releaseExpr = absPath(*arg);

                releaseExpr = *arg;

        state.evalFile(releaseExpr, v);

        state.evalFile(lookupFileArg(state, releaseExpr), v);

    my $nixExprFullPath = $nixExprInput->{storePath} . "/" . $nixExprPath;

    my @cmd = ($evaluator, $nixExprFullPath, "--gc-roots-dir", getGCRootsDir, "-j", 1, inputsToArgs($inputInfo, $exprType));

    my @cmd = ($evaluator,
               "<" . $nixExprInputName . "/" . $nixExprPath . ">",
               "--gc-roots-dir", getGCRootsDir,
               "-j", 1,
               inputsToArgs($inputInfo, $exprType));