{ inputs, pkgs, ... }: {
  imports = [
    inputs.nixvim.homeManagerModules.nixvim
  ];

  programs.nixvim = {
    enable = true;
    enableMan = true; # install man pages for nixvim options

    clipboard.register = "unnamedplus"; # use system clipboard instead of internal registers

    # TODO: nixvim: gruvbox-material
    colorschemes = {
      gruvbox = {
        enable = true;
        contrastDark = "medium";
        transparentBg = "true";
      };
    };

    options = {
      # # Lua reference:
      # vim.o behaves like :set
      # vim.go behaves like :setglobal
      # vim.bo for buffer-scoped options
      # vim.wo for window-scoped options (can be double indexed)

      #
      # ========= General Appearance =========
      #
      hidden = true; # Makes vim act like all other editors, buffers can exist in the background without being in a window. http://items.sjbach.com/319/configuring-vim-right
      number = true; # show line numbers
      relativenumber = true; # show relative linenumbers
      laststatus = 0; # Display status line always
      history = 1000; # Store lots of :cmdline history
      showcmd = true; # Show incomplete cmds down the bottom
      showmode = true; # Show current mode down the bottom
      autoread = true; # Reload files changed outside vim
      lazyredraw = true; # Redraw only when needed
      showmatch = true; # highlight matching braces
      ruler = true; # show current line and column
      visualbell = true; # No sounds

      listchars = "trail:·"; # Display tabs and trailing spaces visually

      wrap = false; # Don't wrap lines
      linebreak = true; # Wrap lines at convenient points

      # ========= Font =========
      guifont = "NotoSansMono:h9"; # fontname:fontsize

      # ========= Cursor =========
      guicursor = "n-v-c-sm:block,i-ci-ve:ver25,r-cr-o:hor20,n-v-i:blinkon0";

      # ========= Redirect Temp Files =========
      # backup
      backupdir = "$HOME/.vim/backup//,/tmp//,.";
      writebackup = false;
      # swap
      directory = "$HOME/.vim/swap//,/tmp//,.";

      # ================ Indentation ======================
      autoindent = true;
      cindent = true; # automatically indent braces
      smartindent = true;
      smarttab = true;
      shiftwidth = 4;
      softtabstop = 4;
      tabstop = 4;
      expandtab = true;

      # ================ Folds ============================
      foldmethod = "indent"; # fold based on indent
      foldnestmax = 3; # deepest fold is 3 levels
      foldenable = false; # don't fold by default

      # ================ Completion =======================
      wildmode = "list:longest";
      wildmenu = true; # enable ctrl-n and ctrl-p to scroll thru matches

      # stuff to ignore when tab completing
      wildignore = "*.o,*.obj,*~,vim/backups,sass-cache,DS_Store,vendor/rails/**,vendor/cache/**,*.gem,log/**,tmp/**,*.png,*.jpg,*.gif";

      # ================ Scrolling ========================
      scrolloff = 4; # Start scrolling when we're 4 lines away from margins
      sidescrolloff = 15;
      sidescroll = 1;

      # ================ Searching ========================
      incsearch = true;
      hlsearch = true;
      ignorecase = true;
      smartcase = true;

      # ================ Movement ========================
      backspace = "indent,eol,start"; # allow backspace in insert mode
    };

    #
    # ========= UI Plugins =========
    #

    # Display colors for when # FFFFFF codes are detected in buffer text.
    plugins.nvim-colorizer = {
      enable = true;
      fileTypes = [ "*" ];
    };

