treewide: with stdenv.lib; in meta -> with lib;

Part of: https://github.com/NixOS/nixpkgs/issues/108938

meta = with stdenv.lib;

is a widely used pattern. We want to slowly remove
the `stdenv.lib` indirection and encourage people
to use `lib` directly. Thus let’s start with the meta
field.

This used a rewriting script to mostly automatically
replace all occurances of this pattern, and add the
`lib` argument to the package header if it doesn’t
exist yet.

The script in its current form is available at
https://cs.tvl.fyi/depot@2f807d7f141068d2d60676a89213eaa5353ca6e0/-/blob/users/Profpatsch/nixpkgs-rewriter/default.nix

pkgs/development/python-modules/py4j/default.nix

@@ -1,4 +1,4 @@
-{ buildPythonPackage, fetchPypi, stdenv }:
+{ buildPythonPackage, fetchPypi, lib, stdenv }:
 
 buildPythonPackage rec {
   pname = "py4j";
@@ -13,7 +13,7 @@ buildPythonPackage rec {
   # No tests in archive
   doCheck = false;
 
-  meta = with stdenv.lib; {
+  meta = with lib; {
     description = "Py4J enables Python programs running in a Python interpreter to dynamically access Java objects in a Java Virtual Machine. Methods are called as if the Java objects resided in the Python interpreter and Java collections can be accessed through standard Python collection methods. Py4J also enables Java programs to call back Python objects.";
     homepage = "https://www.py4j.org/";
     license = licenses.bsd3;