id), "_SD_") : d;
-}
-
-std::string Tag::longDescription() const
-{
-	if (valid())
-		return constget(m_tags->tagData(m_id), "Description");
-	throw std::out_of_range( "No long description for this tag" );
-}
-std::string Tag::longDescription(const std::string& d) const
-{
-	return valid() ? constget(m_tags->tagData(m_id), "Description") : d;
-}
-
-}
-}
-
-// vim:set ts=3 sw=3:
diff --git a/ept/debtags/tag.h b/ept/debtags/tag.h
deleted file mode 100644
index bb7488f..0000000
--- a/ept/debtags/tag.h
+++ /dev/null
@@ -1,251 +0,0 @@
-// -*- C++ -*-
-#ifndef EPT_DEBTAGS_TAG_H
-#define EPT_DEBTAGS_TAG_H
-
-/** \file
- * Debtags facets and tags
- */
-
-/*
- * Copyright (C) 2005,2006,2007  Enrico Zini <enrico@debian.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- */
-
-#include <set>
-#include <string>
-
-namespace ept {
-namespace debtags {
-
-class Vocabulary;
-
-class Tag;
-
-/**
- * Representation of a facet.
- *
- * ept::debtags::Facet represents a Facet with all its informations.
- * It is guaranteed to have fast value-copy semantics, so it can be passed
- * around freely and efficiently without worrying about memory management
- * issues.
- *
- * The class is normally instantiated using a Vocabulary:
- * \code
- * 	Facet facet = vocabulary.faceByName("made-of");
- * \endcode
- *
- * Facets can contain an "invalid" value, in which case using any of their
- * methods will likely produce segfault.  The "invalid" facets are useful as
- * "none" return values:
- *
- * \code
- *    Facet facet = vocabulary.facetByName("made-of");
- *    if (!facet)
- *       throw SomeException("facet \"made-of\" has not been defined");
- * \endcode
- */
-class Facet
-{
-protected:
-	const Vocabulary* m_tags;
-	int m_id;
-
-	Facet(const Vocabulary* tags, int id) : m_tags(tags), m_id(id) {}
-
-public:
-	Facet() : m_tags(0), m_id(-1) {}
-	~Facet() {}
-
-	bool operator==(const Facet& f) const { return m_id == f.m_id; }
-	bool operator!=(const Facet& f) const { return m_id != f.m_id; }
-	bool operator<(const Facet& f) const { return m_id < f.m_id; }
-
-	/**
-	 * Return true if the facet is valid
-	 */
-	operator bool() const { return m_id != -1; }
-	bool valid() const { return m_id != -1; }
-
-	/**
-	 * Return the name of the facet
-	 * @throws std::out_of_range if the facet is not valid
-	 */
-	std::string name() const;
-	/**
-	 * Return the name of the facet
-	 * 
-	 * Returns d if the facet is not valid.
-	 */
-	std::string name(const std::string& d) const;
-
-	/**
-	 * Return the short description of the facet
-	 * @throws std::out_of_range if the facet is not valid
-	 */
-	std::string shortDescription() const;
-	/**
-	 * Return the short description of the facet
-	 *
-	 * Returns d if the facet is not valid.
-	 */
-	std::string shortDescription(const std::string& d) const;
-
-	/**
-	 * Return the long description of the facet
-	 * @throws std::out_of_range if the facet is not valid
-	 */
-	std::string longDescription() const;
-	/**
-	 * Return the long description of the facet
-	 *
-	 * Returns d if the facet is not valid.
-	 */
-	std::string longDescription(const std::string& d) const;
-
-	/**
-	 * Return true if the facet has a tag with the given name (name, not fullname)
-	 */
-	bool hasTag(const std::string& name) const;
-
-	/**
-	 * Return the list of tags in this facet
-	 */
-	std::set<Tag> tags() const;
-
-	/**
-	 * Return the ID of this facet
-	 *
-	 * @warning This method is exported to help in writing tests, but it is not
-	 * part of the normal API: do not use it, because future implementations may
-	 * not be based on IDs and therefore not have this method.
-	 */
-	int id() const { return m_id; }
-
-	friend class Vocabulary;
-};
-
-/**
- * Representation of a tag.
- *
- * ept::debtags::Tag represents a Tag with all its informations.
- * It is guaranteed to have fast value-copy semantics, so it can be passed
- * around freely and efficiently without worrying about memory management
- * issues.
- *
- * The class is normally instantiated using a Vocabulary:
- * \code
- * 	Tag tag = vocabulary.tagByName("made-of::lang:c++");
- * \endcode
- *
- * Tags can contain an "invalid" value, in which case using any of their
- * methods will likely produce segfault.  The "invalid" facets are useful as
- * "none" return values:
- *
- * \code
- *    Tag tag = vocabulary.tagByName("made-of");
- *    if (!tag)
- *       throw SomeException("tag \"mytag\" has not been defined");
- * \endcode
