stdenv.lib -> lib

pkgs/firedrake/exodus.nix

@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
   patches = ./exodus-include.patch;
   sourceRoot = "${name}/exodus";
 
-  meta = with stdenv.lib; {
+  meta = with lib; {
     homepage = "http://gsjaardema.github.io/seacas";
     description = "A model developed to store and retrieve data for finite element analyses.";
     license = licenses.bsd3;