From 4bbd80c5366711b8f1b5ad108ba22206d3bee783 Mon Sep 17 00:00:00 2001 From: John Ericson Date: Fri, 12 Feb 2021 21:50:50 +0000 Subject: [PATCH] Throw error for derivation goal with bogus wanted output --- src/libstore/build/derivation-goal.cc | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/src/libstore/build/derivation-goal.cc b/src/libstore/build/derivation-goal.cc index c29237f5c..530f8829a 100644 --- a/src/libstore/build/derivation-goal.cc +++ b/src/libstore/build/derivation-goal.cc @@ -1243,9 +1243,12 @@ OutputPathMap DerivationGoal::queryDerivationOutputMap() void DerivationGoal::checkPathValidity() { bool checkHash = buildMode == bmRepair; + auto wantedOutputsLeft = wantedOutputs; for (auto & i : queryPartialDerivationOutputMap()) { InitialOutput & info = initialOutputs.at(i.first); info.wanted = wantOutput(i.first, wantedOutputs); + if (info.wanted) + wantedOutputsLeft.erase(i.first); if (i.second) { auto outputPath = *i.second; info.known = { @@ -1267,6 +1270,11 @@ void DerivationGoal::checkPathValidity() } } } + // If we requested all the outputs via the empty set, we are always fine. + // If we requested specific elements, the loop above removes all the valid + // ones, so any that are left must be invalid. + if (!wantedOutputsLeft.empty()) + throw UsageError("some wanted outputs are not provided by the derivation: %s", concatStringsSep(", ", wantedOutputsLeft)); }