- */
-class Tag
-{
-protected:
-	const Vocabulary* m_tags;
-	int m_id;
-
-	Tag(const Vocabulary* tags, int id) : m_tags(tags), m_id(id) {}
-
-public:
-	typedef std::set< Tag > Set;
-
-	Tag() : m_tags(0), m_id(-1) {}
-	~Tag() {}
-
-	bool operator==(const Tag& f) const { return m_id == f.m_id; }
-	bool operator!=(const Tag& f) const { return m_id != f.m_id; }
-	bool operator<(const Tag& f) const { return m_id < f.m_id; }
-
-	operator bool() const { return m_id != -1; }
-	bool valid() const { return m_id != -1; }
-
-	Facet facet() const;
-
-	/**
-	 * Return the name of the tag, without the facet:: prefix
-	 * @throws std::out_of_range if the tag is not valid
-	 */
-	std::string name() const;
-	/**
-	 * Return the short description of the tag
-	 *
-	 * Returns d if the tag is not valid.
-	 */
-	std::string name(const std::string& d) const;
-
-	/**
-	 * Return the name of the tag, with the facet:: prefix
-	 * @throws std::out_of_range if the tag is not valid
-	 */
-	std::string fullname() const;
-	/**
-	 * Return the short description of the tag
-	 *
-	 * Returns d if the tag is not valid.
-	 */
-	std::string fullname(const std::string& d) const;
-
-	/**
-	 * Return the short description of the tag
-	 * @throws std::out_of_range if the tag is not valid
-	 */
-	std::string shortDescription() const;
-	/**
-	 * Return the short description of the tag
-	 *
-	 * Returns d if the tag is not valid.
-	 */
-	std::string shortDescription(const std::string& d) const;
-
-	/**
-	 * Return the long description of the tag
-	 *
-	 * @throws std::out_of_range if the tag is not valid
-	 */
-	std::string longDescription() const;
-	/**
-	 * Return the long description of the tag
-	 *
-	 * Returns d if the tag is not valid.
-	 */
-	std::string longDescription(const std::string& d) const;
-
-	/**
-	 * Return the ID of this tag
-	 *
-	 * @warning This method is exported to help in writing tests, but it is not
-	 * part of the normal API: do not use it, because future implementations may
-	 * not be based on IDs and therefore not have this method.
-	 */
-	int id() const { return m_id; }
-
-	friend class Vocabulary;
-};
-
-}
-}
-
-// vim:set ts=3 sw=3:
-#endif
diff --git a/ept/debtags/tag.test.h b/ept/debtags/tag.test.h
deleted file mode 100644
index 998147d..0000000
--- a/ept/debtags/tag.test.h
+++ /dev/null
@@ -1,107 +0,0 @@
-/*
- * Copyright (C) 2005,2007  Enrico Zini <enrico@debian.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- */
-
-#if 0
-#include <ept/tests/test-utils.h>
-#include <ept/debtags/tag.h>
-#include <ept/debtags/vocabulary.h>
-#include <ept/debtags/maint/path.h>
-
-#include <tagcoll/utils/set.h>
-
-using namespace std;
-using namespace ept::debtags;
-
-namespace tut {
-
-struct ept_debtags_tag_shar
-{
-	Path::OverrideDebtagsSourceDir odsd;
-	Path::OverrideDebtagsIndexDir odid;
-	Path::OverrideDebtagsUserSourceDir odusd;
-	Path::OverrideDebtagsUserIndexDir oduid;
-	Vocabulary voc;
-
-	ept_debtags_tag_shar()
-		: odsd("./"), odid("./"), odusd("./"), oduid("./") {}
-};
-
-TESTGRP( ept_debtags_tag );
-
-template<> template<>
-void to::test<1>()
-{
-	Tag a, b;
-	ensure( a == b );
-	ensure( !a.valid() );
-	ensure( !b.valid() );
-}
-
-template<> template<>
-void to::test<2>()
-{
-	Tag a;
-	int x = 1;
-	try {
-		a.shortDescription();
-		x = 2;
-	} catch (...) {
-		x = 3;
-	}
-	ensure_equals( x, 3 );
-}
-
-template<> template<>
-void to::test< 3 >()
-{
-	Facet f = voc.facetByName( "works-with" );
-	Tag t = voc.tagByName( "works-with::people" );
-	ensure( t.valid() );
-	ensure( f.valid() );
-	ensure( t.facet() == f );
-	ensure( tagcoll::utils::set_contains(f.tags(), t) );
-}
-
-template<> template<>
-void to::test< 4 >()
-{
-	Facet f = voc.facetByName( "works-with" );
-	Tag t = voc.tagByName( "works-with::people" );
-	ensure( t.valid() );
-	ensure( f.valid() );
-	ensure( f.hasTag( t.name() ) );
-}
-
-template<> template<>
-void to::test< 5 >()
-{
-	Tag t = voc.tagByName( "works-with::people" );
-	ensure( t.valid() );
-	ensure( t.facet().hasTag( t.name() ) );
-	ensure( tagcoll::utils::set_contains(t.facet().tags(), t) );
-}
-
-}
-
-/*
-#include <ept/cache/tag.tcc>
-#include <ept/cache/debtags/vocabulary.tcc>
-*/
-
-// vim:set ts=3 sw=3:
-#endif
diff --git a/ept/debtags/vocabulary.cc b/ept/debtags/vocabulary.cc
index 7f3a6b7..25887fa 100644
--- a/ept/debtags/vocabulary.cc
+++ b/ept/debtags/vocabulary.cc
@@ -39,6 +39,52 @@ using namespace tagcoll;
 namespace ept {
 namespace debtags {
 
