neovim.nix

neovim.nix

{ pkgs, lib, ... }:

with import (./tricky-channels.nix);
let
  customPlugins.vim-sml = unstable.vimUtils.buildVimPlugin {
    pname = "vim-sml";
    version = "2013-10-23";
    src = unstable.fetchFromGitHub {
      owner = "cypok";
      repo = "vim-sml";
      rev = "4c4d59b3fb92ba6cfaf955432e214bda639e7621";
      sha256 = "10s30inpfiavvzskkk2av4wbdli1mp92zd55p69577ynskz8hq4y";
    };
  };
  customPlugins.vim-better-sml = unstable.vimUtils.buildVimPlugin {
    pname = "vim-better-sml";
    version = "2019-08-25";
    src = unstable.fetchFromGitHub {
      owner = "jez";
      repo = "vim-better-sml";
      rev = "1f36431290690f66c9de8316821edff605421dd5";
      sha256 = "0v5wbbjxz7k3ifpnl5l06zkwp3wfcs52bzwhs9i89f9g1wkkgq74";
    };
    buildInputs = with pkgs; [ mlton ];
  };
  customPlugins.ats-vim = unstable.vimUtils.buildVimPlugin {
    pname = "ats-vim";
    version = "2019-10-21";
    src = unstable.fetchFromGitHub {
      owner = "vmchale";
      repo = "ats-vim";
      rev = "a17576687217a2e8066356cc211afb99b5de65e8";
      sha256 = "0dv60za39v2w5d9mbk1r263fqpv11bdfyqp39b0snw40f0kh92z0";
    };
  };
in
{
  imports = [ ];
  environment.systemPackages = with pkgs; [
    smlnj
    mlton
    (unstable.vim_configurable.customize {
      name = "vim";
      vimrcConfig.vam.knownPlugins = unstable.vimPlugins // customPlugins;
      vimrcConfig.vam.pluginDictionaries = [
        # vim-nix handles indentation better but does not perform sanity
        {
          names = [ "vim-addon-nix" ];
          ft_regex = "^nix$";
        }
        {
          names = [
            "LanguageClient-neovim"
            "tlib"
            "direnv-vim"
            "fzf-vim"
            "fzfWrapper"
            "ranger-vim"
            "typescript-vim"
            "vim-better-whitespace"
            "vim-trailing-whitespace"
            "vim-sml"
            "vim-better-sml"
            "vim-ledger"
            "ats-vim"
            "ale"
            #"nerdtree"
            #"nerdtree-git-plugin"
          ];
        }
      ];

      vimrcConfig.customRC = ''
        " activates filetype detection
        filetype plugin indent on

        " activates syntax highlighting among other things
        syntax on

        " allows you to deal with multiple unsaved
        " buffers simultaneously without resorting
        " to misusing tabs
        set hidden

        " just hit backspace without this one and
        " see for yourself
        set backspace=indent,eol,start

        " highlight white space
        :highlight ExtraWhitespace ctermbg=red guibg=red
        :match ExtraWhitespace /\s\+$/

        " highlight white space
        :highlight ExtraWhitespace ctermbg=red guibg=red
        :match ExtraWhitespace /\s\+$/

        " remove white space
        :nnoremap <silent> <F5> :let _s=@/ <Bar> :%s/\s\+$//e <Bar> :let @/=_s <Bar> :nohl <Bar> :unlet _s <CR>

        let g:LanguageClient_serverCommands = { 'haskell': ['hie-wrapper'] }
        nnoremap <F4> :call LanguageClient_contextMenu()<CR>
        map <Leader>lk :call LanguageClient#textDocument_hover()<CR>
        map <Leader>lg :call LanguageClient#textDocument_definition()<CR>
        map <Leader>lr :call LanguageClient#textDocument_rename()<CR>
        map <Leader>lf :call LanguageClient#textDocument_formatting()<CR>
        map <Leader>lb :call LanguageClient#textDocument_references()<CR>
        map <Leader>la :call LanguageClient#textDocument_codeAction()<CR>
        map <Leader>ls :call LanguageClient#textDocument_documentSymbol()<CR>

      '';

    })

    (unstable.neovim.override {
      #       vimAlias = true;
      configure = {
        customRC = ''
          if filereadable($HOME . "/.vimrc")
            source ~/.vimrc
          endif
        '';
        # let $RUST_SRC_PATH = '${
        #   pkgs.stdenv.mkDerivation {
        #     inherit (unstable.pkgs.rustc) src;
        #     inherit (unstable.pkgs.rustc.src) name;
        #     phases = [ "unpackPhase" "installPhase" ];
        #     installPhase = "cp -r src $out";
        #   }
        # }'
        packages.myVimPackage = with unstable.vimPlugins // customPlugins; {
          # see examples below how to use custom packages
          start = [
            vim-addon-nix
            LanguageClient-neovim
            tlib
            direnv-vim
            fzf-vim
            fzfWrapper
            ranger-vim
            typescript-vim
            vim-better-whitespace
            vim-trailing-whitespace
            vim-sml
            vim-better-sml
            vim-ledger
            ats-vim
            ale
            # nvim-completion-manager
            # nvim-cm-racer
          ];
          opt = [ ];
        };
      };
    })
  ];

}

tricky-channels.nix

with import <nixpkgs> { };
{
  unstable = import (fetchTarball "channel:nixos-unstable") { config = { allowUnfree = true; }; };

  nixos-2003 = import (fetchTarball "channel:nixos-20.03") { config = { allowUnfree = true; }; };
}