How to use epkgs in extraPackages?

[hgl]

Given this definition:

nix-doom-emacs/modules/home-manager.nix

Line 86 in acbf1b7

extraPackages = (epkgs: cfg.extraPackages);

I wonder how to could I make extraPackages use epkgs.vterm In my own nix config?

If it were defined as

extraPackages = cfg.extraPackages; 

I could directly use

extraPackages = epkgs: [ epkgs.vterm ];

How is the current definition supposed to be used for epkgs?

[hgl]

It seems the proper way to enable vterm is like this, from @thiagokokada's nix config

https://github.com/thiagokokada/nix-configs/blob/edc0925c349ecdeda44f55596f8de67566be160c/home-manager/emacs/default.nix#L25-L32

But according to NixOS wiki, something like this should be used:

(emacsPackagesFor emacsPgtkGcc).emacsWithPackages (epkgs: [ epkgs.vterm ])

I guess nix-doom-emacs' way of building vterm takes precedence?

[ckiee]

nix-doom-emacs picks up that doom wants the vterm dependency and adds it to emacsWithPackages. emacsPackagesOverlay is an ..overlay over the package collection it uses. Make sure vterm is enabled in init.el and then add Thiago's snippet if it still doesn't work.

cc #252 because there is some charm in being able to write a comprehensive response once.

[thiagokokada]

It seems the proper way to enable vterm is like this, from @thiagokokada's nix config

https://github.com/thiagokokada/nix-configs/blob/edc0925c349ecdeda44f55596f8de67566be160c/home-manager/emacs/default.nix#L25-L32

But according to NixOS wiki, something like this should be used:

(emacsPackagesFor emacsPgtkGcc).emacsWithPackages (epkgs: [ epkgs.vterm ])

I guess nix-doom-emacs' way of building vterm takes precedence?

The override for vterm is only needed because for some reason vterm gets the wrong Emacs src during building as it is defined in the overlay. I still didn't had time to investigate the issue deeper, so what you see in my config is mostly a workaround.

[ribosomerocker]

Has this question been answered now? Especially with the documentation PR, I feel like this can be closed.