`haskellPackages.callPackage`).

- `pkgs.ghc.withPackages` as well as `haskellPackages.ghcWithPackages` etc.
  now needs be overridden directly, as opposed to overriding the result of
  calling it. Additionally, the `withLLVM` parameter has been renamed to
  `useLLVM`. So instead of `(ghc.withPackages (p: [])).override { withLLVM = true; }`,
  one needs to use `(ghc.withPackages.override { useLLVM = true; }) (p: [])`.

- The update of the haskell package set brings with it a new version of the `xmonad`
  module, which will break your configuration if you use `launch` as entrypoint. The
  example code the corresponding nixos module was adjusted, you may want to have a look at it.

- The `home-assistant` module now requires users that don't want their
  configuration to be managed declaratively to set
  `services.home-assistant.config = null;`. This is required
  due to the way default settings are handled with the new settings style.

  Additionally the default list of `extraComponents` now includes the minimal
  dependencies to successfully complete the [onboarding](https://www.home-assistant.io/getting-started/onboarding/)
  procedure.

- `pkgs.emacsPackages.orgPackages` is removed because org elpa is deprecated.
  The packages in the top level of `pkgs.emacsPackages`, such as org and
  org-contrib, refer to the ones in `pkgs.emacsPackages.elpaPackages` and
  `pkgs.emacsPackages.nongnuPackages` where the new versions will release.

- The configuration and state directories used by `nixos-containers` have been
  moved from `/etc/containers` and `/var/lib/containers` to
  `/etc/nixos-containers` and `/var/lib/nixos-containers`.

  If you are changing `system.stateVersion` to `"22.05"` manually on an existing
  system you are responsible for migrating these directories yourself.

  This is to improve compatibility with `libcontainer` based software such as Podman and Skopeo
  which assumes they have ownership over `/etc/containers`.

- `lib.systems.supported` has been removed, as it was overengineered for determining the systems to support in the nixpkgs flake. The list of systems exposed by the nixpkgs flake can now be accessed as `lib.systems.flakeExposed`.

- For new installations `virtualisation.oci-containers.backend` is now set to `podman` by default.
  If you still want to use Docker on systems where `system.stateVersion` is set to to `"22.05"` set `virtualisation.oci-containers.backend = "docker";`.Old systems with older `stateVersion`s stay with "docker".

- `security.klogd` was removed.  Logging of kernel messages is handled
  by systemd since Linux 3.5.

- `pkgs.ssmtp` has been dropped due to the program being unmaintained.
  `pkgs.msmtp` can be used instead as a substitute `sendmail` implementation.
  The corresponding options `services.ssmtp.*` have been removed as well.
  `programs.msmtp.*` can be used instead for an equivalent setup. For example:

  ```nix
  {
    # Original ssmtp configuration:
    services.ssmtp = {
      enable = true;
      useTLS = true;
      useSTARTTLS = true;
      hostName = "smtp.example:587";
      authUser = "someone";
      authPassFile = "/secrets/password.txt";
    };

    # Equivalent msmtp configuration:
    programs.msmtp = {
      enable = true;
      accounts.default = {
        tls = true;
        tls_starttls = true;
        auth = true;
        host = "smtp.example";
        port = 587;
        user = "someone";
        passwordeval = "cat /secrets/password.txt";
      };
    };
  }
  ```

- `services.kubernetes.addons.dashboard` was removed due to it being an outdated version.

- `services.kubernetes.scheduler.{port,address}` now set `--secure-port` and `--bind-address` instead of `--port` and `--address`, since the former have been deprecated and are no longer functional in kubernetes>=1.23. Ensure that you are not relying on the insecure behaviour before upgrading.

- In the PowerDNS Recursor module (`services.pdns-recursor`), default values of several IP address-related NixOS options have been updated to match the default upstream behavior.