+namespace voc {
+std::string Data::shortDescription() const
+{
+	if (m_desc.empty())
+	{
+		string d = longDescription();
+		if (d.empty()) return d;
+		size_t pos = d.find('\n');
+		if (pos == std::string::npos)
+			m_desc = d;
+		else
+			m_desc = d.substr(0, pos);
+	}
+	return m_desc;
+}
+
+std::string Data::longDescription() const
+{
+	const_iterator i = find("Description");
+	if (i == end()) return std::string();
+	return i->second;
+}
+
+bool FacetData::hasTag(const std::string& name) const
+{
+	return m_tags.find(name) != m_tags.end();
+}
+
+const TagData* FacetData::tagData(const std::string& name) const
+{
+	std::map<std::string, voc::TagData>::const_iterator i = m_tags.find(name);
+	if (i == m_tags.end()) return 0;
+	return &i->second;
+}
+
+std::set<std::string> FacetData::tags() const
+{
+	std::set<std::string> res;
+	for (std::map<std::string, voc::TagData>::const_iterator i = m_tags.begin();
+			i != m_tags.end(); ++i)
+		res.insert(i->first);
+	return res;
+}
+
+}
+
 static inline std::string getfacet(const std::string& tagname)
 {
 	size_t p = tagname.find("::");
@@ -67,11 +113,11 @@ Vocabulary::~Vocabulary()
 
