dhallPackages.buildDhallUrl: small formatting fixes

Co-authored-by: Sandro <sandro.jaeckel@gmail.com>

pkgs/development/interpreters/dhall/build-dhall-url.nix

@@ -79,12 +79,10 @@ in
   runCommand name { } (''
     set -eu
 
-    mkdir -p ${cacheDhall}
+    mkdir -p ${cacheDhall} $out/${cacheDhall}
 
     export XDG_CACHE_HOME=$PWD/${cache}
 
-    mkdir -p $out/${cacheDhall}
-
     SHA_HASH="${dhall-hash}"
 
     HASH_FILE="''${SHA_HASH/sha256:/1220}"

pkgs/test/dhall/default.nix

@@ -3,4 +3,3 @@
 lib.recurseIntoAttrs {
   buildDhallUrl = callPackage ./buildDhallUrl { };
 }
-