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Diffstat (limited to 'find-deps.py')
-rwxr-xr-x | find-deps.py | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/find-deps.py b/find-deps.py new file mode 100755 index 000000000000..92095f934cfd --- /dev/null +++ b/find-deps.py @@ -0,0 +1,48 @@ +#!/usr/bin/env python3 + +""" +Usage: find-deps.py <binary> [<binary> ...] + +Finds (pacman/ALPM) dependencies for a binary or set of binaries based +on dynamically linked libraries. + +""" + +import sys +import os +import subprocess +import re + +def subprocess_get_lines(args, fail_okay=False): + try: + output = subprocess.check_output(args) + except subprocess.CalledProcessError as e: + if fail_okay: + output = e.output + else: + raise + return output.decode().splitlines() + +# Get the filenames of the libs we need +#del os.environ['LD_PRELOAD'] # otherwise fakeroot will interfere +ldd_output = subprocess_get_lines(['ldd'] + sys.argv[1:]) +regex = re.compile(r' => (.*) \(0x[0-9a-f]+\)$') +libs = set(match.group(1) for match in map(regex.search, ldd_output) if match) + +# Figure out which packages own them +deps = set(subprocess_get_lines( + ['pacman', '--query', '--owns', '--quiet'] + list(libs), + fail_okay=True +)) + +# Remove redundant dependencies +needed = set(deps) +for pkg in deps: + if pkg not in needed: + continue # this subtree has already been pruned + redundant = subprocess_get_lines( + ['pactree', '--unique', pkg] + )[1:] # first line is pkg itself + needed.difference_update(redundant) + +print(' '.join(sorted(needed))) |