 voc::TagData& voc::FacetData::obtainTag(const std::string& name)
 {
-	std::map<std::string, voc::TagData>::iterator i = tags.find(name);
-	if (i == tags.end())
+	std::map<std::string, voc::TagData>::iterator i = m_tags.find(name);
+	if (i == m_tags.end())
 	{
 		// Create the tag if it's missing
-		pair<std::map<std::string, TagData>::iterator, bool> res = tags.insert(make_pair<std::string, TagData>(name, TagData()));
+		pair<std::map<std::string, TagData>::iterator, bool> res = m_tags.insert(make_pair<std::string, TagData>(name, TagData()));
 		i = res.first;
 		i->second.name = name;
 	}
@@ -93,15 +139,7 @@ voc::FacetData& Vocabulary::obtainFacet(const std::string& name)
 
 voc::TagData& Vocabulary::obtainTag(const std::string& fullname)
 {
-	size_t p = fullname.find("::");
-	if (p == string::npos)
-	{
-		voc::FacetData& facet = obtainFacet("legacy");
-		return facet.obtainTag(fullname);
-	} else {
-		voc::FacetData& facet = obtainFacet(fullname.substr(0, p));
-		return facet.obtainTag(fullname.substr(p + 2));
-	}
+	return obtainFacet(getfacet(fullname)).obtainTag(fullname);
 }
 
 
@@ -115,7 +153,7 @@ bool Vocabulary::hasTag(const std::string& name) const
 {
 	const voc::FacetData* f = facetData(getfacet(name));
 	if (!f) return false;
-	return f->tags.find(name) != f->tags.end();
+	return f->hasTag(name);
 }
 
 const voc::FacetData* Vocabulary::facetData(const std::string& name) const
@@ -131,10 +169,7 @@ const voc::TagData* Vocabulary::tagData(const std::string& tagname) const
 	const voc::FacetData* f = facetData(getfacet(tagname));
 	if (!f) return 0;
 
-	std::map<std::string, voc::TagData>::const_iterator i = f->tags.find(tagname);
-	if (i == f->tags.end()) return 0;
-
-	return &i->second;
+	return f->tagData(tagname);
 }
 
 std::set<std::string> Vocabulary::facets() const
@@ -151,21 +186,17 @@ std::set<std::string> Vocabulary::tags() const
 	std::set<std::string> res;
 	for (std::map<std::string, voc::FacetData>::const_iterator i = m_facets.begin();
 			i != m_facets.end(); ++i)
-		for (std::map<std::string, voc::TagData>::const_iterator j = i->second.tags.begin();
-				j != i->second.tags.end(); ++j)
+		for (std::map<std::string, voc::TagData>::const_iterator j = i->second.m_tags.begin();
+				j != i->second.m_tags.end(); ++j)
 			res.insert(j->first);
 	return res;
 }
 
 std::set<std::string> Vocabulary::tags(const std::string& facet) const
 {
-	std::set<std::string> res;
 	const voc::FacetData* f = facetData(facet);
-	if (!f) return res;
-	for (std::map<std::string, voc::TagData>::const_iterator i = f->tags.begin();
-			i != f->tags.end(); ++i)
-		res.insert(i->first);
-	return res;
+	if (!f) return std::set<std::string>();
+	return f->tags();
 }
 
 void Vocabulary::read(tagcoll::input::Input& input)
@@ -309,8 +340,8 @@ void Vocabulary::write(FILE* out)
 			writeDebStyleField(out, j->first, j->second);
 		fputc('\n', out);
 
-		for (std::map<std::string, voc::TagData>::iterator t = f->second.tags.begin();
-				t != f->second.tags.end(); t++)
+		for (std::map<std::string, voc::TagData>::iterator t = f->second.m_tags.begin();
+				t != f->second.m_tags.end(); t++)
 		{
 			//fprintf(stderr, "Writing tag %.*s\n", PFSTR(t->first));
 			writeDebStyleField(out, "Tag", f->first + "::" + t->first);
diff --git a/ept/debtags/vocabulary.h b/ept/debtags/vocabulary.h
index 59b4905..c126539 100644
--- a/ept/debtags/vocabulary.h
+++ b/ept/debtags/vocabulary.h
@@ -24,11 +24,9 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
-#include <ept/debtags/tag.h>
-#include <tagcoll/diskindex/mmap.h>
-
 #include <string>
 #include <vector>
+#include <set>
 #include <map>
 
 namespace tagcoll {
@@ -41,23 +39,106 @@ namespace ept {
 namespace debtags {
 namespace voc {
 
