Java not found on NixOS

[pishleback]

Trying to install FAF on NixOS.

I've followed all the installation steps up to running ./run, which outputs:

No suitable Java Virtual Machine could be found on your system.
The version of the JVM must be at least 21.
Please define INSTALL4J_JAVA_HOME to point to a suitable JVM.

The steam part of my configuration.nix looks like

  programs.steam = {
    enable = true;

    remotePlay.openFirewall = true;
    dedicatedServer.openFirewall = true;

    package = with pkgs; steam.override {
      extraPkgs = pkgs: [
        jq
        cabextract
        wget
        git
        pkgsi686Linux.libpulseaudio
        pkgsi686Linux.freetype
        pkgsi686Linux.xorg.libXcursor
        pkgsi686Linux.xorg.libXcomposite
        pkgsi686Linux.xorg.libXi
      ];
    };
  };

When running setup.sh I can see java.tar.gz being downloaded and extracted, and there is a jdk-21.0.5+11 folder inside the faf-linux folder. I've also tried installing java system-wide (verified with java -version) but java is still not found by ./run.

I've tried running ./update-component.sh java "<java url>" with the latest <java url> as in the main readme, but that does not fix it.

Running all commands inside steam-run bash.

Any ideas? Thanks