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2a68f1312a
instead of using python-apt that potentially starts talking to the build system's dbus causing various problems. LP: #1835406
64 lines
2.3 KiB
Python
Executable File
64 lines
2.3 KiB
Python
Executable File
#!/usr/bin/python3
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"""List the packages which could be automatically installed without becoming autoremovable
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Finds all manually installed meta packages, and prints their dependencies
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which could be marked as automatically installed.
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"""
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import sys
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import apt
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def is_root(pkg):
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"""Check if the package is a root package (manually inst. meta)"""
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section = pkg.candidate.section if pkg.candidate else ""
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return (pkg.is_installed and
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not pkg.is_auto_installed and
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(section == "metapackages" or
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section.endswith("/metapackages")))
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def main():
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"""Main function"""
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cache = apt.Cache(rootdir=sys.argv[1] if len(sys.argv) > 1 else None)
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roots = set(pkg for pkg in cache if is_root(pkg))
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workset = set(roots)
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seen = set()
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ubiquity_depends = set()
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with cache.actiongroup():
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while True:
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print("Iteration", file=sys.stderr)
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to_proc = workset - seen
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if not to_proc:
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break
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for pkg in sorted(to_proc):
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print(" Visiting", pkg, file=sys.stderr)
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if pkg not in roots and pkg not in ubiquity_depends:
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if not pkg.is_auto_installed:
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print(pkg.name)
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for dep in (pkg.installed.dependencies +
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pkg.installed.recommends):
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for bdep in dep.or_dependencies:
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for ver in bdep.target_versions:
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if ver.package.is_installed:
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if pkg.name == "ubiquity":
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ubiquity_depends.add(ver.package)
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if pkg.name != "ubiquity":
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# Reprocess this package again, as we did not mark it when we visited it from ubiquity
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try:
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ubiquity_depends.remove(ver.package)
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# This will raise the KeyError here if ubiquity did not depend on it
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seen.remove(ver.package)
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except KeyError:
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pass
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workset.add(ver.package)
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seen.add(pkg)
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if __name__ == '__main__':
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main()
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