Correctness of chapter on callPackage

[boblehest]

Hi, thanks for the fantastic resource on all things Nix! I'm reading the chapter on callPackage and I'm wondering if some details are incorrect or misleading:

In the second paragraph it states that the imported file "must be a Derivation or a function that returns a Derivation.", but I don't think the former case is valid (as far as I see, the imported file must be a function). Less importantly, it also states that you should give callPackage a file as input, but this is not the case; directly giving a function is fine too.

The fourth paragraph starts to explain what happens if it the imported file gives a function, leaving me to expect an explanation of the other case to come later, but it never does explain any other cases.

[ryan4yin]

Indeed, I did misunderstand here, I thought callPakcage was similar to import before, but it seems that's not actually the case.

[ryan4yin]

Thanks for the feedback ❤️ I have updated the content. Please take a look when you are free.

[boblehest]

I really like the new text, thank you. :)