{
  sources ? import ../sources.nix,
  pkgs ? import sources.nixpkgs {},
  ...
}: let
  inherit (pkgs) lib;

  mkHaskellPackage = {
    src,
    name,
    apply ? lib.id,
  }: let
    drv = pkgs.haskellPackages.callCabal2nix name src {};
  in
    lib.pipe drv [
      apply
      pkgs.haskell.lib.dontHaddock
      pkgs.haskell.lib.justStaticExecutables
    ];

  infuse-lib = import sources.infuse {
    inherit lib;
    sugars = infuse-lib.v1.default-sugars;
  };

  infuse = lib.flip infuse-lib.v1.infuse;

  iosevka-pin = import sources.pin-iosevka {};
  mkNerdFont = iosevka-pin.callPackage ../lib/mkNerdFont.nix {};
in rec {
  # fonts
  altiosevka = iosevka-pin.callPackage ./altiosevka {};
  altiosevka-nerd-font-mono = mkNerdFont {
    font = altiosevka;
    extraArgs = [
      "--name {/.}-NFM"
      "--use-single-width-glyphs"
    ];
  };

  audio-lint = pkgs.rustPlatform.buildRustPackage rec {
    pname = "audio-lint";
    version = lib.substring 0 8 sources.audio-lint.rev;
    src = sources.audio-lint;
    cargoLock.lockFile = "${src}/Cargo.lock";
  };
}