    # TODO: nixvim: additional commands for alpha
    # Greeter
    plugins.alpha = {
      enable = true;
      iconsEnabled = true; # installs nvim-web-devicons.
      layout = [
        {
          type = "padding";
          val = 2;
        }
        {
          type = "text";
          val = [
            "                 ______"
            "                /     /\\"
            "               /     /##\\"
            "              /     /####\\"
            "             /     /######\\"
            "            /     /########\\"
            "           /     /##########\\"
            "          /     /#####/\\#####\\"
            "         /     /#####/++\\#####\\"
            "        /     /#####/++++\\#####\\"
            "       /     /#####/\\+++++\\#####\\"
            "      /     /#####/  \\+++++\\#####\\"
            "     /     /#####/    \\+++++\\#####\\"
            "    /     /#####/      \\+++++\\#####\\"
            "   /     /#####/        \\+++++\\#####\\"
            "  /     /#####/__________\\+++++\\#####\\"
            " /                        \\+++++\\#####\\"
            "/__________________________\\+++++\\####/"
            "\\+++++++++++++++++++++++++++++++++\\##/"
            " \\+++++++++++++++++++++++++++++++++\\/"
            "  ``````````````````````````````````"
            ""
          ];
        }
        {
          type = "padding";
          val = 2;
        }
        {
          type = "group";
          val = [
            {
              command = "<CMD>ene <CR>";
              desc = "  New file";
              shortcut = "<Leader>cn";
            }
            {
              command = ":qa<CR>";
              desc = "  Quit Neovim";
              shortcut = ":q";
            }
          ];
        }
        {
          type = "padding";
          val = 2;
        }
        {
          opts = {
            hl = "Keyword";
            position = "center";
          };
          type = "text";
          val = "The way out is through.";
        }
      ];
    };
    # TODO: nixvim switch to lightline and lightline-bufferline
    plugins.airline = {
      enable = true;
      powerline = true;
      extensions = {
        # TODO: nixvim: Figure out tabline extension stuff in nixvim
        # TODO: nixvim: Possibly use bufferline or lightline-bufferline instead
        # """" Tabline settings
        #
        # " show buffer numbers in the tab line for easier deleting
        # " use :echo airline#extensions#tabline#get() to see what is actually set
        # let g:airline#extensions#tabline#show_tab_nr = 1
        # let g:airline#extensions#tabline#tabs_label = 't'
        # let g:airline#extensions#tabline#buffers_label = 'b'
        # let g:airline#extensions#tabline#buffer_nr_show = 1
        #
        # " Disable showing buffer numbers for splits when using tabs. This gets quite
        # " annoying if there's quite a few splits open.
        # let g:airline#extensions#tabline#show_splits = 0
        #
        # " Title adjustments
        # "airline_symbols Show tab numbers in the tab title
        # let g:airline#extensions#tabline#tab_nr_type = 1
        #
        # " https://github.com/vim-airline/vim-airline/issues/476
        #
        # " show the buffer index
        # "let g:airline#extensions#tabline#buffer_idx_mode = 1
        # "
        # " https://github.com/vim-airline/vim-airline/wiki/Configuration-Examples-and-Snippets#a-different-example-add-the-window-number-in-front-of-the-mode
        # function! WindowNumber(...)
        #     let builder = a:1
        #     let context = a:2
        #     call builder.add_section('airline_b', '%{tabpagewinnr(tabpagenr())}')
        #     return 0
        # endfunction
      };
    };
    plugins.fidget = {
      enable = true;
      text.spinner = "triangle";
    };

    # ========= Undo history ========
    # TODO: nixvim: set up    alos, map to <leader>u
    # plugins.undotree = {};


    #
    # ========= File Search =========
    #
    plugins.telescope = {
      # https://github.com/nvim-telescope/telescope.nvim
      enable = true;
      extensions.fzy-native.enable = true;
    };

    # ========= File Nav ===========
    # TODO: nixvim set this one up
    # plugins.harpoon = {};

    #
    # ========== Dev Tools =========
    #
    plugins.fugitive.enable = true; # vim-fugitive
    # plugins.surround.enable = true; # vim-surround

