treewide: clean up 'meta = with' pattern

This commit was created by a combination of scripts and tools:
- an ast-grep script to prefix things in meta with `lib.`,
- a modified nixf-diagnose / nixf combination to remove unused `with
lib;`, and
- regular nixfmt.

Co-authored-by: Wolfgang Walther <walther@technowledgy.de>

pkgs/development/ocaml-modules/fileutils/default.nix

@@ -29,10 +29,10 @@ buildDunePackage rec {
   ];
   doCheck = lib.versionAtLeast ocaml.version "4.08";
 
-  meta = with lib; {
+  meta = {
     description = "OCaml API to manipulate real files (POSIX like) and filenames";
     homepage = "https://github.com/gildor478/ocaml-fileutils";
-    license = licenses.lgpl21Plus;
-    maintainers = with maintainers; [ vbgl ];
+    license = lib.licenses.lgpl21Plus;
+    maintainers = with lib.maintainers; [ vbgl ];
   };
 }