Fix floating CA tests

We will sometimes try to query the outputs of derivations we can't
resolve. That's fine; it just means we don't know what those outputs are
yet.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/libstore/derivations.cc b/src/libstore/derivations.cc
index ce57a5bb0..695265860 100644
--- a/src/libstore/derivations.cc
+++ b/src/libstore/derivations.cc
@@ -671,7 +671,7 @@ static void rewriteDerivation(Store & store, BasicDerivation & drv, const String
 
 Sync<DrvPathResolutions> drvPathResolutions;
 
-BasicDerivation Derivation::resolve(Store & store) {
+std::optional<BasicDerivation> Derivation::tryResolve(Store & store) {
     BasicDerivation resolved { *this };
 
     // Input paths that we'll want to rewrite in the derivation
@@ -683,7 +683,7 @@ BasicDerivation Derivation::resolve(Store & store) {
         for (auto & outputName : input.second) {
             auto actualPathOpt = inputDrvOutputs.at(outputName);
             if (!actualPathOpt)
-                throw Error("input drv '%s' wasn't yet built", store.printStorePath(input.first));
+                return std::nullopt;
             auto actualPath = *actualPathOpt;
             inputRewrites.emplace(
                 downstreamPlaceholder(store, input.first, outputName),