Simon Tournier <zimon.toutoune@gmail.com> writes:

> I think ’nss’ is substitutable, so I guess you are rebuilding from
> source, right?
>
> Well, the build of ’nss’ works for me.
>
> --8<---------------cut here---------------start------------->8---
> $ guix build /gnu/store/8379qa0y6s7ssjr8gplm5fyw9r5pnxhn-nss-3.99.0.drv --check
>
> [...]
>
> successfully built /gnu/store/8379qa0y6s7ssjr8gplm5fyw9r5pnxhn-nss-3.99.0.drv
> guix build: error: derivation
> `/gnu/store/8379qa0y6s7ssjr8gplm5fyw9r5pnxhn-nss-3.99.0.drv' may not
> be deterministic: output
> `/gnu/store/wkdc0z86av7jfkig7g4xphp6k52y82am-nss-3.99.0' differs
> --8<---------------cut here---------------end--------------->8---
>
> Hum, I do not know what could be the origin of the failure.  Maybe on
> your side (free space).  Or maybe hardware specific?

See https://issues.guix.gnu.org/70663 , that nss derivation is really
hard to build so it's not surprising it failed.

The issue is now fixed on master.