    # Load Plugins that aren't provided as modules by nixvim
    extraPlugins = builtins.attrValues {
      inherit (pkgs.vimPlugins)
        # linting and fixing (config in extraConfigVim)
        # https://github.com/dense-analysis/ale
        # TODO: nixvim: revamp setup to lua
        # there is also a lightline-ale  plugin/extension for lightline when you get around to it
        # by default ALE completion is disabled. need to determine if it's worth enabling and ditching youcompleteme ... it likely is for simplicity!
        ale

        vim-illuminate# Highlight similar words as are under the cursor
        vim-numbertoggle# Use relative number on focused buffer only
        range-highlight-nvim# Highlight range as specified in commandline e.g. :10,15
        vimade# Dim unfocused buffers
        vim-twiggy# Fugitive plugin to add branch control
        vimwiki# Vim Wiki
        YouCompleteMe# Code completion engine

        # TODO: nixvim: make sure this is working and not conflicting with YCM
        # supertab # Use <tab> for insert completion needs - https://github.com/ervandew/supertab/

        # Keep vim-devicons as last entry
        vim-devicons;
    };

    # ========= Mapleader =========
    globals.mapleader = ";";

    #
    # ========= Key binds =========
    #
    # MODES Key:
    #    "n" Normal mode
    #    "i" Insert mode
    #    "v" Visual and Select mode
    #    "s" Select mode
    #    "t" Terminal mode
    #    ""  Normal, visual, select and operator-pending mode
    #    "x" Visual mode only, without select
    #    "o" Operator-pending mode
    #    "!" Insert and command-line mode
    #    "l" Insert, command-line and lang-arg mode
    #    "c" Command-line mode
    keymaps = [
      # TODO: nixvim: Test sudo save
      # {
      #   # sudo save
      #   mode= ["c"];
      #   key = "w!!";
      #   action = "<cmd>w !sudo tee > /dev/null %<CR>";
      # }
      {
        # edit vimrc
        mode = [ "" ];
        key = "<Leader>ve";
        action = "<cmd>e ~/.config/.vimrc<CR>";
        options = { noremap = true; };
      }
      {
        # reload vimrc
        mode = [ "n" ];
        key = "<Leader>vr";
        action = "<cmd>so $MYVIMRC<CR>";
        options = { noremap = true; };
      }
      {
        # clear search highlighting
        mode = [ "n" ];
        key = "<space><space>";
        action = "<cmd>nohlsearch<CR>";
        options = { noremap = true; };
      }

      # ======== Movement ========
      {
        # move down through wrapped lines
        mode = [ "n" ];
        key = "j";
        action = "gj";
        options = { noremap = true; };
      }
      {
        # move up through wrapped lines
        mode = [ "n" ];
        key = "k";
        action = "gk";
        options = { noremap = true; };
      }
      {
        # rebind 1/2 page down
        mode = [ "n" ];
        key = "<C-j>";
        action = "<C-d>";
        options = { noremap = true; };
      }
      {
        # rebind 1/2 page up
        mode = [ "n" ];
        key = "<C-k>";
        action = "<C-u>";
        options = { noremap = true; };
      }
      {
        # move to beginning/end of line
        mode = [ "n" ];
        key = "E";
        action = "$";
        options = { noremap = true; };
      }
      # {
      #   # disable default move to beginning/end of line
      #   mode = ["n"];
      #   key = "$";
      #   action = "<nop>";
      # }

      # =========== Fugitive Plugin =========
      {
        # quick git status
        mode = [ "n" ];
        key = "<Leader>gs";
        action = "<cmd>G<CR>";
        options = { noremap = true; };
      }
      {
        # quick merge command: take from right page (tab 3) upstream
        mode = [ "n" ];
        key = "<Leader>gj";
        action = "<cmd>diffget //3<CR>";
        options = { noremap = true; };
      }
      {
        # quick merge command: take from left page (tab 2) head
        mode = [ "n" ];
        key = "<Leader>gf";
        action = "<cmd>diffget //2<CR>";
        options = { noremap = true; };
      }

