bug: programs.ssh.matchBlocks fails to build

[Sgiath]

Are you following the right branch?

• My Nixpkgs and Home Manager versions are in sync

Is there an existing issue for this?

• I have searched the existing issues

Issue description

After I updated the Home Manager to the latest version (nixpkgs unstable, HM master) I am getting this error:

       error: The option `home-manager.users.sgiath.programs.ssh.matchBlocks' has a type `DAG of submodule' that uses
       an ad-hoc `type // { check = ...; }' override, which is incompatible with
       the v2 merge mechanism.

       Please use `lib.types.addCheck` instead of `type // { check }' to add
       custom validation. For example:

         lib.types.addCheck baseType (value: /* your check */)

       instead of:

         baseType // { check = value: /* your check */; }

I am an user of NixOS and HM but I do not write the definitions that much. So I am not sure what is wrong but it seems like the issue is with how the ssh module is written inside HomeManager, not in my own configuration. Anyway here is my config for reference that worked up until last week:
https://git.sr.ht/~sgiath/nixos-config/tree/master/item/modules/home/sgiath/ssh.nix

Maintainer CC

@rycee

System information

$ nix-shell -p nix-info --run "nix-info -m"
 - system: `"x86_64-linux"`
 - host os: `Linux 6.17.4-xanmod1, NixOS, 25.11 (Xantusia), 25.11.20251025.6a08e6b`
 - multi-user?: `yes`
 - sandbox: `yes`
 - version: `nix-env (Nix) 2.32.1`
 - nixpkgs: `/nix/store/jd3y5kfy3ywv9lc229nz8vxqbrcyv93d-source`

[Sgiath]

I have updated HM and nixpkgs-unstable again today to the latest version and now it builds. I don't see any changes to SSH module so my assessment was probably wrong. Anyway the issue can be probably closed so I am closing it now since it is no longer an issue.