Support beta cli versions in nix/home-manager

[joshuata]

op CLI version

2.30.3 (nixpkgs)

Goal or desired behavior

I would like to be able to use the beta terraform plugin with my home-manager setup.

Current behavior

I cannot currently add the terraform plugin since the nix module automatically installs the release version, and there is no beta version available in nixpkgs.

Many other home-manager modules allow you to specify the package you would like to use, which would be a good step in the right direction

Relevant log output