Iwakura/modules/neovim/default.nix

{ pkgs, ... }: {
  programs.neovim = {
    enable = true;
    viAlias = true;
    vimAlias = true;
    configure = {
      customRC = ''
        let mapleader="\<SPACE>"
  
        syntax on
        filetype on
        filetype plugin indent on
  
        set showmatch
        set number
        set formatoptions+=o
        set expandtab
        set tabstop=3
        set shiftwidth=3
  
        set nojoinspaces
  
        set splitbelow
        set splitright
  
        if !&scrolloff
          set scrolloff=3
        endif
        if !&sidescrolloff
          set sidescrolloff=3
        endif
        set nostartofline
  
        if &listchars ==# 'eol:$'
          set listchars=tab:>\ ,trail:-,extends:>,precedes:<,nbsp:+
        endif
        set list
  
        set ignorecase
        set smartcase
        set gdefault
  
        if maparg('<C-L>', 'n') ==# '''
          nnoremap <silent> <C-L> :nohlsearch<CR><C-L>
        endif
  
        nmap <Leader>s :%s//g<Left><Left>
  
        function! NumberToggle()
          if(&relativenumber == 1)
            set nornu
            set number
          else
            set rnu
          endif
        endfunc
  
        nnoremap <Leader>r :call NumberToggle()<cr>
  
        nnoremap <Leader>o :CtrlP<CR>
        nnoremap <Leader>b :CtrlPBuffer<CR>
        nnoremap <Leader>f :CtrlPMRUFiles<CR>
  
        let g:airline#extensions#tabline#enabled = 2
        let g:airline#extensions#tabline#fnamemod = ':t'
        let g:airline#extensions#tabline#left_sep = ' '
        let g:airline#extensions#tabline#left_alt_sep = '|'
        let g:airline#extensions#tabline#right_sep = ' '
        let g:airline#extensions#tabline#right_alt_sep = '|'
        let g:airline_left_sep = ' '
        let g:airline_left_alt_sep = '|'
        let g:airline_right_sep = ' '
        let g:airline_right_alt_sep = '|'
  
        let g:idris_indent_if = 3
        let g:idris_indent_case = 5
        let g:idris_indent_let = 4
        let g:idris_indent_where = 6
        let g:idris_indent_do = 3
        let g:idris_indent_rewrite = 8
  
        autocmd FileType idris :packadd idris2-vim

        let g:rainbow_conf = {
         \ 'ctermfgs': ['red', 'green', 'blue', 'cyan', 'magenta'],
         \ 'cterms': ['bold']
         \}
      '';
      packages.nix = with pkgs.vimPlugins; {
        start = [
          vim-nix
          vim-racket
          idris2-vim
          airline
          ctrlp
          vim-javascript-syntax
          rainbow_parentheses
        ];
      };
    };
  };
}