Per user home-manager.extraSpecialArgs nixos module option.

[majkrzak]

I was trying to implement multi host, multi user configuration. I have some modules dependent on host and user extraSpecialArgs. This works well for standalone home-manager installation, but fails on nixos module one, where this can only be specified for all users: https://home-manager.dev/manual/25.11/nixos-options.xhtml#nixos-opt-home-manager.extraSpecialArgs

At least in my case it would be useful to have it possible to inject it per user configuration.

[teto]

you can pass an attribute with the user prefix in extraSpecialArgs. Or create a module and configure at the user level.

[majkrzak]

you can pass an attribute with the user prefix in extraSpecialArgs

Can you provide an example?

Or create a module and configure at the user level.

This tends to cause some problems for example on conditional imports

[teto]

extraSpecialArgs = {
   perUserConfigs = {
       majkrzak = { ... };
       user2 = {...};
     };
     }

This tends to cause some problems for example on conditional imports

try with lib.mkIf

[majkrzak]

lib.mkIf fails if as imports can not be a "thunk". Regular if is the option, but then the param can not depend on config. Using config.something or providing extra arg via the config._module.args causes infinite recursion error.
About perUserConfigs i'm not sure how to access it. It does not seems to be documented also.