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-rw-r--r--src/nix-env/main.cc4
1 files changed, 3 insertions, 1 deletions
diff --git a/src/nix-env/main.cc b/src/nix-env/main.cc
index 6e4ba61e5..71c22d1a5 100644
--- a/src/nix-env/main.cc
+++ b/src/nix-env/main.cc
@@ -197,7 +197,9 @@ static void createUserEnv(EvalState & state, const UserEnvElems & elems,
PathSet drvsToBuild;
for (UserEnvElems::const_iterator i = elems.begin();
i != elems.end(); ++i)
- if (i->second.drvPath != "")
+ /* Call to `isDerivation' is for compatibility with Nix <= 0.7
+ user environments. */
+ if (i->second.drvPath != "" && isDerivation(i->second.drvPath))
drvsToBuild.insert(i->second.drvPath);
debug(format("building user environment dependencies"));