base16-shell-preview: refactor

this shouldn't create any rebuilds

pkgs/by-name/ba/base16-shell-preview/package.nix

@@ -4,17 +4,14 @@
   fetchPypi,
 }:
 
-let
+python3Packages.buildPythonApplication (finalAttrs: {
   pname = "base16-shell-preview";
   version = "1.1.0";
-in
-python3Packages.buildPythonApplication {
-  inherit pname version;
   pyproject = true;
 
   src = fetchPypi {
-    inherit version;
-    pname = "${lib.replaceStrings [ "-" ] [ "_" ] pname}";
+    inherit (finalAttrs) version;
+    pname = "${lib.replaceStrings [ "-" ] [ "_" ] finalAttrs.pname}";
     hash = "sha256-UWS1weiccSGqBU8grPAUKkuXb7qs5wliHVaPgdW4KtI=";
   };
 
@@ -33,4 +30,4 @@ python3Packages.buildPythonApplication {
     license = lib.licenses.mit;
     maintainers = [ ];
   };
-}
+})