mpich: handle empty withPm correctly

NixOS · Jan 12, 2024 · 9bf0a82 · 9bf0a82
1 parent 48025cb
commit 9bf0a82
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/pkgs/development/libraries/mpich/default.nix b/pkgs/development/libraries/mpich/default.nix
@@ -17,7 +17,7 @@ let
     withPm
   else
     builtins.filter builtins.isString (builtins.split ":" withPm);
-  withPm' = builtins.concatStringsSep ":" processManagers;
+  withPm' = if processManagers != [ ] then builtins.concatStringsSep ":" processManagers else "no";
 in
 
 assert (ch4backend.pname == "ucx" || ch4backend.pname == "libfabric");