Replace platforms.linux with platforms.darwin for expressions that compile on darwin too (too restrictive platforms)

pkgs/development/tools/misc/circleci-cli/default.nix

@@ -25,7 +25,7 @@ buildGoPackage rec {
       run jobs as if they were running on the hosted CirleCI application.
     '';
     maintainers = with maintainers; [ synthetica ];
-    platforms = platforms.linux;
+    platforms = platforms.unix;
     license = licenses.mit;
     homepage = https://circleci.com/;
   };

pkgs/development/tools/misc/loccount/default.nix

@@ -30,6 +30,6 @@ buildGoPackage rec {
     downloadPage="https://gitlab.com/esr/loccount/tree/master";
     license = licenses.bsd2;
     maintainers = with maintainers; [ calvertvl ];
-    platforms = platforms.linux;
+    platforms = platforms.unix;
   };
 }