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#!/usr/bin/python
# this is a example how to access the build dependencies of a package
import apt
import apt_pkg
import sys
# main
cache = apt.Cache()
srcrecords = apt_pkg.SourceRecords()
# base package that we use for build-depends calculation
if len(sys.argv) < 2:
print "need a package name as argument"
sys.exit(1)
try:
pkg = base = cache[sys.argv[1]]
except KeyError:
print "No package %s found" % sys.argv[1]
sys.exit(1)
all_build_depends = set()
# get the build depdends for the package itself
srcpkg_name = base.candidate.source_name
print "srcpkg_name: %s " % srcpkg_name
if not srcpkg_name:
print "Can't find source package for '%s'" % pkg.name
srcrec = srcrecords.lookup(srcpkg_name)
if srcrec:
print "Files:"
print srcrecords.files
bd = srcrecords.build_depends
print "build-depends of the package: %s " % bd
for b in bd:
all_build_depends.add(b[0])
# calculate the build depends for all dependencies
depends = base.candidate.dependencies
for or_dep in depends:
for dep in or_dep.or_dependencies:
pkg = cache[dep.name]
srcpkg_name = pkg.candidate.source_name
if not srcpkg_name:
print "Can't find source package for '%s'" % pkg.name
continue
srcrec = srcrecords.lookup(srcpkg_name)
if srcrec:
#print srcrecords.package
#print srcrecords.binaries
bd = srcrecords.build_depends
#print "%s: %s " % (srcpkg_name, bd)
for b in bd:
all_build_depends.add(b[0])
print "\n".join(all_build_depends)
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