sub nixpkg :Local {
    my ($self, $c, $buildId) = @_;

    my $build = getBuild($c, $buildId);
    return error($c, "Build $buildId doesn't exist.") if !defined $build;

    return error($c, "Build $buildId cannot be downloaded as a Nix package.")
        if !$build->buildproducts->find({type => "nix-build"});
    return error($c, "Path " . $build->outpath . " is no longer available.") unless isValidPath($build->outpath);
    $c->stash->{current_view} = 'Hydra::View::NixPkg';
    $c->stash->{build} = $build;
    $c->response->content_type('application/nix-package');
}

        my $deriver = `nix-store --query --deriver $path`
            or die "cannot query deriver of `$path': $?";
        chomp $deriver;

            "  StorePath: ${path}y\n" .

            "  StorePath: $path\n" .
            (scalar @refs > 0 ? "  References: @refs\n" : "") .
            ($deriver ne "unknown-deriver" ? "  Deriver: $deriver\n" : "") .

            "  References: @refs\n" .

    <li class="product">

      
      <li class="product">
        <a href="[% c.uri_for('/nixpkg' build.id) %]">
          <img src="/static/images/nix-build.png" alt="Source" />
          One-click install of Nix package <tt>[% build.nixname %]</tt>
        </a>
        [<a class="productDetailsToggle" href="javascript:">help</a>]
        <div class="help productDetails">
          <p>If you have Nix installed on your machine, you can
          install this package and all its dependencies automatically
          by clicking on the link above.  This requires that you have
          the <tt>application/nix-package</tt> MIME type associated
          with the <tt>nix-install-package</tt> program in your web
          browser.  Alternatively, you can install it from the
          command-line:
          
          <pre>$ nix-install-package --non-interactive --url [% c.uri_for('/nixpkg' build.id) %]</pre>
          
          </p>
          <p>If you get an error message “Permission denied”, you
          should make sure that you have sufficient access rights to
          the Nix store, e.g., run the command as <tt>root</tt>.
          
          </p>
        </div>
      </li>
      <li class="product">

          Nix build of path <tt>[% product.path %]</tt>

          Nix closure of path <tt>[% product.path %]</tt>

          <p>If you have Nix installed on your machine, this build and all
          its dependencies can be unpacked into your local Nix store by
          doing:</p>

          <p>If you have Nix installed on your machine, this build and
          all its dependencies can be unpacked into your local Nix
          store by doing:</p>

          <pre>$ gunzip < [% HTML.escape(build.nixname) %].closure.gz | nix-store --import</pre>

          <pre>$ gunzip &lt; [% HTML.escape(build.nixname) %].closure.gz | nix-store --import</pre>

          -->

      </li>

      
      <li class="product">

      </li>

      
      <li class="product">

      </li>

      <li class="product">

      </li>

      
      <li class="product">

      </li>

    </li>