Rewrite ‘with pkgs.lib’ -> ‘with lib’

Using pkgs.lib on the spine of module evaluation is problematic
because the pkgs argument depends on the result of module
evaluation. To prevent an infinite recursion, pkgs and some of the
modules are evaluated twice, which is inefficient. Using ‘with lib’
prevents this problem.

nixos/modules/programs/bash/bash.nix

@@ -1,9 +1,9 @@
 # This module defines global configuration for the Bash shell, in
 # particular /etc/bashrc and /etc/profile.
 
-{ config, pkgs, ... }:
+{ config, lib, pkgs, ... }:
 
-with pkgs.lib;
+with lib;
 
 let
 

nixos/modules/programs/bash/command-not-found.nix

@@ -3,9 +3,9 @@
 # SQLite database that maps program names to Nix package names (e.g.,
 # "pdflatex" is mapped to "tetex").
 
-{ config, pkgs, ... }:
+{ config, lib, pkgs, ... }:
 
-with pkgs.lib;
+with lib;
 
 let