--set HYDRA_RELEASE ${tarball.version}

                  --set HYDRA_RELEASE ${tarball.version} \
                  --set NIX_RELEASE ${nix.name}

    $c->stash->{nixVersion} = $ENV{"NIX_RELEASE"} || "<devel>";

          <em>Hydra [% HTML.escape(version) %].</em>

          <em>Hydra [% HTML.escape(version) %] (using [% HTML.escape(nixVersion) %]).</em>