Add detailed error mesage for coerceTo{String,Path}

1 files changed, 2 insertions, 2 deletions

diff --git a/src/nix-env/user-env.cc b/src/nix-env/user-env.cc
index af4f350ff..b30ccc7f6 100644
--- a/src/nix-env/user-env.cc
+++ b/src/nix-env/user-env.cc
@@ -132,9 +132,9 @@ bool createUserEnv(EvalState & state, DrvInfos & elems,
     state.forceValue(topLevel, [&]() { return topLevel.determinePos(noPos); });
     PathSet context;
     Attr & aDrvPath(*topLevel.attrs->find(state.sDrvPath));
-    auto topLevelDrv = state.coerceToStorePath(*aDrvPath.pos, *aDrvPath.value, context);
+    auto topLevelDrv = state.coerceToStorePath(*aDrvPath.pos, *aDrvPath.value, context, "");
     Attr & aOutPath(*topLevel.attrs->find(state.sOutPath));
-    auto topLevelOut = state.coerceToStorePath(*aOutPath.pos, *aOutPath.value, context);
+    auto topLevelOut = state.coerceToStorePath(*aOutPath.pos, *aOutPath.value, context, "");
 
     /* Realise the resulting store expression. */
     debug("building user environment");