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-rw-r--r--pym/_emerge/resolver/slot_collision.py25
1 files changed, 17 insertions, 8 deletions
diff --git a/pym/_emerge/resolver/slot_collision.py b/pym/_emerge/resolver/slot_collision.py
index c51b9f734..0f4c6a53f 100644
--- a/pym/_emerge/resolver/slot_collision.py
+++ b/pym/_emerge/resolver/slot_collision.py
@@ -231,14 +231,23 @@ class slot_conflict_handler(object):
collision_reasons[("version", sub_type)] = atoms
elif not atom_set.findAtomForPackage(other_pkg, \
modified_use=_pkg_use_enabled(other_pkg)):
- #Use conditionals not met.
- violated_atom = atom.violated_conditionals(_pkg_use_enabled(other_pkg), \
- other_pkg.iuse.is_valid_flag)
- for flag in violated_atom.use.enabled.union(violated_atom.use.disabled):
- atoms = collision_reasons.get(("use", flag), set())
- atoms.add((ppkg, atom, other_pkg))
- collision_reasons[("use", flag)] = atoms
- num_all_specific_atoms += 1
+ missing_iuse = other_pkg.iuse.get_missing_iuse(
+ atom.unevaluated_atom.use.required)
+ if missing_iuse:
+ for flag in missing_iuse:
+ atoms = collision_reasons.get(("use", flag), set())
+ atoms.add((ppkg, atom, other_pkg))
+ collision_reasons[("use", flag)] = atoms
+ num_all_specific_atoms += 1
+ else:
+ #Use conditionals not met.
+ violated_atom = atom.violated_conditionals(_pkg_use_enabled(other_pkg), \
+ other_pkg.iuse.is_valid_flag)
+ for flag in violated_atom.use.enabled.union(violated_atom.use.disabled):
+ atoms = collision_reasons.get(("use", flag), set())
+ atoms.add((ppkg, atom, other_pkg))
+ collision_reasons[("use", flag)] = atoms
+ num_all_specific_atoms += 1
msg.append(" pulled in by\n")