-class TagData : public std::map<std::string, std::string>
+/// Base class for facet and tag data
+struct Data : public std::map<std::string, std::string>
 {
+protected:
+	// Cache the parsed short description
+	mutable std::string m_desc;
+
 public:
 	std::string name;
 
+	/**
+	 * Return the short description of the tag
+	 * @throws std::out_of_range if the tag is not valid
+	 */
+	std::string shortDescription() const;
+
+	/**
+	 * Return the long description of the tag
+	 *
+	 * @throws std::out_of_range if the tag is not valid
+	 */
+	std::string longDescription() const;
+};
+
+/**
+ * Representation of a tag.
+ *
+ * ept::debtags::Tag represents a Tag with all its informations.
+ * It is guaranteed to have fast value-copy semantics, so it can be passed
+ * around freely and efficiently without worrying about memory management
+ * issues.
+ *
+ * The class is normally instantiated using a Vocabulary:
+ * \code
+ * 	Tag tag = vocabulary.tagByName("made-of::lang:c++");
+ * \endcode
+ *
+ * Tags can contain an "invalid" value, in which case using any of their
+ * methods will likely produce segfault.  The "invalid" facets are useful as
+ * "none" return values:
+ *
+ * \code
+ *    Tag tag = vocabulary.tagByName("made-of");
+ *    if (!tag)
+ *       throw SomeException("tag \"mytag\" has not been defined");
+ * \endcode
+ */
+struct TagData : public Data
+{
 	TagData() {}
+
+	// Facet facet() const;
 };
 
-class FacetData : public std::map<std::string, std::string>
+/**
+ * Representation of a facet.
+ *
+ * ept::debtags::Facet represents a Facet with all its informations.
+ * It is guaranteed to have fast value-copy semantics, so it can be passed
+ * around freely and efficiently without worrying about memory management
+ * issues.
+ *
+ * The class is normally instantiated using a Vocabulary:
+ * \code
+ * 	Facet facet = vocabulary.faceByName("made-of");
+ * \endcode
+ *
+ * Facets can contain an "invalid" value, in which case using any of their
+ * methods will likely produce segfault.  The "invalid" facets are useful as
+ * "none" return values:
+ *
+ * \code
+ *    Facet facet = vocabulary.facetByName("made-of");
+ *    if (!facet)
+ *       throw SomeException("facet \"made-of\" has not been defined");
+ * \endcode
+ */
+class FacetData : public Data
 {
 public:
-	std::string name;
-	std::map<std::string, TagData> tags;
+	std::map<std::string, TagData> m_tags;
 
 	FacetData() {}
 
 	TagData& obtainTag(const std::string& fullname);
+
+	/**
+	 * Return true if the facet has a tag with the given name (name, not fullname)
+	 */
+	bool hasTag(const std::string& name) const;
+
+	/**
+	 * Return the tag data for the given tag, or 0 if not found
+	 */
+	const TagData* tagData(const std::string& name) const;
+
+	/**
+	 * Return the list of tags in this facet
+	 */
+	std::set<std::string> tags() const;
 };
 
 }
diff --git a/ept/debtags/vocabulary.test.h b/ept/debtags/vocabulary.test.h
index 977eef5..a6ed1b8 100644
--- a/ept/debtags/vocabulary.test.h
+++ b/ept/debtags/vocabulary.test.h
@@ -20,19 +20,11 @@
 
 #include <wibble/test.h>
 #include <ept/debtags/vocabulary.h>
-#include <ept/debtags/maint/vocabularymerger.h>
 #include <ept/debtags/maint/path.h>
 #include <tagcoll/utils/set.h>
 #include <tagcoll/input/stdio.h>
 
