👍 Long term, I hope we can avoid these one-off, yet globally exposed, predicates. But they're fine for now, especially because they're easily triaged since they are all in inspect.nix.

What is inspect.nix? That file has no explanation and the name is not very descriptive.

Also, why do attribute names in that file have initial caps? That's not consistent with our usual attribute naming.

@Ericson2314 Yeah, I think a lot of this stuff should live near the affected package, not here.

Okay, I see there is some nameValuePair ("is" + name) magic. Please don't do that. It makes it impossible to grep for the definition of identifiers.