diff options
| -rw-r--r-- | pym/_emerge/__init__.py | 27 |
1 files changed, 24 insertions, 3 deletions
diff --git a/pym/_emerge/__init__.py b/pym/_emerge/__init__.py index 0042a6072..e89f75ff6 100644 --- a/pym/_emerge/__init__.py +++ b/pym/_emerge/__init__.py @@ -3489,6 +3489,9 @@ class depgraph(object): node.operation != "uninstall"] # sys-apps/portage needs special treatment if ROOT="/" + portage_python_dep = ">=dev-lang/python-2.4" + portage_unslotted_deps = frozenset( + ["app-shells/bash", "sys-apps/portage"]) portage_node = self.mydbapi["/"].match_pkgs("sys-apps/portage") if portage_node: portage_node = portage_node[0] @@ -3677,10 +3680,28 @@ class depgraph(object): continue if "/" == task.root: - # Never uninstall sys-apps/portage - # except through replacement. - if "sys-apps/portage" == task.cp: + # Never uninstall sys-apps/portage or it's essential + # dependencies, except through replacement. + if task.cp in portage_unslotted_deps: continue + + # Don't uninstall python if it appears to be + # the only suitable one installed. + if task.cp == "dev-lang/python" and \ + portage.match_from_list( + portage_python_dep, [task.cpv_slot]): + vardb = root_config.trees["vartree"].dbapi + other_version = None + for pkg in vardb.match_pkgs(portage_python_dep): + if pkg.cpv == task.cpv and \ + pkg.metadata["COUNTER"] == \ + task.metadata["COUNTER"]: + continue + other_version = pkg + break + if other_version is None: + continue + # For packages in the system set, don't take # any chances. If the conflict can't be resolved # by a normal replacement operation then abort. |