mio-ops/roles/vim.nix

with import <nixpkgs> {};

vim_configurable.customize {
  name = "vim";   # Specifies the vim binary name.
  # Below you can specify what usually goes into `~/.vimrc`
  vimrcConfig.customRC = ''
    " Preferred global default settings:
    set number                    " Enable line numbers by default
    set smartindent               " Automatically insert extra level of indentation
    set tabstop=4                 " Default tabstop
    set shiftwidth=4              " Default indent spacing
    set expandtab                 " Expand [TABS] to spaces
    syntax on                     " Enable syntax highlighting
    colorscheme gruvbox           " Set the default colour scheme
    set t_Co=256                  " Use 265 colors in vim
    set spell spelllang=en_au     " Defaul spell checking language
    hi clear SpellBad             " Clear any unwanted default settings
    hi SpellBad cterm=underline   " Set the spell checking highlight style
    hi SpellBad ctermbg=NONE      " Set the spell checking highlight background
    match ErrorMsg '\s\+$'        "

    let g:airline_powerline_fonts = 1   " Use powerline fonts
    let g:airline_theme='gruvbox'     " Set the airline theme

    "call togglebg#map("<F10>")   " Toggle background colour between dark|light

    set laststatus=2   " Set up the status line so it's coloured and always on

    " Removes trailing spaces:
    function! TrimWhiteSpace()
        %s/\s\+$//e
    endfunction

    nnoremap <silent> <Leader>RemoveTrailingWhiteSpace :call TrimWhiteSpace()<CR>
    autocmd FileWritePre    * :call TrimWhiteSpace()
    autocmd FileAppendPre   * :call TrimWhiteSpace()
    autocmd FilterWritePre  * :call TrimWhiteSpace()
    autocmd BufWritePre     * :call TrimWhiteSpace()

    " Light during the day, dark during the night
    let hour = strftime("%H")
    if 7 <= hour && hour < 17
      set background=light
      hi Normal ctermbg=none             " Set a transparent background
      let g:airline_gruvbox_bg='light'   " Set the airline background
    else
      set background=dark
      hi Normal ctermbg=none             " Set a transparent background
      let g:airline_gruvbox_bg='dark'    " Set the airline background
    endif

    " Transparent editing of gpg encrypted files.
    " By Wouter Hanegraaff <wouter@blub.net>
    augroup encrypted
        au!

        " First make sure nothing is written to ~/.viminfo while editing an encrypted file.
        autocmd BufReadPre,FileReadPre      *.gpg set viminfo=
        " We don't want a swap file, as it writes unencrypted data to disk
        autocmd BufReadPre,FileReadPre      *.gpg set noswapfile
        " Switch to binary mode to read the encrypted file
        autocmd BufReadPre,FileReadPre      *.gpg set bin
        autocmd BufReadPre,FileReadPre      *.gpg let ch_save = &ch|set ch=2
        autocmd BufReadPost,FileReadPost    *.gpg '[,']!gpg --decrypt 2> /dev/null
        " Switch to normal mode for editing
        autocmd BufReadPost,FileReadPost    *.gpg set nobin
        autocmd BufReadPost,FileReadPost    *.gpg let &ch = ch_save|unlet ch_save
        autocmd BufReadPost,FileReadPost    *.gpg execute ":doautocmd BufReadPost " . expand("%:r")

        " Convert all text to encrypted text before writing
        autocmd BufWritePre,FileWritePre    *.gpg   '[,']!gpg --default-key=A4122FF3971B6865 --default-recipient-self -ae 2>/dev/null
        " Undo the encryption so we are back in the normal text, directly
        " after the file has been written.
        autocmd BufWritePost,FileWritePost    *.gpg   u
    augroup END

    " Add files ending in md to the list of files recognised as markdown:
    autocmd BufNewFile,BufFilePre,BufRead *.md set filetype=markdown

    " My Markdown environment
    function! MarkdownSettings()
        set textwidth=79
        set spell spelllang=en_au
    endfunction
    autocmd BufNewFile,BufFilePre,BufRead *.mdwn :call MarkdownSettings()
    autocmd BufNewFile,BufFilePre,BufRead *.md :call MarkdownSettings()

    " My ReStructured Text environment
    function! ReStructuredSettings()
        set textwidth=79
        set spell spelllang=en_au
    endfunction
    autocmd BufNewFile,BufFilePre,BufRead *.rst :call ReStructuredSettings()
    autocmd BufNewFile,BufFilePre,BufRead *.txt :call ReStructuredSettings()

