nixosTests.postgresql: Fix attribute name shadowing

    '';

  };

in

  (mapAttrs' (name: package: { inherit name; value=make-postgresql-test name package false;}) postgresql-versions) //

  (mapAttrs' (name: package: { inherit name; value=mk-ensure-clauses-test name package;}) postgresql-versions) //

  {

  concatMapAttrs (name: package: {

    ${name} = make-postgresql-test name package false;

    ${name + "-clauses"} = mk-ensure-clauses-test name package;

  }) postgresql-versions

  // {

    postgresql_11-backup-all = make-postgresql-test "postgresql_11-backup-all" postgresql-versions.postgresql_11 true;

  }