1 files changed, 25 insertions, 6 deletions

diff --git a/src/libstore/local-store.cc b/src/libstore/local-store.cc
index e96091aae..027efc7c9 100644
--- a/src/libstore/local-store.cc
+++ b/src/libstore/local-store.cc
@@ -578,13 +578,32 @@ void LocalStore::checkDerivationOutputs(const StorePath & drvPath, const Derivat
                 envHasRightPath(path, i.first);
             },
             [&](DerivationOutputCAFloating _) {
-                throw UnimplementedError("floating CA output derivations are not yet implemented");
+                /* Nothing to check */
             },
         }, i.second.output);
     }
 }
 
 
+void LocalStore::linkDeriverToPath(const StorePath & deriver, const string & outputName, const StorePath & output)
+{
+    auto state(_state.lock());
+    return linkDeriverToPath(*state, queryValidPathId(*state, deriver), outputName, output);
+}
+
+void LocalStore::linkDeriverToPath(State & state, uint64_t deriver, const string & outputName, const StorePath & output)
+{
+    retrySQLite<void>([&]() {
+        state.stmtAddDerivationOutput.use()
+            (deriver)
+            (outputName)
+            (printStorePath(output))
+            .exec();
+    });
+
+}
+
+
 uint64_t LocalStore::addValidPath(State & state,
     const ValidPathInfo & info, bool checkOutputs)
 {
@@ -619,11 +638,11 @@ uint64_t LocalStore::addValidPath(State & state,
         if (checkOutputs) checkDerivationOutputs(info.path, drv);
 
         for (auto & i : drv.outputs) {
-            state.stmtAddDerivationOutput.use()
-                (id)
-                (i.first)
-                (printStorePath(i.second.path(*this, drv.name)))
-                .exec();
+            /* Floating CA derivations have indeterminate output paths until
+               they are built, so don't register anything in that case */
+            auto optPath = i.second.pathOpt(*this, drv.name);
+            if (optPath)
+                linkDeriverToPath(state, id, i.first, *optPath);
         }
     }