nix-config/home/modules/cli/nixvim/plugins/cmp.nix

{
  programs.nixvim.plugins.cmp = {
    enable = true;
    autoEnableSources = true;
    settings = {
      sources = [
        { name = "nvim_lsp"; }
        { name = "path"; }
        { name = "buffer"; }
      ];
      mapping = {
        "<Tab>" = ''
          cmp.mapping(function(fallback)
            if cmp.visible() then
              cmp.select_next_item()
            else
              fallback()
            end
          end, { "i", "s" })
        '';
        "<S-Tab>" = ''
          cmp.mapping(function(fallback)
            if cmp.visible() then
              cmp.select_prev_item()
            else
              fallback()
            end
          end, { "i", "s" })
        '';
        "<C-Space>" = "cmp.mapping.complete()";
        "<CR>" = "cmp.mapping.confirm({ select = true })";
      };
    };
  };
}