(pkgs: super: {
  # https://github.com/NixOS/nixpkgs/pull/145738
  # tree = super.tree.overrideAttrs (o: {
  #   preConfigure = o.preConfigure + ''
  #     makeFlags+=("CC=$CC")
  #   '';
  #   makeFlags = pkgs.lib.filter (x: x != "CC=$CC") o.makeFlags;
  # });
  notmuch = super.notmuch.overrideAttrs (o: {
    doCheck = false;
  });
})