diff options
Diffstat (limited to 'src/libstore/build/local-derivation-goal.cc')
| -rw-r--r-- | src/libstore/build/local-derivation-goal.cc | 24 |
1 files changed, 17 insertions, 7 deletions
diff --git a/src/libstore/build/local-derivation-goal.cc b/src/libstore/build/local-derivation-goal.cc index 1e3c4109d..dadda4de2 100644 --- a/src/libstore/build/local-derivation-goal.cc +++ b/src/libstore/build/local-derivation-goal.cc @@ -436,13 +436,23 @@ std::set<int> LocalDerivationGoal::startBuilder() killSandbox(false); /* Right platform? */ - if (!parsedDrv->canBuildLocally(worker.store)) - throw Error("a '%s' with features {%s} is required to build '%s', but I am a '%s' with features {%s}", - drv->platform, - concatStringsSep(", ", parsedDrv->getRequiredSystemFeatures()), - worker.store.printStorePath(drvPath), - settings.thisSystem, - concatStringsSep<StringSet>(", ", worker.store.systemFeatures)); + if (!parsedDrv->canBuildLocally(worker.store)) { + HintFmt addendum{""}; + if (settings.useSubstitutes && !parsedDrv->substitutesAllowed()) { + addendum = HintFmt("\n\nHint: the failing derivation has %s set to %s, forcing it to be built rather than substituted.\n" + "Passing %s to force substitution may resolve this failure if the path is available in a substituter.", + "allowSubstitutes", "false", "--always-allow-substitutes"); + } + throw Error({ + .msg = HintFmt("a '%s' with features {%s} is required to build '%s', but I am a '%s' with features {%s}%s", + drv->platform, + concatStringsSep(", ", parsedDrv->getRequiredSystemFeatures()), + worker.store.printStorePath(drvPath), + settings.thisSystem, + concatStringsSep<StringSet>(", ", worker.store.systemFeatures), + Uncolored(addendum)) + }); + } /* Create a temporary directory where the build will take place. */ |