pkgtools/url2pkg: improve Python implementation

* verbose mode no longer crashes
* licenses and other variables are copied to the package Makefile
* several more automatic tests

2 files changed, 309 insertions, 47 deletions

diff --git a/pkgtools/url2pkg/files/url2pkg.py b/pkgtools/url2pkg/files/url2pkg.py
index 8b7a4be8f8d..612477a153a 100644
--- a/pkgtools/url2pkg/files/url2pkg.py
+++ b/pkgtools/url2pkg/files/url2pkg.py
@@ -1,5 +1,5 @@
 #! @PYTHONBIN@
-# $NetBSD: url2pkg.py,v 1.1 2019/10/03 09:37:41 rillig Exp $
+# $NetBSD: url2pkg.py,v 1.2 2019/10/03 12:52:54 rillig Exp $
 
 # Copyright (c) 2019 The NetBSD Foundation, Inc.
 # All rights reserved.
@@ -50,6 +50,7 @@ class Config:
         self.perl5 = '@PERL5@'
         self.pkgsrcdir = '@PKGSRCDIR@'
         self.pythonbin = '@PYTHONBIN@'
+        self.pkgdir = '.'  # only overridable for tests
         self.verbose = False
 
 
@@ -59,7 +60,7 @@ distname = ''
 
 def debug(fmt: str, *args):
     if config.verbose:
-        msg = fmt % map(repr, args)
+        msg = fmt.format(*map(repr, args)) if len(args) else fmt
         sys.stderr.write('url2pkg: %s\n' % msg)
 
 
@@ -219,10 +220,10 @@ def generate_initial_package(url):
         os.rename('Makefile', 'Makefile-url2pkg.bak')
     except OSError:
         pass
-    generate_initial_package_Makefile_lines(url).write_to('Makefile')
-    Lines(cvsid('@comment %s')).write_to('PLIST')
-    Lines().write_to('DESCR')
-    run_editor('Makefile', 5)
+    generate_initial_package_Makefile_lines(url).write_to(config.pkgdir + '/Makefile')
+    Lines(cvsid('@comment %s')).write_to(config.pkgdir + '/PLIST')
+    Lines().write_to(config.pkgdir + '/DESCR')
+    run_editor(config.pkgdir + '/Makefile', 5)
 
     bmake('distinfo')
     bmake('extract')
@@ -271,15 +272,15 @@ class Varassign:
 
 def find_package(pkgbase: str) -> str:
     candidates = glob.glob(config.pkgsrcdir + '/*/' + pkgbase)
-    debug('candidates for package %s are %s', pkgbase, candidates)
+    debug('candidates for package {0} are {1}', pkgbase, candidates)
     if len(candidates) != 1:
         return ''
     return candidates[0].replace(config.pkgsrcdir, '../..')
 
 
 def bmake(*args: str) -> None:
-    debug('running bmake %s', args)
-    subprocess.check_call([config.make] + list(args))
+    debug('running bmake {0}', args)
+    subprocess.check_call([config.make] + list(args), cwd=config.pkgdir)
 
 
 def show_var(varname: str) -> str:
@@ -346,7 +347,7 @@ class Lines:
         varassigns = []
         for (i, line) in enumerate(self.lines):
             m = re.search(r'^(#?[\w+\-]+?)([!+:?]?=)([ \t]*)([^#\\]*?)(\s*)(#.*|)$', line)
-            if m and m[1] == varname:
+            if m and m[1].lstrip('#') == varname:
                 varassigns.append(Varassign(i, m[1], m[2], m[3], m[4], m[5], m[6]))
         return varassigns
 
@@ -355,7 +356,7 @@ class Lines:
 
         varassign = self.unique_varassign(varname)
         if varassign is not None:
-            self.lines[varassign.index] = varassign.varname + varassign.op + varassign.indent + new_value
+            self.lines[varassign.index] = varname + varassign.op + varassign.indent + new_value
         return varassign is not None
 
     def append(self, varname: str, value: str) -> None:
@@ -502,6 +503,7 @@ class Adjuster:
         effective_env = dict(os.environ)
         effective_env.update(env)
 
