let 
  nixpkgs = import <nixpkgs> {};
  pkgsSrc = nixpkgs.pkgs.fetchFromGitHub {
    owner = "nixos";
    repo = "nixpkgs-channels";
    rev = "adfcc2d9531e78bf6a9e3b56e2f4fc873cb3d87b";
    sha256 = "101mh6gb9wlx0lq5pw2m0n1fi3h2pag3ndg184rrqzvn9ynp28iw";
  };
  pkgs = import pkgsSrc {};

  eqexam.pkgs = [
    (pkgs.stdenv.mkDerivation rec {
      version = "2012-05-17";
      pname = "eqexam";
      name = "${pname}-${version}";
      tlType = "run";

      src = pkgs.fetchurl {
        url = "http://www.math.uakron.edu/~dpstory/eqexam/eqexam_pack.zip";
        sha256 = "0g4w9ma6cr277li5b8dps9fm9jkjlwzwjc6ix01mw4kva4h5fdrj";
      };

      buildInputs = [ pkgs.unzip pkgs.texlive.combined.scheme-basic ];

      buildPhase = "
        latex eqexam.ins
      ";

      installPhase = "
        mkdir -p $out/tex/latex/eqexam
        cp -va *.sty *.cfg *.def $out/tex/latex/eqexam

        mkdir -p $out/doc/latex/eqexam
        cp -va doc/* $out/doc/latex/eqexam
      ";

      meta = {
        branch = "3";
        platforms = pkgs.stdenv.lib.platforms.unix;
      };
    })
  ];

  mytexlive =  (pkgs.texlive.combine {
    inherit (pkgs.texlive) scheme-full;
    inherit eqexam;
  });

in pkgs.stdenv.mkDerivation {
  name = "msc-thesis";
  shellHook = ''
    alias vim-thesis="vim -p --servername VIM -- \
      $PWD/src/docs/thesis.tex \
      $PWD/src/docs/glossary.tex \
      $PWD/src/docs/parts/context/context.tex \
      $PWD/src/docs/parts/research/research.tex \
    "
  '';
  buildInputs = [ 
    pkgs.xdotool
    (pkgs.vim_configurable.customize {
      name = "vim"; 
      vimrcConfig = {
        # add custom .vimrc lines like this:
        customRC = ''
          set nocompatible

          " leader
          let mapleader = ','

          set hidden
          syntax on
          set hlsearch
          set number

          " mappings to stop insert mode
          imap jjj <ESC>
          imap kkk <ESC>
          imap lll <ESC>
          imap hhh <ESC>
          set scroll=11

          noremap <C-n> :tabn<CR>
          noremap <C-p> :tabp<CR>
          let g:ctrlp_map = '<tab>'
          let g:ctrlp_custom_ignore = {
            \ 'dir':  '\v[\/]\.(git|hg|svn|)$$',
            \ 'file': '\v\.(exe|so|dll|so|swp|zip|aux|log|fdb_latexmk|fdb|dvi|lof|lot|pdf|fls|toc|gz|latexmain)$$',
            \ }

          " allways show status line
          set ls=2
          set tabstop=4
          set shiftwidth=4
          set softtabstop=4
          set expandtab
          "set textwidth=80

          " sync default register to clipboard {
          if has('unnamedplus')
            set clipboard=unnamedplus
          else
            set clipboard=unnamed
          endif
          " }

          " colored brackets {
          let g:rbpt_colorpairs = [
              \ ['brown',       'RoyalBlue3'],
              \ ['Darkblue',    'SeaGreen3'],
              \ ['darkgray',    'DarkOrchid3'],
              \ ['darkgreen',   'firebrick3'],
              \ ['darkcyan',    'RoyalBlue3'],
              \ ['darkred',     'SeaGreen3'],
              \ ['darkmagenta', 'DarkOrchid3'],
              \ ['brown',       'firebrick3'],
              \ ['gray',        'RoyalBlue3'],
              \ ['black',       'SeaGreen3'],
              \ ['darkmagenta', 'DarkOrchid3'],
              \ ['Darkblue',    'firebrick3'],
              \ ['darkgreen',   'RoyalBlue3'],
              \ ['darkcyan',    'SeaGreen3'],
              \ ['darkred',     'DarkOrchid3'],
              \ ['red',         'firebrick3'],
              \ ]
          let g:rbpt_max = 16
          let g:rbpt_loadcmd_toggle = 0

          au VimEnter * RainbowParenthesesToggle
          au Syntax * RainbowParenthesesLoadRound
          au Syntax * RainbowParenthesesLoadSquare
          au Syntax * RainbowParenthesesLoadBraces
          " }
          set backspace=indent,eol,start
          colorscheme PaperColor

          " Latex Related {{{
          au BufRead,BufNewFile *.tex,*.md,*.markdown setlocal spell spelllang=en_us

          let g:vimtex_view_method = 'zathura'

          let g:vimtex_complete_enabled = 1
          let g:vimtex_complete_close_braces = 1
          let g:vimtex_complete_recursive_bib = 1
					let g:vimtex_indent_enabled = 1
					let g:vimtex_indent_bib_enabled = 1

					if !exists('g:ycm_semantic_triggers')
						let g:ycm_semantic_triggers = {}
					endif
          let g:ycm_semantic_triggers.tex = [
						\ 're!\\[A-Za-z]*cite[A-Za-z]*(\[[^]]*\]){0,2}{[^}]*',
						\ 're!\\[A-Za-z]*ref({[^}]*|range{([^,{}]*(}{)?))',
						\ 're!\\hyperref\[[^]]*',
						\ 're!\\includegraphics\*?(\[[^]]*\]){0,2}{[^}]*',
						\ 're!\\(include(only)?|input){[^}]*',
						\ 're!\\\a*(gls|Gls|GLS)(pl)?\a*(\s*\[[^]]*\]){0,2}\s*\{[^}]*',
						\ 're!\\includepdf(\s*\[[^]]*\])?\s*\{[^}]*',
						\ 're!\\includestandalone(\s*\[[^]]*\])?\s*\{[^}]*',
						\ ]

          function! ViewerCallback() dict
            call self.forward_search(self.out)
          endfunction
          let g:vimtex_view_zathura_hook_callback = 'ViewerCallback'
          " }}}
         '';

         vam.knownPlugins = pkgs.vimPlugins;
         vam.pluginDictionaries = [
           "youcompleteme"
           "vim-airline"
           "ctrlp"
           "vim-css-color"
           "rainbow_parentheses"
           "vim-colorschemes"
           "vim-signify"
           "vimtex"
        ];
      };
    })
    mytexlive
    pkgs.zathura
  ]; 
}