      # ========== Telescope Plugin =========
      {
        # find files
        mode = [ "n" ];
        key = "<Leader>ff";
        action = "<cmd>Telescope find_files<CR>";
        options = { noremap = true; };
      }
      {
        # live grep
        mode = [ "n" ];
        key = "<Leader>fg";
        action = "<cmd>Telescope live_grep<CR>";
        options = { noremap = true; };
      }
      {
        # buffers
        mode = [ "n" ];
        key = "<Leader>fb";
        action = "<cmd>Telescope buffers<CR>";
        options = { noremap = true; };
      }
      {
        # help tags
        mode = [ "n" ];
        key = "<Leader>fh";
        action = "<cmd>Telescope help_tags<CR>";
        options = { noremap = true; };
      }

      # ========= Twiggy =============
      {
        # toggle display twiggy
        mode = [ "n" ];
        key = "<Leader>tw";
        action = ":Twiggy<CR>";
        options = { noremap = true; };
      }
    ];
    extraConfigVim = ''
      " ================ Persistent Undo ==================
      " Keep undo history across sessions, by storing in file.
      " Only works all the time.
      if has('persistent_undo')
          silent !mkdir ~/.vim/backups > /dev/null 2>&1
          set undodir=~/.vim/backups
          set undofile
      endif

      " ================ Vim Wiki config =================
      " See :h vimwiki_list for info on registering wiki paths
      let wiki_0 = {}
      let wiki_0.path = '~/dotfiles.wiki/'
      let wiki_0.index = 'home'
      let wiki_0.syntax = 'markdown'
      let wiki_0.ext = '.md'

      " fill spaces in page names with _ in pathing
      let wiki_0.links_space_char = '_'

      " TODO: nixvim: CONFIRM THESE PATHS FOR NIXOS
      let wiki_1 = {}
      let wiki_1.path = '~/doc/foundry/thefoundry.wiki/'
      let wiki_1.index = 'home'
      let wiki_1.syntax = 'markdown'
      let wiki_1.ext = '.md'
      " fill spaces in page names with _ in pathing
      let wiki_1.links_space_char = '_'

      let g:vimwiki_list = [wiki_0, wiki_1]
      " let g:vimwiki_list = [wiki_0, wiki_1, wiki_2]

      " ================ Ale ========================
      " linter and fixer packages have to be installed via AUR or pamac
      let g:ale_linters = {
                  \ 'c': ['clang-tidy'],
                  \ 'python': ['flake8'],
                  \ 'vim': ['vint'],
                  \ 'markdown': ['markdownlint'],
      \ }

      let g:ale_fixers = {
            \ 'c': ['clang-format'],
            \ 'javascript': ['prettier', 'eslint'],
            \ 'json': ['fixjson', 'prettier'],
            \ 'python': ['black', 'isort'],
            \ }

      " Set global fixers for all file types except Markdown
      " Why? because double spaces at the end of a line in markdown indicate a
      " linebreak without creating a new paragraph
      function! SetGlobalFixers()
        let g:ale_fixers['*'] = ['trim_whitespace', 'remove_trailing_lines']
      endfunction

      augroup GlobalFixers
        autocmd!
        autocmd VimEnter * call SetGlobalFixers()
      augroup END

      " Set buffer-local fixers for Markdown files
      augroup MarkdownFixers
        autocmd!
        autocmd FileType markdown let b:ale_fixers = ['prettier']
      augroup END

      let g:ale_fix_on_save = 1
    '';

    # extraConfigLua = ''
    # -- ========= Colorscheme Overrides ==========
    # -- Override cursor color and blink for nav and visual mode
    # vim.cmd("highlight Cursor guifg=black guibg=orange");
    #
    # -- Override cursor color for insert mode
    # vim.cmd("highlight iCursor guifg=black guibg=orange");
    # '';
  };
}

# # Syntax support
# vim-polyglot # a collection of language packs for vim
#
# # The following are commented out because they are already included in vim-polyglot
# # but in case poly-glot fails I want to be able to quickly enable what I need.
# haskell-vim
# plantuml-syntax
# pgsql-vim
# python-syntax
# rust-vim
# vim-markdown
# vim-nix
# vim-terraform
# vim-toml