anchor.diff:        deb = arch: diskImage: vmBuild {
           name = replace "-src$" "-${arch}" dsc.name;
           attrs = { src = dsc; };
  -	builder = ''
  +	build = ''
             PATH=/usr/bin:/bin:/usr/sbin:/sbin
             mkdir /build
             dpkg-source -x $src/*.dsc /build/source
  
positive.code:     name = "rethinkdb-${version}";
      version = unsafeDiscardStringContext (readFile versionFile);
      builder = mkBuilder ''
        # TODO: https://github.com/NixOS/nixpkgs/issues/13744
        export SSL_CERT_FILE=$cacert/etc/ssl/certs/ca-bundle.crt
        cp -r $src rethinkdb
        chmod -R u+w rethinkdb
        cd rethinkdb
        echo "${version}" > VERSION.OVERRIDE
        cp -r --no-preserve=all $fetchDependencies/* .
        ${patchScripts}
  
negative.code:       dsc = vmBuild {
          name = "rethinkdb-${sourcePrep.version}-${name}-src";
          attrs = { src = sourcePrep; };
          build = ''
            cp -r $src rethinkdb
            cd rethinkdb
            ./configure
  