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/tools/misc/birdfont/default.nix

@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, pkgconfig, python3, xmlbird,
+{ lib, stdenv, fetchurl, pkgconfig, python3, xmlbird,
 cairo, gdk-pixbuf, libgee, glib, gtk3, webkitgtk, libnotify, sqlite, vala_0_44,
 gobject-introspection, gsettings-desktop-schemas, wrapGAppsHook }:
 
@@ -25,7 +25,7 @@ stdenv.mkDerivation rec {
 
   installPhase = "./install.py";
 
-  meta = with stdenv.lib; {
+  meta = with lib; {
     description = "Font editor which can generate fonts in TTF, EOT, SVG and BIRDFONT format";
     homepage = "https://birdfont.org";
     license = licenses.gpl3;

pkgs/tools/misc/birdfont/xmlbird.nix

@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, python3, pkgconfig, vala, glib, gobject-introspection }:
+{ lib, stdenv, fetchurl, python3, pkgconfig, vala, glib, gobject-introspection }:
 
 stdenv.mkDerivation rec {
   pname = "xmlbird";
@@ -23,7 +23,7 @@ stdenv.mkDerivation rec {
 
   installPhase = "./install.py";
 
-  meta = with stdenv.lib; {
+  meta = with lib; {
     description = "XML parser for Vala and C programs";
     homepage = "https://birdfont.org/xmlbird.php";
     license = licenses.lgpl3;