diff options
Diffstat (limited to 'pym/_emerge/Package.py')
| -rw-r--r-- | pym/_emerge/Package.py | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/pym/_emerge/Package.py b/pym/_emerge/Package.py index 2c1a116ea..cebfd8281 100644 --- a/pym/_emerge/Package.py +++ b/pym/_emerge/Package.py @@ -3,6 +3,7 @@ from __future__ import unicode_literals +import functools import sys from itertools import chain import warnings @@ -82,6 +83,10 @@ class Package(Task): if eapi_attrs.iuse_effective: implicit_match = self.root_config.settings._iuse_effective_match + if self.built: + implicit_match = functools.partial( + self._built_iuse_effective_match, + implicit_match, frozenset(self._metadata['USE'].split())) else: implicit_match = self.root_config.settings._iuse_implicit_match usealiases = self.root_config.settings._use_manager.getUseAliases(self) @@ -109,6 +114,33 @@ class Package(Task): type_name=self.type_name) self._hash_value = hash(self._hash_key) + @staticmethod + def _built_iuse_effective_match(prof_effective_match, built_use, flag): + """ + For built packages, it is desirable for the built USE setting to be + independent of the profile's current IUSE_IMPLICIT state, since the + profile's IUSE_IMPLICT setting may have diverged. Therefore, any + member of the built USE setting is considered to be a valid member of + IUSE_EFFECTIVE. Note that the binary package may be remote, so it's + only possible to rely on metadata that is available in the remote + Packages file, and the IUSE_IMPLICIT header in the Packages file is + vulnerable to mutation (see bug 640318). + + This function is only used for EAPIs that support IUSE_EFFECTIVE, + since built USE settings for earlier EAPIs may contain a large + number of irrelevant flags. + + @param prof_effective_match: function to match IUSE_EFFECTIVE + values for the current profile + @type prof_effective_match: callable + @param built_use: built USE setting + @type built_use: frozenset + @return: True if flag is a valid USE value which may + be specified in USE dependencies, False otherwise. + @rtype: bool + """ + return flag in built_use or prof_effective_match(flag) + @property def eapi(self): return self._metadata["EAPI"] |