mirror of
https://git.launchpad.net/livecd-rootfs
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d36578f6bb
Imported using git-ubuntu import.
Changelog parent: 4de1045012a988a3fd716afac1c3e4fe1cc5ee46
New changelog entries:
* Minimize the number of manually installed packages in images by marking
dependencies of metapackages as automatically installed.
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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