diff options
| -rw-r--r-- | src/nix/develop.cc | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/nix/develop.cc b/src/nix/develop.cc index 9d07a7a85..0ee533e85 100644 --- a/src/nix/develop.cc +++ b/src/nix/develop.cc @@ -313,7 +313,7 @@ struct Common : InstallableCommand, MixProfile buildEnvironment.toBash(out, ignoreVars); for (auto & var : savedVars) - out << fmt("%s=\"$%s:$nix_saved_%s\"\n", var, var, var); + out << fmt("%s=\"$%s${nix_saved_%s:+:$nix_saved_%s}\"\n", var, var, var, var); out << "export NIX_BUILD_TOP=\"$(mktemp -d -t nix-shell.XXXXXX)\"\n"; for (auto & i : {"TMP", "TMPDIR", "TEMP", "TEMPDIR"}) |