-#include "debtags.test.h"
-
-// This is not exported by default
-namespace ept {
-namespace debtags {
-int tagcmp(const char* tag1, const char* tag2);
-}
-}
+#include "ept/test.h"
 
 using namespace std;
 using namespace tagcoll::utils;
@@ -62,11 +54,11 @@ struct TestVocabulary : DebtagsTestEnvironment
 
         Test _4()
 {
-    Tag people = tags().tagByName( "works-with::people" ),
-                midgets = tags().tagByName( "works-with::midgets" ),
-                blahg = tags().tagByName( "works-with::blahg" ),
-                text = tags().tagByName( "works-with::text" ),
-                people2 = tags().tagByName( "works-with::people" );
+    const voc::TagData *people = tags().tagData( "works-with::people" ),
+                       *midgets = tags().tagData( "works-with::midgets" ),
+                       *blahg = tags().tagData( "works-with::blahg" ),
+                       *text = tags().tagData( "works-with::text" ),
+                       *people2 = tags().tagData( "works-with::people" );
     assert( people != midgets );
     assert( people != text );
     assert( people != blahg );
@@ -78,11 +70,11 @@ struct TestVocabulary : DebtagsTestEnvironment
 
         Test _5()
 {
-    Tag a = tags().tagByName( "works-with::people" ),
-                b = tags().tagByName( "works-with::midgets" );
-	std::set< Tag > s = tags().tags(),
-                         f = tags().tags( "works-with" ),
-                         n = tags().tags( "nonsense" );
+    std::string a = "works-with::people",
+                b = "works-with::midgets";
+    std::set<std::string> s = tags().tags(),
+                          f = tags().tags( "works-with" ),
+                          n = tags().tags( "nonsense" );
     assert( set_contains(s, a) );
     assert( set_contains(f, a) );
     assert( set_contains(s, f) );
@@ -93,38 +85,34 @@ struct TestVocabulary : DebtagsTestEnvironment
 
         Test _6()
 {
-	Facet f = tags().facetByName( "works-with" );
-    Tag t = tags().tagByName( "works-with::people" );
-	assert_eq(f.name(), "works-with");
-	assert_eq(t.name(), "people");
-	assert_eq(t.fullname(), "works-with::people");
+	const voc::FacetData* f = tags().facetData( "works-with" );
+	assert(f);
+	assert_eq(f->name, "works-with");
+
+	const voc::TagData* t = tags().tagData( "works-with::people" );
+	assert(t);
+	assert_eq(t->name, "works-with::people");
 }
 
         Test _7()
 {
-    Facet f = tags().facetByName( "works-with" );
-	std::set< Tag > x = tags().tags( "works-with" );
-    assert( x == f.tags() );
+	const voc::FacetData* f = tags().facetData( "works-with" );
+	std::set<std::string> x = tags().tags( "works-with" );
+	assert( x == f->tags() );
 }
 
         Test _8()
 {
-    Facet f = tags().facetByName( "does-not-work-with" );
-    int x = 1;
-    try {
-        f.tags();
-        x = 2;
-    } catch (...) {
-        x = 3;
-    }
-    assert_eq( x, 3 );
+    const voc::FacetData* f = tags().facetData( "does-not-work-with" );
+    assert(!f);
 }
 
         Test _9()
 {
-    Facet f = tags().facetByName( "legacy" );
-    assert_eq(f.shortDescription(), "");
-    assert_eq(f.longDescription(), "");
+    const voc::FacetData* f = tags().facetData( "legacy" );
+    assert(f);
+    assert_eq(f->shortDescription(), "");
+    assert_eq(f->longDescription(), "");
     //assert_eq(f.shortDescription( "weehee" ), "weehee");
 }
 
@@ -136,31 +124,26 @@ struct TestVocabulary : DebtagsTestEnvironment
 
         Test _11()
 {
-	// assert that all tags are somehow working
-	std::set<Facet> facets = tags().facets();
+	// assert that all facets are somehow working
+	std::set<std::string> facets = tags().facets();
 
-	for (std::set<Facet>::const_iterator i = facets.begin();
+	for (std::set<std::string>::const_iterator i = facets.begin();
 			i != facets.end(); i++)
 	{
-		i->name(string("foo"));
-		i->shortDescription(string("foo"));
-		i->longDescription(string("foo"));
-		i->tags();
+		const voc::FacetData* f = tags().facetData(*i);
+		assert(f);
 	}
 }
 
