diff options
Diffstat (limited to 'pym/_emerge/depgraph.py')
| -rw-r--r-- | pym/_emerge/depgraph.py | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/pym/_emerge/depgraph.py b/pym/_emerge/depgraph.py index 7db5ae3f3..73b81e1d1 100644 --- a/pym/_emerge/depgraph.py +++ b/pym/_emerge/depgraph.py @@ -4203,6 +4203,69 @@ class depgraph(object): retlist.reverse() return retlist + def _implicit_libc_deps(self, mergelist, graph): + """ + Create implicit dependencies on libc, in order to ensure that libc + is installed as early as possible (see bug #303567). If the merge + list contains both a new-style virtual and an old-style PROVIDE + virtual, the new-style virtual is used. + """ + implicit_libc_roots = set([self._frozen_config._running_root.root]) + libc_set = InternalPackageSet([portage.const.LIBC_PACKAGE_ATOM]) + norm_libc_pkgs = {} + virt_libc_pkgs = {} + for pkg in mergelist: + if not isinstance(pkg, Package): + # a satisfied blocker + continue + if pkg.installed: + continue + if pkg.root in implicit_libc_roots and \ + pkg.operation == 'merge': + if libc_set.findAtomForPackage(pkg): + if pkg.category == 'virtual': + d = virt_libc_pkgs + else: + d = norm_libc_pkgs + if pkg.root in d: + raise AssertionError( + "found 2 libc matches: %s and %s" % \ + (d[pkg.root], pkg)) + d[pkg.root] = pkg + + # Prefer new-style virtuals over old-style PROVIDE virtuals. + libc_pkg_map = norm_libc_pkgs.copy() + libc_pkg_map.update(virt_libc_pkgs) + + # Only add a dep when the version changes. + for libc_pkg in list(libc_pkg_map.values()): + if libc_pkg.root_config.trees['vartree'].dbapi.cpv_exists( + libc_pkg.cpv): + del libc_pkg_map[pkg.root] + + if not libc_pkg_map: + return + + libc_pkgs = set(libc_pkg_map.values()) + earlier_libc_pkgs = set() + + for pkg in mergelist: + if not isinstance(pkg, Package): + # a satisfied blocker + continue + if pkg.installed: + continue + if pkg.root in implicit_libc_roots and \ + pkg.operation == 'merge': + if pkg in libc_pkgs: + earlier_libc_pkgs.add(pkg) + else: + my_libc = libc_pkg_map.get(pkg.root) + if my_libc is not None and \ + my_libc in earlier_libc_pkgs: + graph.add(my_libc, pkg, + priority=DepPriority(buildtime=True)) + def schedulerGraph(self): """ The scheduler graph is identical to the normal one except that @@ -4220,6 +4283,8 @@ class depgraph(object): # NOTE: altlist initializes self._dynamic_config._scheduler_graph mergelist = self.altlist() + self._implicit_libc_deps(mergelist, + self._dynamic_config._scheduler_graph) self.break_refs(mergelist) self.break_refs(self._dynamic_config._scheduler_graph.order) |