diff options
Diffstat (limited to 'pym')
| -rw-r--r-- | pym/_emerge/depgraph.py | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/pym/_emerge/depgraph.py b/pym/_emerge/depgraph.py index 5ab42f68e..846d3ece5 100644 --- a/pym/_emerge/depgraph.py +++ b/pym/_emerge/depgraph.py @@ -924,6 +924,19 @@ class depgraph(object): # behavior if this gets triggered somehow. backtrack_data = fallback_data + if len(backtrack_data) > 1: + # NOTE: Generally, we prefer to mask the higher + # version since this solves common cases in which a + # lower version is needed so that all dependencies + # will be satisfied (bug #337178). However, if + # existing_node happens to be installed then we + # mask that since this is a common case that is + # triggered when --update is not enabled. + if existing_node.installed: + pass + elif pkg > existing_node: + backtrack_data.reverse() + to_be_masked = backtrack_data[-1][0] self._dynamic_config._backtrack_infos["slot conflict"] = backtrack_data |