+        debug('reading dependencies: cd {0} && env {1} {2}', cwd, env, cmd)
         output = subprocess.check_output(
             args=cmd,
             shell=True,
@@ -519,7 +521,7 @@ class Adjuster:
                 self.update_vars[m[1]] = m[2]
                 continue
             if line != '':
-                debug('unknown dependency line: %s', line)
+                debug('unknown dependency line: {0}', line)
 
         for dep_line in dep_lines:
             type, pkgbase, constraint, dir = dep_line
@@ -531,7 +533,7 @@ class Adjuster:
             if dir == '':
                 dir = find_package(pkgbase)
 
-            debug('add_dependency: %s %s %s %s', type, pkgbase, constraint, dir)
+            debug('add_dependency: {0} {1} {2} {3}', type, pkgbase, constraint, dir)
             self.add_dependency(type, pkgbase, constraint, dir)
 
     def wrksrc_find(self, what: Union[str, Callable]) -> Iterator[str]:
@@ -727,7 +729,7 @@ class Adjuster:
     def adjust_lines_python_module(self, lines: Lines, url: str):
 
         initial_lines = generate_initial_package_Makefile_lines(url)
-        current_lines = Lines.read_from('Makefile')
+        current_lines = self.makefile_lines
 
         if 'python' not in initial_lines.get('CATEGORIES'):
             return
@@ -752,7 +754,7 @@ class Adjuster:
             self.makefile_lines = tx_lines
             self.regenerate_distinfo = True
 
-    def generate_adjusted_Makefile_lines(self, url):
+    def generate_adjusted_Makefile_lines(self, url) -> Lines:
         marker_index = self.makefile_lines.index(r'^# url2pkg-marker')
         if marker_index == -1:
             raise Exception('ERROR: didn\'t find the url2pkg marker in the Makefile.')
@@ -789,6 +791,7 @@ class Adjuster:
         self.adjust_lines_python_module(lines, url)
 
         for varname in self.update_vars:
+            debug('update_var {0} {1}', varname, self.update_vars[varname])
             lines.set(varname, self.update_vars[varname])
 
         return lines
@@ -802,7 +805,7 @@ class Adjuster:
         self.wrksrc_files = glob.glob(f'{self.abs_wrksrc}/**', recursive=True)
         self.wrksrc_dirs = glob.glob(f'{self.abs_wrksrc}/**/', recursive=True)
 
-        self.makefile_lines = Lines.read_from('Makefile')
+        self.makefile_lines = Lines.read_from(config.pkgdir + '/Makefile')
 
         self.adjust_configure()
         self.adjust_cmake()
@@ -816,7 +819,7 @@ class Adjuster:
         self.adjust_po()
         self.adjust_use_languages()
 
-        self.generate_adjusted_Makefile_lines(url).write_to('Makefile')
+        self.generate_adjusted_Makefile_lines(url).write_to(config.pkgdir + '/Makefile')
 
         if self.regenerate_distinfo:
             bmake('distinfo')
@@ -830,8 +833,9 @@ def main():
 
     try:
         opts, args = getopt.getopt(sys.argv[1:], 'v', ['verbose'])
-        for opt in opts:
-            if opt in ('v', 'verbose'):
+        for (opt, optarg) in opts:
+            print('opt', repr(opt))
+            if opt in ('-v', '--verbose'):
                 config.verbose = True
     except getopt.GetoptError:
         sys.exit(f'usage: {sys.argv[0]} [-v|--verbose] [URL]')
diff --git a/pkgtools/url2pkg/files/url2pkg_test.py b/pkgtools/url2pkg/files/url2pkg_test.py
index aef7b538339..a71dcf15dd2 100644
--- a/pkgtools/url2pkg/files/url2pkg_test.py
+++ b/pkgtools/url2pkg/files/url2pkg_test.py
@@ -1,20 +1,47 @@
-# $NetBSD: url2pkg_test.py,v 1.1 2019/10/03 09:37:41 rillig Exp $
+# $NetBSD: url2pkg_test.py,v 1.2 2019/10/03 12:52:54 rillig Exp $
 
-import os
-from typing import List
 from url2pkg import *
 
 
-def setup_function(fn):
+def setup_function(_):
     config.pkgsrcdir = os.getenv('PKGSRCDIR')
     assert config.pkgsrcdir is not None
     os.chdir(config.pkgsrcdir + '/pkgtools/url2pkg')
 
 
-def vars(vars: List[Var]) -> List[str]:
+def str_vars(vars: List[Var]) -> List[str]:
     return list(map(lambda var: var.name + var.op + var.value, vars))
 