    " My LaTeX environment:
    function! LaTeXSettings()
        set textwidth=79
        set spell spelllang=en_au
    endfunction
    autocmd BufNewFile,BufFilePre,BufRead *.tex :call LaTeXSettings()

    " Settings for my Haskell environment:
    function! HaskellSettings()
        set tabstop=4
        set shiftwidth=4
        set expandtab
        set textwidth=79
    endfunction
    autocmd BufNewFile,BufFilePre,BufRead *.hs :call HaskellSettings()

    " Settings for my Nix environment:
    function! NixSettings()
        set tabstop=2
        set shiftwidth=2
        set expandtab
        set textwidth=79
        set filetype=nix
    endfunction
    autocmd BufNewFile,BufFilePre,BufRead *.nix :call NixSettings()

    " Settings for my Golang environment:
    function! GoSettings()
        set tabstop=7
        set shiftwidth=7
        set noexpandtab
    endfunction
    autocmd BufNewFile,BufFilePre,BufRead *.go :call GoSettings()

    " Settings for my Python environment:
    function! PythonSettings()
        set tabstop=4
        set shiftwidth=4
        set expandtab
        set textwidth=79
        set spell!
    endfunction
    autocmd BufNewFile,BufFilePre,BufRead *.py :call PythonSettings()

    " My Mutt environment
    function! MuttSettings()
        set textwidth=79
        set spell spelllang=en_au
        "set tabstop=4
        "set shiftwidth=4
        "set expandtab
    endfunction
    autocmd BufNewFile,BufFilePre,BufRead /tmp/mutt-* :call MuttSettings()
    autocmd BufNewFile,BufFilePre,BufRead /tmp/neomutt-* :call MuttSettings()

    " Settings for my C environment:
    function! CSettings()
        set tabstop=2
        set shiftwidth=2
        set expandtab
        set textwidth=79
    endfunction
    autocmd BufNewFile,BufFilePre,BufRead *.c :call CSettings()

    " Settings for my YAML environment:
    function! YAMLSettings()
        set tabstop=2
        set shiftwidth=2
        set expandtab
        set textwidth=79
    endfunction
    autocmd BufNewFile,BufFilePre,BufRead *.yaml :call YAMLSettings()

    " Settings for my Bash environment:
    function! BashSettings()
        set tabstop=4
        set shiftwidth=4
        set expandtab
        set textwidth=79
        set spell!
    endfunction
    autocmd BufNewFile,BufFilePre,BufRead *.sh :call BashSettings()

    " My Bzr commit environment
    function! BzrSettings()
        set textwidth=79
        set spell spelllang=en_au
        set tabstop=4
        set shiftwidth=4
        set expandtab
    endfunction
    autocmd BufNewFile,BufFilePre,BufRead bzr_* :call BzrSettings()
  '';
  # store your plugins in Vim packages
  vimrcConfig.packages.myVimPackage = with pkgs.vimPlugins; {
    start = [               # Plugins loaded on launch
      airline               # Lean & mean status/tabline for vim that's light as air
      ctrlp                 # Full path fuzzy file, buffer, mru, tag, ... finder for Vim
      ghc-mod-vim           # Happy Haskell programming on Vim, powered by ghc-mod
      gruvbox
      neco-ghc              # Completion plugin for Haskell, using ghc-mod
      neocomplete-vim       # Keyword completion system
      nerdcommenter         # Comment functions so powerful—no comment necessary
      nerdtree              # File system explorer
      nerdtree-git-plugin   # Plugin for nerdtree showing git status
      snipmate              # Concise vim script implementing TextMate's snippets features
      solarized             # Solarized colours for Vim
      supertab              # Allows you to use <Tab> for all your insert completion
      syntastic             # Syntax checking hacks
      tabular               # Script for text filtering and alignment
      vim-airline-themes    # Collection of themes for airline
      vim-colorschemes      # Collection of ViM colour schemes
      vim-nix               # Support for writing Nix expressions in vim
      vim-polyglot
      vimproc               # Interactive command execution required by ghc-mod-vim
    ];
    # manually loadable by calling `:packadd $plugin-name`
    # opt = [ phpCompletion elm-vim ];
    # To automatically load a plugin when opening a filetype, add vimrc lines like:
    # autocmd FileType php :packadd phpCompletion
  };
}