diff options
Diffstat (limited to 'lib/customisation.nix')
| -rw-r--r-- | lib/customisation.nix | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/lib/customisation.nix b/lib/customisation.nix index ac234e3b8c6..dc5dd769197 100644 --- a/lib/customisation.nix +++ b/lib/customisation.nix @@ -131,7 +131,12 @@ rec { origArgs = auto // args; pkgs = f origArgs; mkAttrOverridable = name: _: makeOverridable (newArgs: (f newArgs).${name}) origArgs; - in lib.mapAttrs mkAttrOverridable pkgs; + in + if lib.isDerivation pkgs then throw + ("function `callPackages` was called on a *single* derivation " + + ''"${pkgs.name or "<unknown-name>"}";'' + + " did you mean to use `callPackage` instead?") + else lib.mapAttrs mkAttrOverridable pkgs; /* Add attributes to each output of a derivation without changing |