[bug#54906] [PATCH] build: go-build-system: Add support for #:skip-build? #t.

[Maxime Devos]

Attila Lendvai schreef op wo 13-04-2022 om 14:00 [+0200]:
> This mimics the same feature of the cargo-build-system.
> 
> * guix/build-system/go.scm (go-build): Add skip-build? keyword param and
> propagate it.
> * guix/build/go-build-system.scm (build): Add skip-build? keyword param.

The new WIP antioxidant-build-system (intended to replace cargo-build-
system) will not have #:skip-build?, because the new build system
actually reuses the build results off the dependents.

Likewise, maybe long-term someone will figure out how to do something
similar for go -- e.g.,
https://debbugs.gnu.org/cgi/bugreport.cgi?bug=32919#5 mentions a ‘go
build cache’.

So it seems more of a work-around than a feature to me.

Maybe after building, the new cache entries could be copied to an
output, and before building, the cache could be populated by old cache
entries from dependents?  That would allow for only having to compile
the dependencies only once, reusing them for all dependents.

Greetings,
Maxime

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