From 318936366d5198123ae9ba0292538529f706dce8 Mon Sep 17 00:00:00 2001 From: Eelco Dolstra Date: Wed, 6 Apr 2022 12:41:18 +0200 Subject: Fix empty 'nix copy' error message This was caused by SubstitutionGoal not setting the errorMsg field in its BuildResult. We now get a more descriptive message than in 2.7.0, e.g. error: path '/nix/store/13mh...' is required, but there is no substituter that can build it instead of the misleading (since there was no build) error: build of '/nix/store/13mh...' failed Fixes #6295. --- src/libstore/build/substitution-goal.cc | 19 ++++++++++++++----- 1 file changed, 14 insertions(+), 5 deletions(-) (limited to 'src/libstore/build/substitution-goal.cc') diff --git a/src/libstore/build/substitution-goal.cc b/src/libstore/build/substitution-goal.cc index 31e6dbc9f..ca5218627 100644 --- a/src/libstore/build/substitution-goal.cc +++ b/src/libstore/build/substitution-goal.cc @@ -24,9 +24,16 @@ PathSubstitutionGoal::~PathSubstitutionGoal() } -void PathSubstitutionGoal::done(ExitCode result, BuildResult::Status status) +void PathSubstitutionGoal::done( + ExitCode result, + BuildResult::Status status, + std::optional errorMsg) { buildResult.status = status; + if (errorMsg) { + debug(*errorMsg); + buildResult.errorMsg = *errorMsg; + } amDone(result); } @@ -67,12 +74,14 @@ void PathSubstitutionGoal::tryNext() if (subs.size() == 0) { /* None left. Terminate this goal and let someone else deal with it. */ - debug("path '%s' is required, but there is no substituter that can build it", worker.store.printStorePath(storePath)); /* Hack: don't indicate failure if there were no substituters. In that case the calling derivation should just do a build. */ - done(substituterFailed ? ecFailed : ecNoSubstituters, BuildResult::NoSubstituters); + done( + substituterFailed ? ecFailed : ecNoSubstituters, + BuildResult::NoSubstituters, + fmt("path '%s' is required, but there is no substituter that can build it", worker.store.printStorePath(storePath))); if (substituterFailed) { worker.failedSubstitutions++; @@ -169,10 +178,10 @@ void PathSubstitutionGoal::referencesValid() trace("all references realised"); if (nrFailed > 0) { - debug("some references of path '%s' could not be realised", worker.store.printStorePath(storePath)); done( nrNoSubstituters > 0 || nrIncompleteClosure > 0 ? ecIncompleteClosure : ecFailed, - BuildResult::DependencyFailed); + BuildResult::DependencyFailed, + fmt("some references of path '%s' could not be realised", worker.store.printStorePath(storePath))); return; } -- cgit v1.2.3