treewide: fixDarwinDylibNames only on Darwin

pkgs/development/libraries/libargon2/default.nix

@@ -11,7 +11,9 @@ stdenv.mkDerivation rec {
     sha256 = "0p4ry9dn0mi9js0byijxdyiwx74p1nr8zj7wjpd1fjgqva4sk23i";
   };
 
-  nativeBuildInputs = [ fixDarwinDylibNames ];
+  nativeBuildInputs = lib.optionals stdenv.isDarwin [
+    fixDarwinDylibNames
+  ];
 
   patches = [
     # TODO: remove when https://github.com/P-H-C/phc-winner-argon2/pull/277 is merged + released

pkgs/development/libraries/talloc/default.nix

@@ -21,11 +21,12 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [
     pkg-config
-    fixDarwinDylibNames
     python3
     wafHook
     docbook-xsl-nons
     docbook_xml_dtd_42
+  ] ++ lib.optionals stdenv.isDarwin [
+    fixDarwinDylibNames
   ];
 
   buildInputs = [

pkgs/development/lua-modules/overrides.nix

@@ -301,7 +301,7 @@ with prev;
           sed -i 's,${"\${.*INSTALL_INC_DIR}"},${placeholder "out"}/include/luv,' CMakeLists.txt
         '';
 
-        nativeBuildInputs = [ pkgs.fixDarwinDylibNames ];
+        nativeBuildInputs = pkgs.lib.optionals pkgs.stdenv.isDarwin [ pkgs.fixDarwinDylibNames ];
 
         # Fixup linking libluv.dylib, for some reason it's not linked against lua correctly.
         NIX_LDFLAGS = pkgs.lib.optionalString pkgs.stdenv.isDarwin