nixpkgs/pkgs/applications/editors/emacs/elisp-packages/nongnu-packages.nix

/*

# Updating

To update the list of packages from nongnu (ELPA),

1. Run `./update-nongnu`.
2. Check for evaluation errors:
     env NIXPKGS_ALLOW_BROKEN=1 nix-instantiate ../../../../.. -A emacs.pkgs.nongnuPackages
3. Run `git commit -m "nongnu-packages $(date -Idate)" -- nongnu-generated.nix`

*/

{ lib, buildPackages }:

self: let

  generateNongnu = lib.makeOverridable ({
    generated ? ./nongnu-generated.nix
  }: let

    imported = import generated {
      callPackage = pkgs: args: self.callPackage pkgs (args // {
        # Use custom elpa url fetcher with fallback/uncompress
        fetchurl = buildPackages.callPackage ./fetchelpa.nix { };
      });
    };

    super = imported;

    overrides = {
    };

  in super // overrides);

in generateNongnu { }