         Test _12()
 {
 	// assert that all tags are somehow working
-	std::set<Tag> tags = this->tags().tags();
-
-	for (std::set<Tag>::const_iterator i = tags.begin();
+	std::set<std::string> tags = this->tags().tags();
+	for (std::set<std::string>::const_iterator i = tags.begin();
 			i != tags.end(); i++)
 	{
-		i->name(string("foo"));
-		i->fullname(string("foo"));
-		i->shortDescription(string("foo"));
-		i->longDescription(string("foo"));
+		const voc::TagData* t = this->tags().tagData(*i);
+		assert(t);
 	}
 }
 
@@ -169,126 +152,57 @@ struct TestVocabulary : DebtagsTestEnvironment
 {
 	Vocabulary& tags = this->tags();
 
-	Tag first = tags.tagByName("accessibility::TODO");
-	assert(first != Tag());
-	assert_eq(first.fullname(), string("accessibility::TODO"));
-	assert_eq(first.name(), string("TODO"));
-	assert_eq(first.shortDescription(), string("Need an extra tag"));
-
-	Tag last = tags.tagByName("x11::xserver");
-	assert(last != Tag());
-	assert_eq(last.fullname(), string("x11::xserver"));
-	assert_eq(last.name(), string("xserver"));
-	assert_eq(last.shortDescription(), string("X Server"));
+	const voc::TagData* first = tags.tagData("accessibility::TODO");
+	assert(first);
+	assert_eq(first->name, string("accessibility::TODO"));
+	assert_eq(first->shortDescription(), string("Need an extra tag"));
+
+	const voc::TagData* last = tags.tagData("x11::xserver");
+	assert(last);
+	assert_eq(last->name, string("x11::xserver"));
+	assert_eq(last->shortDescription(), string("X Server"));
 }
 
         Test _14()
 {
 	// assert that it's possible to go from facet to ID and back
-	std::set<Facet> facets = tags().facets();
-
-	for (std::set<Facet>::const_iterator i = facets.begin();
-			i != facets.end(); i++)
-	{
-		Facet f = tags().facetByID(i->id());
-		assert_eq(*i, f);
-		assert_eq(i->name(), f.name());
-		assert_eq(i->shortDescription(), f.shortDescription());
-		assert_eq(i->longDescription(), f.longDescription());
-		assert_eq(i->tags().size(), f.tags().size());
-	}
+	// we don't use IDs anymore
 }
 
         Test _15()
 {
 	// assert that it's possible to go from tag to ID and back
-	std::set<Tag> tags = this->tags().tags();
-
-	for (std::set<Tag>::const_iterator i = tags.begin();
-			i != tags.end(); i++)
-	{
-		Tag t = this->tags().tagByID(i->id());
-		assert_eq(*i, t);
-		assert_eq(i->name(), t.name());
-		assert_eq(i->fullname(), t.fullname());
-		assert_eq(i->shortDescription(), t.shortDescription());
-		assert_eq(i->longDescription(), t.longDescription());
-	}
+	// we don't use IDs anymore
 }
 
         Test _16()
 {
 	// assert that facet IDs are distinct
-	std::set<Facet> facets = tags().facets();
-	std::set<int> ids;
-	for (std::set<Facet>::const_iterator i = facets.begin();
-			i != facets.end(); i++)
-		ids.insert(i->id());
-
-	assert_eq(facets.size(), ids.size());
+	// we don't use IDs anymore
 }
 
         Test _17()
 {
 	// assert that tag IDs are distinct
-	std::set<Tag> tags = this->tags().tags();
-	std::set<int> ids;
-	for (std::set<Tag>::const_iterator i = tags.begin();
-			i != tags.end(); i++)
-		ids.insert(i->id());
-
-	assert_eq(tags.size(), ids.size());
+	// we don't use IDs anymore
 }
 
