Re: [PATCH] build: Speed up .go compilation.

[Taylan Ulrich Bayırlı/Kammer]

address@hidden (Ludovic Courtès) writes:

> address@hidden (Taylan Ulrich "Bayırlı/Kammer") skribis:
>
>> It should have the same improvement as 'guix pull' since it does
>> basically the same thing.  I measured to make things concrete, and on my
>> machine the run time of 'make -j4' decreases from ~26m to ~6m.
>
> On my 4-core machine, it takes a bit less than 2mn.

OK, this is weird.  Something I did, sadly I don't know anymore what,
seems to have lead to .go files related to Guix's source tree being
cached in my $XDG_CACHE_HOME, after which running 'make -j4' in a clean
(but not newly cloned) repo indeed took only about 3 minutes.  I noticed
from lines like:

;;; note: source file ./guix/config.scm
;;;       newer than compiled 
/home/taylan/.cache/guile/ccache/2.0-LE-8-2.0/home/taylan/src/guix/build/guix/config.scm.go

Could it be that the same is the case for you?

Is this actually normal and I've been missing out the whole time? :-)
Maybe something in my setup/workflow while building guix gets in the way
of proper caching.

Taylan