nixpkgs/nixos/modules/programs/gphoto2.nix

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{ config, lib, pkgs, ... }:
with lib;
{
meta.maintainers = [ maintainers.league ];
###### interface
options = {
programs.gphoto2 = {
enable = mkOption {
default = false;
type = types.bool;
description = ''
Whether to configure system to use gphoto2.
To grant digital camera access to a user, the user must
be part of the camera group:
<code>users.users.alice.extraGroups = ["camera"];</code>
'';
};
};
};
###### implementation
config = mkIf config.programs.gphoto2.enable {
services.udev.packages = [ pkgs.libgphoto2 ];
environment.systemPackages = [ pkgs.gphoto2 ];
users.groups.camera = {};
};
}