 
+def test_debug():
+    """ Just ensure that the debug calls do not crash. """
+    config.verbose = True
+    try:
+        debug('plain message')
+        debug('list {0}', [1, 2, 3])
+        debug('tuple {0}', (1, 2, 3))
+        debug('cwd {0} env {1} cmd {2}', 'directory', {'VAR': 'value'}, 'command')
+    finally:
+        config.verbose = False
+
+
+def test_aligned__empty():
+    assert aligned([]) == []
+
+
+def test_aligned__variables():
+    vars = [
+        Var('V', '=', 'value'),
+        Var('LONG_NAME', '=', 'value # comment')
+    ]
+    lines = [
+        'V=\t\tvalue',
+        'LONG_NAME=\tvalue # comment',
+        ''
+    ]
+    assert aligned(vars) == lines
+
+
 def test_Lines_add_vars__simple():
     lines = Lines()
 
@@ -94,7 +121,7 @@ def test_Lines_append__value_with_comment():
 def test_Lines_append__value_without_comment():
     lines = Lines("VARNAME+=\tvalue")
 
-    assert lines.append("VARNAME", "appended") == True
+    assert lines.append("VARNAME", "appended")
 
     assert lines.lines == ["VARNAME+=\tvalue appended"]
 
@@ -102,27 +129,102 @@ def test_Lines_append__value_without_comment():
 def test_Lines_set__previously_with_comment():
     lines = Lines("LICENSE=\t# TODO: see mk/license.mk")
 
-    lines.set("LICENSE", "${PERL5_LICENSE}")
+    assert lines.set("LICENSE", "${PERL5_LICENSE}")
 
     assert lines.lines == ["LICENSE=\t${PERL5_LICENSE}"]
 
 
+def test_Lines_unique_varassign__commented_out_no_value():
+    lines = Lines("#LICENSE=\t# TODO: see mk/license.mk")
+
+    assert len(lines.all_varassigns('LICENSE')) == 1
+
+
 def test_Lines_set__overwrite_comment_with_comment():
     lines = Lines("#LICENSE=\t# TODO: see mk/license.mk")
 
-    lines.set("#LICENSE", "${PERL5_LICENSE}")
+    assert len(lines.all_varassigns('LICENSE')) == 1
+    assert lines.set("LICENSE", "${PERL5_LICENSE}")
 
-    assert lines.lines == ["#LICENSE=\t${PERL5_LICENSE}"]
+    assert lines.lines == ["LICENSE=\t${PERL5_LICENSE}"]
+
+
+def test_Lines_set__overwrite_commented_with_comment():
+    lines = Lines("#LICENSE=\t# TODO: see mk/license.mk")
+
+    assert lines.set("LICENSE", "${PERL5_LICENSE}")
+
+    assert lines.lines == ["LICENSE=\t${PERL5_LICENSE}"]
 
 
 def test_Lines_set__not_found():
     lines = Lines("OLD_VAR=\told value # old comment")
 
-    lines.set("NEW_VAR", "new value")
+    assert not lines.set("NEW_VAR", "new value")
 
     assert lines.lines == ["OLD_VAR=\told value # old comment"]
 
 
+def test_Lines_remove__not_found():
+    lines = Lines('VAR=\tvalue')
+
+    assert not lines.remove('VARIABLE')
+
+    assert lines.lines == ['VAR=\tvalue']
+
+
+def test_Lines_remove__found():
+    lines = Lines('VAR=\tvalue')
+
+    assert lines.remove('VAR')
+
+    assert lines.lines == []
+
+
+def test_Lines_remove__found_several_times():
+    lines = Lines('VAR=\tvalue1', 'VAR=\tvalue2')
+
+    assert not lines.remove('VAR')
+
+    assert lines.lines == ['VAR=\tvalue1', 'VAR=\tvalue2']
+
+
+def test_Lines_remove_if__different_name():
+    lines = Lines('VAR=\tvalue')
+
+    assert not lines.remove_if('VARIABLE', 'value')
+
+    assert lines.lines == ['VAR=\tvalue']
+
+
+def test_Lines_remove_if__different_value():
+    lines = Lines('VAR=\tvalue')
+
+    assert not lines.remove_if('VAR', 'something')
+
+    assert lines.lines == ['VAR=\tvalue']
+
+
+def test_Lines_remove_if__found():
+    lines = Lines('VAR=\tvalue')
+
+    assert lines.remove_if('VAR', 'value')
+
+    assert lines.lines == []
+
+
+def test_Lines_remove_if__multiple():
+    lines = Lines('VAR=\tvalue', 'VAR=\tvalue')
+
+    assert lines.remove_if('VAR', 'value')
+
+    assert lines.lines == ['VAR=\tvalue']
+
+    assert lines.remove_if('VAR', 'value')
+
+    assert lines.lines == []
+
+
 def test_Lines_index():
     lines = Lines("1", "2", "345")
 
