{ ... }: {
  perSystem = { pkgs, nodejs, ... }: {
  packages.vivifyManuallyDerived = pkgs.stdenv.mkDerivation (finalAttrs: {
    pname = "vivify";
    version = "0.14.0";
  
    src = pkgs.fetchFromGitHub {
      owner = "jannis-baum";
      repo = "Vivify";
      tag = "v${finalAttrs.version}";
      hash = "sha256-CszMG+c0bNHfXWqcI3b4iGpeFJ+FmzHDzxflPS+wEe0=";
    };
  
    yarnOfflineCache = pkgs.fetchYarnDeps {
      yarnLock = "${finalAttrs.src}/yarn.lock";
      hash = "sha256-svgEanFiBSQn0TdTuB0CnLR71lkANABEaDiKB+Vc0Rc=";
    };
  
    installPhase = ''
      runHook preInstall
  
      yarn install
  
      substituteInPlace node_modules/.bin/tsc \
        --replace-fail '/usr/bin/env node' '${pkgs.lib.getExe nodejs}'
  
      substituteInPlace node_modules/.bin/webpack \
        --replace-fail '/usr/bin/env node' '${pkgs.lib.getExe nodejs}'
  
      substituteInPlace node_modules/.bin/postject \
        --replace-fail '/usr/bin/env node' '${pkgs.lib.getExe nodejs}'
  
      make VIV_VERSION=${finalAttrs.version} linux
  
      mkdir -p $out/bin
      install -Dm755 ./build/linux/viv $out/bin/viv
      install -Dm755 ./build/linux/vivify-server $out/bin/vivify-server
  
      wrapProgram $out/bin/viv \
        --prefix PATH : ${
        pkgs.lib.makeBinPath [
          pkgs.nodejs
          pkgs.file
        ]
      }
    '';
  
    nativeBuildInputs = with pkgs; [
      yarnConfigHook
      npmHooks.npmInstallHook
      zip
  
      nodejs
      file
    ];
  
    # Stripping 'unneeded symbols' causes vivify-server executable to break
    # (segmentation fault)
    dontStrip = true;
  
    passthru.updateScript = pkgs.nix-update-script {};
  
    meta = {
      description = "Live Markdown viewer";
      longDescription = ''
        Vivify brings your files to life in the browser!
        Vivify is primarily made to render Markdown and Jupyter Notebooks, but will also
        serve as a directory browser and let you view code files with syntax highlighting.
      '';
      homepage = "https://github.com/jannis-baum/Vivify";
      changelog = "https://github.com/jannis-baum/Vivify/releases/tag/v${finalAttrs.src.tag}";
      license = pkgs.lib.licenses.gpl3;
      maintainers = with pkgs.lib.maintainers; [skohtv];
      platforms = pkgs.lib.platforms.linux;
      mainProgram = "viv";
    };
  });
};}