Iwakura/modules/emacs/overlay.nix

final: prev:
let
  myEmacs = prev.emacs;
  emacsWithPackages = (prev.emacsPackagesGen myEmacs).emacsWithPackages;
in {
  emacs = emacsWithPackages (epkgs:
    (with epkgs.melpaStablePackages; [
      magit
      evil
      nix-mode
      rainbow-delimiters
      paredit
      evil-surround
      evil-textobj-anyblock
    ]) ++ (with epkgs.melpaPackages; [
      racket-mode
    ]) ++ (with epkgs.elpaPackages; [
    ]) ++ (with final; [
    ]));
}