@@ -255,6 +357,7 @@ def test_Adjuster_read_dependencies():
         "TEST_DEPENDS\tpkglint",
         "A line that is not a dependency at all",
         "",
+        "var\tHOMEPAGE\thttps://homepage.example.org/"
         ""
     ]
     env = {"URL2PKG_DEPENDENCIES": '\n'.join(dep_lines)}
@@ -277,6 +380,9 @@ def test_Adjuster_read_dependencies():
     assert adjuster.test_depends == [
         "pkglint>=0:../../pkgtools/pkglint"
     ]
+    assert adjuster.update_vars == {
+        'HOMEPAGE': 'https://homepage.example.org/'
+    }
 
 
 def test_Adjuster_generate_adjusted_Makefile_lines():
@@ -309,10 +415,10 @@ def test_Adjuster_generate_adjusted_Makefile_lines__dependencies():
     )
 
     # some dependencies whose directory will not be found
-    adjuster.add_dependency("DEPENDS", "depends", ">=5.0", "../../devel/depends");
-    adjuster.add_dependency("TOOL_DEPENDS", "tool-depends", ">=6.0", "../../devel/tool-depends");
-    adjuster.add_dependency("BUILD_DEPENDS", "build-depends", ">=7.0", "../../devel/build-depends");
-    adjuster.add_dependency("TEST_DEPENDS", "test-depends", ">=8.0", "../../devel/test-depends");
+    adjuster.add_dependency("DEPENDS", "depends", ">=5.0", "../../devel/depends")
+    adjuster.add_dependency("TOOL_DEPENDS", "tool-depends", ">=6.0", "../../devel/tool-depends")
+    adjuster.add_dependency("BUILD_DEPENDS", "build-depends", ">=7.0", "../../devel/build-depends")
+    adjuster.add_dependency("TEST_DEPENDS", "test-depends", ">=8.0", "../../devel/test-depends")
     # some dependencies whose directory is explicitly given
     adjuster.depends.append("depends>=11.0:../../devel/depends")
     adjuster.build_depends.append("build-depends>=12.0:../../devel/build-depends")
@@ -336,6 +442,60 @@ def test_Adjuster_generate_adjusted_Makefile_lines__dependencies():
     ]
 
 
+def test_Adjuster_adjust_configure__not_found(tmp_path):
+    adjuster = Adjuster()
+    adjuster.abs_wrksrc = str(tmp_path)
+
+    adjuster.adjust_configure()
+
+    assert adjuster.build_vars == []
+
+
+def test_Adjuster_adjust_configure__GNU_configure(tmp_path):
+    adjuster = Adjuster()
+    adjuster.abs_wrksrc = str(tmp_path)
+    (tmp_path / 'configure').write_text('# Free Software Foundation\n')
+
+    adjuster.adjust_configure()
+
+    assert str_vars(adjuster.build_vars) == [
+        'GNU_CONFIGURE=yes',
+    ]
+
+
+def test_Adjuster_adjust_configure__other_configure(tmp_path):
+    adjuster = Adjuster()
+    adjuster.abs_wrksrc = str(tmp_path)
+    (tmp_path / 'configure').write_text('# A generic configure script\n')
+
+    adjuster.adjust_configure()
+
+    assert str_vars(adjuster.build_vars) == [
+        'HAS_CONFIGURE=yes',
+    ]
+
+
+def test_Adjuster_adjust_cargo__not_found(tmp_path):
+    adjuster = Adjuster()
+    adjuster.abs_wrksrc = str(tmp_path)
+
+    adjuster.adjust_cargo()
+
+    assert str_vars(adjuster.build_vars) == []
+
+
+def test_Adjuster_adjust_cargo__found(tmp_path):
+    adjuster = Adjuster()
+    adjuster.abs_wrksrc = str(tmp_path)
+    (tmp_path / 'Cargo.lock').write_text('"checksum cargo-package-name cargo-package-version 1234"')
+
+    adjuster.adjust_cargo()
+
+    assert str_vars(adjuster.build_vars) == [
+        'CARGO_CRATE_DEPENDS+=cargo-package-name-cargo-package-version',
+    ]
+
+
 def test_Adjuster_adjust_po__not_found():
     adjuster = Adjuster()
 
