diff options
| -rw-r--r-- | pym/_emerge/Scheduler.py | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/pym/_emerge/Scheduler.py b/pym/_emerge/Scheduler.py index c6af547f8..d5c152f15 100644 --- a/pym/_emerge/Scheduler.py +++ b/pym/_emerge/Scheduler.py @@ -721,6 +721,63 @@ class Scheduler(PollScheduler): return 1 return os.EX_OK + def _check_required_use(self): + # Make sure all constraints expressed in REQUIRED_USE are satisfied + + failures = 0 + shown_verifying_msg = False + for x in self._mergelist: + if not isinstance(x, Package): + continue + + if x.operation == "uninstall": + continue + + if x.metadata["EAPI"] in ("0", "1", "2", "3"): + continue + + if not x.metadata["REQUIRED_USE"]: + continue + + if not shown_verifying_msg: + shown_verifying_msg = True + self._status_msg("Verifying use flag constraints") + + required_use = x.metadata["REQUIRED_USE"] + use = x.metadata["USE"].split() + iuse = x.metadata["IUSE"].split() + + try: + sat, unsat = portage.dep.check_required_use(required_use, use, iuse) + except portage.exception.InvalidRequiredUseString as e: + failures += 1 + portage.writemsg("!!! Invalid REQUIRED_USE specified by " + \ + "'%s': %s\n" % (x.cpv, str(e)), noiselevel=-1) + del e + continue + + if unsat: + failures += 1 + if sat: + #not all constraints are violated, display the them all to not annoy + #the user with another violated constraint after he fixed the first one + portage.writemsg( + "!!! Use flag constraints for '%s' not met.\n" % x.cpv + \ + "!!! violated constraint(s): '%s'\n" % unsat + \ + "!!! all constraint(s): '%s'\n" % required_use, noiselevel=-1) + else: + portage.writemsg( + "!!! Use flag constraints for '%s' not met.\n" % x.cpv + \ + "!!! constraint(s): '%s'\n" % required_use, noiselevel=-1) + if failures: + portage.writemsg("\n") + portage.writemsg("Explanation: || ( a b c ): at least one of 'a', 'b' or 'c' must be enabled\n") + portage.writemsg("Explanation: ^^ ( a b c ): exactly one of 'a', 'b' or 'c' must be enabled\n") + portage.writemsg("Explanation: a? ( b ): b needs to be enabled if a is enabled\n") + portage.writemsg("Explanation: '!'-prefix reverses the required state\n") + return 1 + return os.EX_OK + def _add_prefetchers(self): if not self._parallel_fetch: @@ -990,6 +1047,10 @@ class Scheduler(PollScheduler): if rval != os.EX_OK and not keep_going: return rval + rval = self._check_required_use() + if rval != os.EX_OK: + return rval + rval = self._run_pkg_pretend() if rval != os.EX_OK: return rval |