{ lib, pkgs, ... }:
let
  makebinds = attrs: lib.pipe attrs [
    (attr: builtins.mapAttrs (_: keys: (builtins.map (key: "<${key}>") keys)) attr)
    (attr: (builtins.mapAttrs (_: keys: (builtins.concatStringsSep " " keys)) attr))
    (attr: (lib.attrsets.mapAttrsToList (sum: keys: ''<Multi_key> ${keys} : "${sum}"'') attr))
    (attr: builtins.concatStringsSep "\n" attr)
  ];

  binds = lib.concatStringsSep "\n" [
    # ''include "%L"''
    (makebinds {
      "ě" = [ "e" "j" ];

      "ѣ" = [ "Cyrillic_ie" "Cyrillic_ie" ];
      "Ѣ" = [ "Cyrillic_IE" ];
      "ѳ" = [ "Cyrillic_ef" ];
      "ѵ" = [ "Cyrillic_i" ];
      "ґ" = [ "Cyrillic_ghe" ];
      "є" = [ "Cyrillic_ie" "Cyrillic_e" ];

      "љ" = [ "Cyrillic_el" "Cyrillic_el" ];
      "њ" = [ "Cyrillic_en" "Cyrillic_en" ];

      "ѧ" = [ "Cyrillic_e" "Cyrillic_en" ];
      "ѩ" = [ "Cyrillic_ie" "Cyrillic_en" ];
      "ѫ" = [ "Cyrillic_o" "Cyrillic_en" ];
      "ѭ" = [ "Cyrillic_io" "Cyrillic_en" ];
      
      "¨" = [ "Colon" ];

      "α" = [ "g" "a" ];
      "β" = [ "g" "b" ];
      "γ" = [ "g" "g" ];
      "λ" = [ "g" "l" ];
    })
  ];

in {
  environment.variables.XCOMPOSEFILE = ".XCompose";
  hm = {
    home.file.".XCompose" = {
      enable = true;
      target = ".XCompose";
      recursive = false;
      text = binds;
    };

    programs.niri.settings.input.keyboard.xkb.file = toString (pkgs.writeText "compose.xkb" binds);
  };
}