neovim.nix

# .config/nixpkgs/overlays/neovim.nix
self: super: {
  neovim-unwrapped = (super.neovim-unwrapped.override { lua = self.luajit; }).overrideAttrs(oldAttrs: {
      cmakeFlags = oldAttrs.cmakeFlags ++ [ "-DMIN_LOG_LEVEL=0" ];

      version = "master";
      src = builtins.fetchGit {
        url = https://github.com/neovim/neovim.git;
      };

      nativeBuildInputs = oldAttrs.nativeBuildInputs ++ [
        # self.pkgs.valgrind

        # testing between both
        self.pkgs.ccls
        self.pkgs.clang-tools  # for clangd
      ];

      buildInputs = oldAttrs.buildInputs ++ [
        self.pkgs.icu  # for treesitter unicode/ptypes.h
        self.pkgs.utf8proc
      ];

      # export NVIM_PROG
      # https://github.com/neovim/neovim/blob/master/test/README.md#configuration
      shellHook = oldAttrs.shellHook + ''
        export NVIM_PYTHON_LOG_LEVEL=DEBUG
        export NVIM_LOG_FILE=/tmp/log
        # export NVIM_PYTHON_LOG_FILE=/tmp/log
        export VALGRIND_LOG="$PWD/valgrind.log"
        export NVIM_TEST_PRINT_I=1
        export NVIM_TEST_MAIN_CDEFS=1
        echo "To run tests:"
        echo "VALGRIND=1 TEST_FILE=test/functional/core/job_spec.lua TEST_TAG=env make functionaltest"
      '';
  });

  neovim = super.neovim.override {
    vimAlias = true;
    withPython = true;
    configure = {
      packages.myVimPackage = with super.vimPlugins; {
        start = [
	  "rust-lang/rust.vim"
	  "romainl/Apprentice"
	  "NLKNguyen/papercolor-theme"
	  "junegunn/seoul256.vim"
	  vim-signify
	  vim-fugitive
	  ultisnips
	  "lifepillar/vim-mucomplete"
	];

	opt = [];
      };

      customRC = ''
	colorscheme PaperColor
      '';
    };
  };
}