@@ -350,7 +510,7 @@ def test_Adjuster_adjust_po__found():
 
     adjuster.adjust_po()
 
-    assert vars(adjuster.build_vars) == [
+    assert str_vars(adjuster.build_vars) == [
         'USE_PKGLOCALEDIR=yes'
     ]
 
@@ -360,7 +520,7 @@ def test_Adjuster_adjust_use_languages__none():
 
     adjuster.adjust_use_languages()
 
-    assert vars(adjuster.build_vars) == [
+    assert str_vars(adjuster.build_vars) == [
         'USE_LANGUAGES=# none'
     ]
 
@@ -371,7 +531,7 @@ def test_Adjuster_adjust_use_languages__c():
 
     adjuster.adjust_use_languages()
 
-    assert vars(adjuster.build_vars) == []
+    assert str_vars(adjuster.build_vars) == []
 
 
 def test_Adjuster_adjust_use_languages__c_in_subdir():
@@ -380,7 +540,7 @@ def test_Adjuster_adjust_use_languages__c_in_subdir():
 
     adjuster.adjust_use_languages()
 
-    assert vars(adjuster.build_vars) == []
+    assert str_vars(adjuster.build_vars) == []
 
 
 def test_Adjuster_adjust_use_languages__cplusplus_in_subdir():
@@ -389,7 +549,7 @@ def test_Adjuster_adjust_use_languages__cplusplus_in_subdir():
 
     adjuster.adjust_use_languages()
 
-    assert vars(adjuster.build_vars) == [
+    assert str_vars(adjuster.build_vars) == [
         'USE_LANGUAGES=c++'
     ]
 
@@ -400,7 +560,7 @@ def test_Adjuster_adjust_use_languages__cplusplus_and_fortran():
 
     adjuster.adjust_use_languages()
 
-    assert vars(adjuster.build_vars) == [
+    assert str_vars(adjuster.build_vars) == [
         'USE_LANGUAGES=c++ fortran'
     ]
 
@@ -410,8 +570,8 @@ def test_Adjuster_adjust_pkg_config__none():
 
     adjuster.adjust_pkg_config()
 
-    assert vars(adjuster.build_vars) == []
-    assert vars(adjuster.extra_vars) == []
+    assert str_vars(adjuster.build_vars) == []
+    assert str_vars(adjuster.extra_vars) == []
 
 
 def test_Adjuster_adjust_pkg_config__pc_in():
@@ -420,8 +580,8 @@ def test_Adjuster_adjust_pkg_config__pc_in():
 
     adjuster.adjust_pkg_config()
 
-    assert vars(adjuster.build_vars) == ['USE_TOOLS+=pkg-config']
-    assert vars(adjuster.extra_vars) == ['PKGCONFIG_OVERRIDE+=library.pc.in']
+    assert str_vars(adjuster.build_vars) == ['USE_TOOLS+=pkg-config']
+    assert str_vars(adjuster.extra_vars) == ['PKGCONFIG_OVERRIDE+=library.pc.in']
 
 
 def test_Adjuster_adjust_pkg_config__uninstalled_pc_in():
@@ -430,8 +590,8 @@ def test_Adjuster_adjust_pkg_config__uninstalled_pc_in():
 
     adjuster.adjust_pkg_config()
 
-    assert vars(adjuster.build_vars) == []
-    assert vars(adjuster.extra_vars) == []
+    assert str_vars(adjuster.build_vars) == []
+    assert str_vars(adjuster.extra_vars) == []
 
 
 def test_Adjuster_adjust_pkg_config__both():
@@ -443,5 +603,103 @@ def test_Adjuster_adjust_pkg_config__both():
 
     adjuster.adjust_pkg_config()
 