         Test _18()
 {
 	// assert that all the tags are indexed
-	ept::debtags::VocabularyMerger voc;
-	tagcoll::input::Stdio in(ept::debtags::Path::vocabulary());
-	voc.read(in);
-	std::set<std::string> all = voc.tagNames();
-	for (std::set<std::string>::const_iterator i = all.begin();
-			i != all.end(); ++i)
-		assert(this->tags().hasTag(*i));
-
-	// There should be the same amount of tags in both
-	std::set<Tag> allTags = this->tags().tags();
-	assert_eq(all.size(), allTags.size());
+	// we don't use the index anymore
 }
 
         Test _19()
 {
 	// test the tagcmp function
-
-	// If unfaceted, same as strcmp
-	assert(ept::debtags::tagcmp("antani", "blinda") < 0);
-	assert(ept::debtags::tagcmp("blinda", "antani") > 0);
-	assert_eq(ept::debtags::tagcmp("antani", "antani"), 0);
-
-	// If the same and faceted, should work
-	assert_eq(ept::debtags::tagcmp("antani::blinda", "antani::blinda"), 0);
-
-	// With different facet names, work just as strcmp
-	assert(ept::debtags::tagcmp("antani::blinda", "blinda::blinda") < 0);
-	assert(ept::debtags::tagcmp("blinda::blinda", "antani::blinda") > 0);
-	assert(ept::debtags::tagcmp("anta::blinda", "antani::blinda") < 0);
-	assert(ept::debtags::tagcmp("antani::blinda", "anta::blinda") > 0);
-	assert(ept::debtags::tagcmp("anta::blinda", "anta-ni::blinda") < 0);
-	assert(ept::debtags::tagcmp("anta-ni::blinda", "anta::blinda") > 0);
-
-	// With same facet names, work just as strcmp on the tags
-	assert(ept::debtags::tagcmp("a::antani", "a::blinda") < 0);
-	assert(ept::debtags::tagcmp("a::blinda", "a::antani") > 0);
-	assert(ept::debtags::tagcmp("a::anta", "a::antani") < 0);
-	assert(ept::debtags::tagcmp("a::antani", "a::anta") > 0);
-	assert(ept::debtags::tagcmp("a::anta", "a::anta-ni") < 0);
-	assert(ept::debtags::tagcmp("a::anta-ni", "a::anta") > 0);
+	// we don't have tagcmp anymore
 }
 
         Test _20()
 {
 	// check that we're seeing all the tags for a facet
-	std::set<Tag> t = tags().tags("accessibility");
+	std::set<std::string> t = tags().tags("accessibility");
 	assert_eq(t.size(), 10u);
 
 	t = tags().tags("works-with-format");
@@ -306,10 +220,10 @@ struct TestVocabulary : DebtagsTestEnvironment
 
 	assert(!empty.hasData());
 
-	set<Facet> facets = empty.facets();
+	set<std::string> facets = empty.facets();
 	assert_eq(facets.size(), 0u);
 
-	set<Tag> tags = empty.tags();
+	set<std::string> tags = empty.tags();
 	assert_eq(tags.size(), 0u);
 }
 
diff --git a/ept/textsearch/extraindexers.cc b/ept/textsearch/extraindexers.cc
index 4fdfdd4..179688f 100644
--- a/ept/textsearch/extraindexers.cc
+++ b/ept/textsearch/extraindexers.cc
@@ -44,10 +44,10 @@ void AptTagsExtraIndexer::operator()(Xapian::Document& doc, const apt::PackageRe
 void DebtagsExtraIndexer::operator()(Xapian::Document& doc, const apt::PackageRecord& rec) const
 {
 	// Index tags as well
-	set<Tag> tags = debtags.getTagsOfItem(doc.get_data());
-	for (set<Tag>::const_iterator ti = tags.begin();
+	set<std::string> tags = debtags.getTagsOfItem(doc.get_data());
+	for (set<std::string>::const_iterator ti = tags.begin();
 			ti != tags.end(); ++ti)
-		doc.add_term("XT"+ti->fullname());
+		doc.add_term("XT"+*ti);
 }
 
 }