Fails with Azul JDK

[Alex Vorobiev]

I use Azul JDK (configured in an overlay) and nix-index fails:

 nix-index
+ querying available packages
error: querying available packages failed
caused by: nix-env failed with error: nix-env failed with exit code 1:
error: attribute 'jre' missing

       at /nix/store/6hmwry071zcdf5jphlrxgv3amgwwqc7n-nixpkgs/nixpkgs/pkgs/games/dwarf-fortress/wrapper/default.nix:134:28:

          133|       --subst-var-by stdenv_shell ${stdenv.shell} \
          134|       --subst-var-by jre ${jdk.jre} \
             |                            ^
          135|       --subst-var dfInit
       Did you mean src?
(use '--show-trace' to show detailed location information)