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-rw-r--r--nixpkgs/pkgs/development/em-modules/generic/default.nix5
1 files changed, 3 insertions, 2 deletions
diff --git a/nixpkgs/pkgs/development/em-modules/generic/default.nix b/nixpkgs/pkgs/development/em-modules/generic/default.nix
index f03e6e42739a..d1e7ac882d79 100644
--- a/nixpkgs/pkgs/development/em-modules/generic/default.nix
+++ b/nixpkgs/pkgs/development/em-modules/generic/default.nix
@@ -7,10 +7,11 @@
 , meta ? {}, ... } @ args:
 
 pkgs.stdenv.mkDerivation (
-  args // 
+  args //
   {
 
-  name = "emscripten-${args.name}";
+  pname = "emscripten-${args.pname or (builtins.parseDrvName args.name).name}";
+  version = args.version or (builtins.parseDrvName args.name).version;
   buildInputs = [ emscripten python ] ++ buildInputs;
   nativeBuildInputs = [ emscripten python ] ++ nativeBuildInputs;