rure: fix darwin dylib names

This hasn't been an issue on x86_64, but running it anyways shouldn't
hurt. aarch64-darwin's trouble could be due to codesigning? Besides that
there don't seem to be many differences between the actual derivations.

This also unbreaks the test suite of regex-rure.

pkgs/development/haskell-modules/configuration-darwin.nix

···
   # https://github.com/NixOS/nixpkgs/issues/149692
   Agda = removeConfigureFlag "-foptimise-heavily" super.Agda;
 
-  # regex-rure's test suite fails with a dylib not loaded error due to some
-  # rpath issue.
-  regex-rure = dontDistribute (markBroken super.regex-rure);
-  jacinda = dontDistribute super.jacinda;
-
 } // lib.optionalAttrs pkgs.stdenv.isx86_64 {  # x86_64-darwin
 
   # tests appear to be failing to link or something:

pkgs/development/libraries/rure/default.nix

···
 , stdenv
 , rustPlatform
 , fetchCrate
+, fixDarwinDylibNames
 }:
 
 let
···
   postInstall = ''
     install -Dm644 include/rure.h -t "$dev/include"
   '';
+
+  nativeBuildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
+    fixDarwinDylibNames
+  ];
 
   passthru.updateScript = ./update.sh;