wrapNeovimUnstable: do not generate empty init.vim file (#404061)

    [ "$result" = 0 ]

  '';

  # Generate a neovim wrapper with only a init.lua and no init.vim file

  nvim_with_only_init_lua = wrapNeovim2 "-only-lua-init-file" {

    luaRcContent = "-- some text";

  };

  # check that we do not generate an init.vim file if it is not needed

  no_init_vim_file = runTest nvim_with_only_init_lua ''

    ${nvim_with_only_init_lua}/bin/nvim -i NONE -e --headless -c 'if len(getscriptinfo({"name":"init.vim"})) == 0 | quit | else | cquit | fi'

    # This does now work because the lua file is sourced via loadfile() which

    # does not add the file name to :scriptnames and getscriptinfo().

    #${nvim_with_only_init_lua}/bin/nvim -i NONE -e --headless -c 'if len(getscriptinfo({"name":"init.lua"})) == 1 | quit | else | cquit | fi'

    assertFileRegex ${nvim_with_only_init_lua}/bin/nvim 'VIMINIT=.*init.lua'

  '';

  # check that the vim-doc hook correctly generates the tag

  # we know for a fact packer has a doc folder

  checkForTags = vimPlugins.packer-nvim.overrideAttrs (oldAttrs: {

          ''

            ${luaRcContent}

          ''

          + lib.optionalString (neovimRcContent' != null) ''

          + lib.optionalString (neovimRcContent' != "") ''

            vim.cmd.source "${writeText "init.vim" neovimRcContent'}"

          ''

          + lib.concatStringsSep "\n" luaPluginRC;