Artyom V. Poptsov schreef op za 05-02-2022 om 08:50 [+0300]:
> sorry but libtree refuses to build when I use your patch instead of
> mine:
> 
> --8<---------------cut here---------------start------------->8---
> $ ./pre-inst-env guix build libtree --check --no-offload
> ;;; note: source file /home/avp/src/dist/guix/gnu/packages/linux.scm
> ;;;       newer than compiled
> /home/avp/src/dist/guix/gnu/packages/linux.go
> The following derivation will be built:
>    /gnu/store/2ndjq2b7z1wqwx6mv91ygkslaziz1sw6-libtree-3.0.2.drv
> guix build: error: some outputs of
> `/gnu/store/2ndjq2b7z1wqwx6mv91ygkslaziz1sw6-libtree-3.0.2.drv' are
> not valid, so checking is not possible
> --8<---------------cut here---------------end--------------->8---

I've seen this before (for something non-libtree), IIUC you can only
run '--check' after it has been built (or substituted) for the first
time.

Greetings,
Maxime.