How could one use a specific version of rubygems with devenv?

[hasrthur]

Hi!
Thank you for the great package.
I need to use a specific version of rubygems. Though I have no idea how to do that. I use devenv and this is the point where I am stuck:

  languages.ruby = {
    enable = true;
    versionFile = ./.ruby-version;
    bundler = {
      enable = true;
      package = pkgs.bundler.override {
        ruby = config.languages.ruby.package.override {
          rubygems = "3.6.1";
        };
      };
    };
  };

and it gives me

• Using Cachix: devenv
building '/nix/store/jlxqv876szrwbisqy7nqpps3gjj8vpn0-ruby-3.3.4.drv'
Running phase: unpackPhase
unpacking source archive /nix/store/p1ic9a8il83gchhhkicn36flx501mm96-ruby-3.3.4.tar.gz
source root is ruby-3.3.4
setting SOURCE_DATE_EPOCH to timestamp 1720481304 of file ruby-3.3.4/yjit.rbinc
Running phase: patchPhase
cp: cannot stat '3.6.1': No such file or directory
error: builder for '/nix/store/jlxqv876szrwbisqy7nqpps3gjj8vpn0-ruby-3.3.4.drv' failed with exit code 1;
       last 6 log lines:
       > Running phase: unpackPhase
       > unpacking source archive /nix/store/p1ic9a8il83gchhhkicn36flx501mm96-ruby-3.3.4.tar.gz
       > source root is ruby-3.3.4
       > setting SOURCE_DATE_EPOCH to timestamp 1720481304 of file ruby-3.3.4/yjit.rbinc
       > Running phase: patchPhase
       > cp: cannot stat '3.6.1': No such file or directory
       For full logs, run 'nix log /nix/store/jlxqv876szrwbisqy7nqpps3gjj8vpn0-ruby-3.3.4.drv'.
error: 1 dependencies of derivation '/nix/store/b8s96ma4x3jrcf78c31bxqbfrybxjrm9-bundler-2.5.22.drv' failed to build
error: 1 dependencies of derivation '/nix/store/w0ykm154fs8vrrg93hdy7knkxj88dk2q-devenv-profile.drv' failed to build
error: 1 dependencies of derivation '/nix/store/vc24gxwiwkljajpiy4r65xx0yk7s770z-process-compose.yaml.drv' failed to build
error:
       error: 3 dependencies of derivation '/nix/store/z9y08ifhzs0q53bqa80alkywb8ij3q9m-devenv-shell-env.drv' failed to build
Error:   × Failed to run command `/nix/store/90h46i0fwrnci2mvbnr47w44njbz0qb5-nix-2.24-devenv/bin/nix --show-trace --extra-experimental-features nix-command --extra-experimental-features flakes
  │ --option warn-dirty false --keep-going --max-jobs 16 --option eval-cache false --option extra-substituters https://devenv.cachix.org --option extra-trusted-public-keys devenv.cachix.org-
  │ 1:w1cLUi8dv3hnoSPGAuibQv+f9TZLr6cv/Hm9XgU50cw= print-dev-env --profile /home/artur/Projects/InterviewsOnline/saas-ruby/.devenv/gc/shell -vv --log-format internal-json`
  ╰─▶ Nix command failed: exit status: 1

direnv: failed to build the devenv environment. devenv.nix may contain errors. see above.

I am not sure what file it wants to be honest. Any ideas on where to dig?