_: {
  programs.nixvim = {
    plugins.cmp = {
      enable = true;

      settings = {
        completion = {
          completeopt = "menu,menuone,noinsert";
        };

        mapping = {
          "<C-n>" = "cmp.mapping.select_next_item()";
          "<C-p>" = "cmp.mapping.select_prev_item()";
          "<C-b>" = "cmp.mapping.scroll_docs(-4)";
          "<C-f>" = "cmp.mapping.scroll_docs(4)";
          "<C-y>" = "cmp.mapping.confirm { select = true }";
          "<C-Space>" = "cmp.mapping.complete {}";
          "<C-l>" = ''
            cmp.mapping(function()
              if luasnip.expand_or_locally_jumpable() then
                luasnip.expand_or_jump()
              end
            end, { 'i', 's' })
          '';
          "<C-h>" = ''
            cmp.mapping(function()
              if luasnip.locally_jumpable(-1) then
                luasnip.jump(-1)
              end
            end, { 'i', 's' })
          '';
        };

        snippet = {
          expand = ''
            function(args)
              require('luasnip').lsp_expand(args.body)
            end
          '';
        };

        sources = [
          {
            name = "luasnip";
          }
          {
            name = "nvim_lsp";
          }
          {
            name = "path";
          }
        ];
      };
    };
  };
}