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common/xbps-cycles.py: Add cache option

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allows to modify deps and see if cycle is resolved
This commit is contained in:
Piotr Wójcik 2021-06-30 20:38:44 +02:00 • committed by Piotr
parent 4fc5144f8e
commit 287624675c
2 changed files with 26 additions and 4 deletions
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26
common/scripts/xbps-cycles.py
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@ -11,7 +11,7 @@ from argparse import ArgumentParser
import networkx as nx
def enum_depends(pkg, xbpsdir):
def enum_depends(pkg, xbpsdir, cachedir):
'''
Return a pair (pkg, [dependencies]), where [dependencies] is the list
of dependencies for the given package pkg. The argument xbpsdir should
@ -20,18 +20,32 @@ def enum_depends(pkg, xbpsdir):
<xbpsdir>/xbps-src show-build-deps <pkg>
unless <cachedir>/deps-<pkg> file exist, in that case it is read.
If the return code of this call nonzero, a message will be printed but
the package will treated as if it has no dependencies.
'''
if cachedir:
cachepath = os.path.join(cachedir, 'deps-' + pkg)
try:
with open(cachepath) as f:
return pkg, [l.strip() for l in f]
except FileNotFoundError:
pass
cmd = [os.path.join(xbpsdir, 'xbps-src'), 'show-build-deps', pkg]
try:
deps = subprocess.check_output(cmd)
except subprocess.CalledProcessError as err:
print('xbps-src failed to find dependencies for package', pkg)
print('xbps-src failed to find dependencies for package', pkg)
deps = [ ]
else:
deps = [d for d in deps.decode('utf-8').split('\n') if d]
if cachedir:
with open(cachepath, 'w') as f:
for d in deps:
print(d, file=f)
return pkg, deps
@ -83,6 +97,8 @@ if __name__ == '__main__':
parser = ArgumentParser(description='Cycle detector for xbps-src')
parser.add_argument('-j', '--jobs', default=None,
type=int, help='Number of parallel jobs')
parser.add_argument('-c', '--cachedir',
default=None, help='''Directory to use as cache for xbps-src show-build-deps. Directory must exist already.''')
parser.add_argument('-d', '--directory',
default=None, help='Path to void-packages repo')
@ -92,11 +108,13 @@ if __name__ == '__main__':
try: args.directory = os.environ['XBPS_DISTDIR']
except KeyError: args.directory = '.'
cachedir = args.cachedir
pool = multiprocessing.Pool(processes = args.jobs)
pattern = os.path.join(args.directory, 'srcpkgs', '*')
depmap = dict(pool.starmap(enum_depends,
((os.path.basename(g), args.directory)
depmap = dict(pool.starmap(enum_depends,
((os.path.basename(g), args.directory, cachedir)
for g in glob.iglob(pattern))))
find_cycles(depmap, args.directory)