nixos/pkgs/doom-emacs/package.nix

{
  inputs,
  system,
  editor-runtime,
  symlinkJoin,
  makeWrapper,
}:
let
  inherit (inputs) nixpkgs emacs-overlay nix-doom;
  pkgs = import nixpkgs {
    localSystem = { inherit system; };
    overlays = [
      emacs-overlay.overlays.default
      nix-doom.overlays.default
    ];
  };
  emacs = pkgs.emacs-igc-pgtk;
  doom-emacs = pkgs.doomEmacs {
    doomDir = ./config;
    doomLocalDir = "~/.local/share/nix-doom";
    emacs = emacs;
    extraPackages =
      ep: with ep; [
        melpaPackages.telega
        melpaPackages.nixos-options
        melpaPackages.scroll-on-jump
        melpaPackages.org-modern
      ];
    extraBinPackages =
      (with pkgs; [
        git
        ripgrep
        fd
        imagemagick
      ])
      ++ [ editor-runtime ];
  };
in
symlinkJoin {
  name = "doom-emacs";
  paths = [ doom-emacs ];
  inherit (doom-emacs) meta;
  buildInputs = [
    makeWrapper
  ];
  env = {
    ORIGINAL_EMACS = toString emacs;
  };
  postBuild = ''
    wrapProgram $out/bin/doom-emacs \
      --unset EMACSNATIVELOADPATH \
      --unset EMACSLOADPATH \
      --inherit-argv0

    mkdir -p $out/share/applications
    cp ''${ORIGINAL_EMACS}/share/applications/emacs.desktop \
      $out/share/applications/doom-emacs.desktop
    cp -rt $out/share ''${ORIGINAL_EMACS}/share/icons
    substituteInPlace $out/share/applications/doom-emacs.desktop \
      --replace 'Name=Emacs' 'Name=Doom Emacs' \
      --replace 'Exec=emacs' "Exec=$out/bin/doom-emacs" \
      --replace 'StartupWMClass=Emacs' "StartupWMClass=Doom Emacs"
  '';
}