For divnix/std#235, std.grow.nixpkgsConfig was made optional. However (at least in my config), nixpkgsConfig is not defined when it's checked for, even if it's set. Instead, I think setting a default of { } should work - as far as I can tell, that's ultimately what it defaults to in nixpkgs.
For divnix/std#235,
std.grow.nixpkgsConfigwas made optional. However (at least in my config),nixpkgsConfigis not defined when it's checked for, even if it's set. Instead, I think setting a default of{ }should work - as far as I can tell, that's ultimately what it defaults to in nixpkgs.