Output path comparison

nix-env failed:
error:
       … while evaluating call site

       at «none»:0: (source not available)

       … while calling anonymous lambda

       at /var/lib/ofborg/checkout/repo/38dca4e3aa6bca43ea96d2fcc04e8229/mr-est/ofborg-evaluator-6/.gc-of-borg-outpaths.nix:48:12:

           47|   tweak = lib.mapAttrs
           48|     (name: val:
             |            ^
           49|       if name == "recurseForDerivations" then true

       … while evaluating call site

       at «none»:0: (source not available)

       … while calling 'g'

       at /var/lib/ofborg/checkout/repo/38dca4e3aa6bca43ea96d2fcc04e8229/mr-est/ofborg-evaluator-6/lib/attrsets.nix:599:19:

          598|           g =
          599|             name: value:
             |                   ^
          600|             if isAttrs value && cond value

       … while evaluating call site

       at «none»:0: (source not available)

       … while calling anonymous lambda

       at /var/lib/ofborg/checkout/repo/38dca4e3aa6bca43ea96d2fcc04e8229/mr-est/ofborg-evaluator-6/pkgs/top-level/release-lib.nix:148:38:

          147|      set of meta.platforms values. */
          148|   packagePlatforms = mapAttrs (name: value:
             |                                      ^
          149|       if isDerivation value then

       … while evaluating call site

       at /var/lib/ofborg/checkout/repo/38dca4e3aa6bca43ea96d2fcc04e8229/mr-est/ofborg-evaluator-6/pkgs/top-level/release-lib.nix:149:10:

          148|   packagePlatforms = mapAttrs (name: value:
          149|       if isDerivation value then
             |          ^
          150|         value.meta.hydraPlatforms

       … while calling 'isDerivation'

       at /var/lib/ofborg/checkout/repo/38dca4e3aa6bca43ea96d2fcc04e8229/mr-est/ofborg-evaluator-6/lib/attrsets.nix:640:5:

          639|     # Value to check.
          640|     value: value.type or null == "derivation";
             |     ^
          641|

       error: attribute 'nimble-unwrapped' missing

       at /var/lib/ofborg/checkout/repo/38dca4e3aa6bca43ea96d2fcc04e8229/mr-est/ofborg-evaluator-6/pkgs/top-level/all-packages.nix:13:2:

           12|
           13| {
             |  ^
           14|   # A module system style type tag