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be180bcf93
Minimize the number of manually installed packages in images by marking dependencies of metapackages as automatically installed. Squashed commits: * minimize-manual.py: Followup with some cleanup, correct permissions * fixup: Do not assume current directory * Reorganize minimal-manual file location.
53 lines
1.4 KiB
Python
Executable File
53 lines
1.4 KiB
Python
Executable File
#!/usr/bin/python3
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"""Minimize the number of manually installed packages in the image.
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Finds all manually installed meta packages, and marks their dependencies
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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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return (pkg.is_installed and
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not pkg.is_auto_installed and
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(pkg.section == "metapackages" or
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pkg.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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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:
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pkg.mark_auto()
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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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workset.add(ver.package)
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seen.add(pkg)
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cache.commit()
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if __name__ == '__main__':
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main()
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