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Fixed a bug in the conflicts checker.

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This commit is contained in:
Fabio Tranchitella 2006-08-07 17:59:32 +00:00
parent 18c7435c4f
commit fd15f44b0c
1 changed files with 19 additions and 7 deletions
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26
britney.py
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@ -1688,7 +1688,7 @@ class Britney:
# can't be solved, so return False.
def handle_conflict(pkg, source, system, conflicts):
# reached the top of the tree
if not system[source][1]:
if not system[source][1][0]:
return False
# remove its conflicts
unregister_conflicts(source, conflicts)
@ -1727,7 +1727,7 @@ class Britney:
# if it is a virtual package
providers = []
if pkg in binaries[1]:
if pkg_from and pkg in binaries[1]:
providers = binaries[1][pkg]
# it is both real and virtual, so the providers are alternatives
if binary_u:
@ -1752,6 +1752,16 @@ class Britney:
# if the package doesn't exist, return False
if not binary_u: return False
# it is broken, but we have providers
if pkg in broken:
for p in providers:
# try to install the providers skipping excluded packages,
# which we already tried but do not work
if p in excluded: continue
elif satisfy(p, [a for a in providers if a != p], pkg_from):
return True
return False
# install the package into the system, recording which package required it
if type(pkg_from) != list:
pkg_from = [pkg_from]
@ -1760,13 +1770,17 @@ class Britney:
# register provided packages
if binary_u['provides']:
for p in binary_u['provides']:
system[p] = ([], [pkg])
if p in system:
if system[p][1][0] == None: continue
system[p][1].append(pkg)
else:
system[p] = ([], [pkg])
# check the conflicts
if pkg in conflicts:
for name, version, op, conflicting in conflicts[pkg]:
if conflicting not in binary_u['provides'] and ( \
op == '' and version == '' or check_depends(binary_u['version'], op, version)):
if conflicting in binary_u['provides'] and system[conflicting][1] == [pkg]: continue
if op == '' and version == '' or check_depends(binary_u['version'], op, version):
# if conflict is found, check if it can be solved removing
# already-installed packages without broking the system; if
# this is not possible, give up and return False
@ -1816,8 +1830,6 @@ class Britney:
alternatives = map(operator.itemgetter(0), block)
valid = False
for name, version, op in block:
# if the package is broken, don't try it at all
if name in broken: continue
# otherwise, if it is already installed or it is installable, the block is satisfied
if name in system or satisfy(name, [a for a in alternatives if a != name], pkg):
valid = True