anchor.diff:    # https://github.com/jagajaga/my_configs/blob/master/.nixpkgs/common.nix.
     setPrio = prio: drv: lib.addMetaAttrs { priority = prio; } drv;
   
  -  l_emacs = pkgs.emacsWithPackages (with pkgs.emacsPackagesNg; [
  -    vterm
  -  ]);
  +  l_emacs = pkgs.emacsWithPackages (with pkgs.emacsPackagesNg; [ vterm ]);
   
     l_set_basic = setPrio "10" (buildEnv {
       name = "l-set-basic";
       ignoreCollisions = true;
  -    paths = [
  -      l_set_base
  -      l_set_dev
  -      l_set_haskell
  -    ];
  +    paths = [ l_set_base l_set_dev l_set_haskell ];
     });
   
     # Meant for headless backup boxes. Subset of things in l-set-base and
  
positive.code:       python39Packages.flake8
        noweb
        rustup
        # Some node stuff.
        nodejs
        wasm-pack
  
        # Containerization.
        docker
  
negative.code:       tig
        clang
        elixir
        elixir_ls
        gcc
        go
        gocode
        golint
        gomodifytags
        gore
        gotests
        gotools
        html-tidy
        inotify-tools
        ispell
        nodePackages.js-beautify
        nodePackages.stylelint
        nixfmt
        pipenv
        binutils
        gnumake
        python39
  