1 files changed, 12 insertions, 3 deletions
diff --git a/src/libstore/derivations.cc b/src/libstore/derivations.cc
index e9f35a6f1..fb1d06466 100644
--- a/src/libstore/derivations.cc
+++ b/src/libstore/derivations.cc
@@ -7,7 +7,7 @@
 
 namespace nix {
 
-std::optional<StorePath> DerivationOutput::pathOpt(const Store & store, std::string_view drvName) const
+std::optional<StorePath> DerivationOutput::pathOpt(const Store & store, std::string_view drvName, std::string_view outputName) const
 {
     return std::visit(overloaded {
         [](DerivationOutputInputAddressed doi) -> std::optional<StorePath> {
@@ -15,8 +15,7 @@ std::optional<StorePath> DerivationOutput::pathOpt(const Store & store, std::str
         },
         [&](DerivationOutputCAFixed dof) -> std::optional<StorePath> {
             return {
-                // FIXME if we intend to support multiple CA outputs.
-                dof.path(store, drvName, "out")
+                dof.path(store, drvName, outputName)
             };
         },
         [](DerivationOutputCAFloating dof) -> std::optional<StorePath> {
@@ -581,6 +580,16 @@ StringSet BasicDerivation::outputNames() const
     return names;
 }
 
+DerivationOutputsAndOptPaths BasicDerivation::outputsAndOptPaths(const Store & store) const {
+    DerivationOutputsAndOptPaths outsAndOptPaths;
+    for (auto output : outputs)
+        outsAndOptPaths.insert(std::make_pair(
+            output.first,
+            std::make_pair(output.second, output.second.pathOpt(store, name, output.first))
+            )
+        );
+    return outsAndOptPaths;
+}
 
 std::string_view BasicDerivation::nameFromPath(const StorePath & drvPath) {
     auto nameWithSuffix = drvPath.name();