nixos-config/overlays/default.nix

{ inputs, packages, ... }: rec {
  all = [
    scripts
    sway
    themes
    new-packages
    patches
    variables
    lib_extended
  ];

  scripts = (import ../scripts);

  sway = (import ./sway.nix);

  themes = (final: prev: {
    material-wifi-icons = final.stdenv.mkDerivation rec {
      name = "material-wifi-icons";
      src = inputs.material-wifi-icons;
      installPhase = ''
        install -D material-wifi.ttf $out/share/fonts/${name}
      '';
    };
    papirus_red = (final.papirus-icon-theme.override { color = "red"; });
    orchis_theme_compact = (final.orchis-theme.override {
      border-radius = 0;
      tweaks = [ "compact" "solid" ];
    });
    nerdfonts_fira_hack = (final.nerdfonts.override { fonts = [ "FiraCode" "Hack" ]; });
  });

  new-packages = (final: prev: packages // {
    dhist = inputs.dhist.packages.${prev.system}.dhist;
    demoji = inputs.demoji.packages.${prev.system}.default;
    tlauncher = inputs.tlauncher.packages.${prev.system}.tlauncher;
    maildir-notify-daemon = inputs.maildir-notify-daemon.packages.${prev.system}.default;
    wl-crosshair = inputs.wl-crosshair.packages.${prev.system}.default;
  });

  patches = (final: prev: {
    bemenu = prev.bemenu.overrideAttrs (o: {
      postPatch = ''
        substituteInPlace lib/renderers/wayland/window.c \
          --replace ZWLR_LAYER_SHELL_V1_LAYER_TOP ZWLR_LAYER_SHELL_V1_LAYER_OVERLAY
      '';
    });
    sway-unwrapped = prev.sway-unwrapped.overrideAttrs (old: {
      patches = old.patches
        ++ [ ../patches/sway/fix-hide_cursor-clearing-focus.patch ];
    });
    mangohud = prev.mangohud.overrideAttrs (o: {
      patches = o.patches ++ [
        (prev.fetchpatch {
          url = "https://github.com/flightlessmango/MangoHud/commit/95141de657e02577f1d3fab0ca12122bfb68bc56.patch";
          hash = "sha256-a2tESliGBkfF7uYQn8TDgeFt07A9FOioI4VcTT7DC7A=";
        })
      ];
    });
  });

  variables = (final: prev: {
    uservars = import ../user/variables.nix;
  });

  lib_extended = (final: prev: {
    lib = prev.lib // rec {
      # Utility function
      # Input: [{v1=1;} {v2=2;}]
      # Output: {v1=1;v2=2;}
      mergeAttrsSet = prev.lib.foldAttrs (n: _: n) { };

      # Easily translate imperative templating code
      # Input: [ 1 2 ] (num: { "v${num}" = num; })
      # Output: {v1=1;v2=2;}
      forEachMerge = list: func: mergeAttrsSet (prev.lib.forEach list func);
    };
  });
}