with import <nixpkgs> {};
let
  nixpkgs = import <nixpkgs> {};
  fetchedGithub = path:
    let
      json = lib.importJSON path;
    in rec {
      version = json.tag;
      name = "${json.meta.name}-${version}";
      src = fetchFromGitHub json.github;
    };

  ledger = (nixpkgs.ledger.override { boost = boost166; }).overrideAttrs (oldAttrs:
    fetchedGithub ./fetched/ledger.json // {
      postInstall = "";
    }
  );

  taskwarrior = nixpkgs.taskwarrior.overrideAttrs (oldAttrs: rec {
    postInstall = ''${oldAttrs.postInstall}
      mkdir -p "$out/share/vim/vimfiles/ftdetect"
      mkdir -p "$out/share/vim/vimfiles/syntax"
      ln -s "../../../../share/doc/task/scripts/vim/ftdetect/task.vim" "$out/share/vim/vimfiles/ftdetect/"
      ln -s "../../../../share/doc/task/scripts/vim/syntax/taskrc.vim" "$out/share/vim/vimfiles/syntax/"
      ln -s "../../../../share/doc/task/scripts/vim/syntax/taskdata.vim" "$out/share/vim/vimfiles/syntax/"
      ln -s "../../../../share/doc/task/scripts/vim/syntax/taskedit.vim" "$out/share/vim/vimfiles/syntax/"
    '';
  });

  vit = (nixpkgs.vit.override { inherit taskwarrior; }).overrideAttrs (oldAttrs:
    fetchedGithub ./fetched/vit.json // {
      buildInputs = oldAttrs.buildInputs ++ [perlPackages.TryTiny perlPackages.TextCharWidth];
    }
  );

  #weechat = callPackage nixpkgs.weechat { guileSupport = false; luaSupport = false; rubySupport = false; tclSupport = false; };
in
  {
    inherit ledger;
    inherit taskwarrior vit;
  }