-    assert vars(adjuster.build_vars) == ['USE_TOOLS+=pkg-config']
-    assert vars(adjuster.extra_vars) == ['PKGCONFIG_OVERRIDE+=library.pc.in']
+    assert str_vars(adjuster.build_vars) == ['USE_TOOLS+=pkg-config']
+    assert str_vars(adjuster.extra_vars) == ['PKGCONFIG_OVERRIDE+=library.pc.in']
+
+
+def test_Adjuster__adjust_homepage():
+    url = 'https://dummy.example.org/package-1.0.tar.gz'
+    adjuster = Adjuster()
+    adjuster.makefile_lines = generate_initial_package_Makefile_lines(url)
+    adjuster.update_vars['HOMEPAGE'] = 'https://example.org/'
+    adjuster.depends.append('dependency>=0:../../category/dependency')
+    adjuster.todos.append('Run pkglint')
+
+    lines = adjuster.generate_adjusted_Makefile_lines(url)
+
+    assert lines.lines == [
+        '# $' + 'NetBSD$',
+        '',
+        'DISTNAME=\tpackage-1.0',
+        'PKGNAME=\t${DISTNAME}',
+        'CATEGORIES=\tpkgtools',
+        'MASTER_SITES=\thttps://dummy.example.org/',
+        '',
+        'MAINTAINER=\tINSERT_YOUR_MAIL_ADDRESS_HERE',
+        'HOMEPAGE=\thttps://example.org/',
+        'COMMENT=\tTODO: Short description of the package',
+        '#LICENSE=\t# TODO: (see mk/license.mk)',
+        '',
+        '# TODO: Run pkglint',
+        '',
+        'DEPENDS+=\tdependency>=0:../../category/dependency',
+        '',
+        '.include "../../mk/bsd.pkg.mk"'
+    ]
+
+
+def test_Adjuster_determine_wrksrc__no_files(tmp_path):
+    adjuster = Adjuster()
+    adjuster.abs_wrkdir = str(tmp_path)
+
+    adjuster.determine_wrksrc()
+
+    assert adjuster.abs_wrksrc == adjuster.abs_wrkdir
+
+
+def test_Adjuster_determine_wrksrc__single_dir(tmp_path):
+    adjuster = Adjuster()
+    adjuster.abs_wrkdir = str(tmp_path)
+    (tmp_path / 'subdir').mkdir()
+
+    adjuster.determine_wrksrc()
+
+    assert adjuster.abs_wrksrc == adjuster.abs_wrkdir + '/subdir'
+
+
+def test_Adjuster_determine_wrksrc__several_dirs(tmp_path):
+    adjuster = Adjuster()
+    adjuster.abs_wrkdir = str(tmp_path)
+    (tmp_path / 'subdir1').mkdir()
+    (tmp_path / 'subdir2').mkdir()
+
+    adjuster.determine_wrksrc()
+
+    assert adjuster.abs_wrksrc == adjuster.abs_wrkdir
+    assert str_vars(adjuster.build_vars) == [
+        'WRKSRC=${WRKDIR} # More than one possibility -- please check manually.'
+    ]
+
+
+def test_Adjuster_adjust_package_from_extracted_distfiles__empty_wrkdir(tmp_path):
+    pkgdir = tmp_path
+    wrkdir = tmp_path / 'wrkdir'
+    fake = '''\
+#! /bin/sh
+case $* in
+("show-var VARNAME=WRKDIR") echo '%s' ;;
+(*) "unknown: $*" ;;
+esac
+''' % str(wrkdir)
+    config.pkgdir = str(tmp_path)
+    wrkdir.mkdir()
+    url = 'https://example.org/distfile-1.0.zip'
+    adjuster = Adjuster()
+    adjuster.abs_wrkdir = str(wrkdir)
+    (pkgdir / 'Makefile').write_text('# url2pkg-marker\n')
+    fake_path = (tmp_path / "fake")
+    fake_path.write_text(fake)
+    fake_path.chmod(0o755)
+
+    prev_make = config.make
+    config.make = fake_path
+    try:
+        adjuster.adjust_package_from_extracted_distfiles(url)
+    finally:
+        config.make = prev_make
+
+    assert adjuster.generate_adjusted_Makefile_lines(url).lines == [
+        'WRKSRC=\t\t${WRKDIR}',
+        'USE_LANGUAGES=\t# none',
+        '',
+    ]