Re: Building Guix with Guile 2.1

[Ludovic Courtès]

Hi!

address@hidden (Taylan Ulrich "Bayırlı/Kammer") skribis:

> Andy Wingo <address@hidden> writes:
>
>> On Wed 21 Sep 2016 23:01, address@hidden (Taylan Ulrich "Bayırlı/Kammer") 
>> writes:
>>
>>> By the way, compile time seems to increase greatly with 2.2, to the
>>> point I wondered if it's really compiling in parallel, but it does seem
>>> to as evidenced by top(1).  Maybe package modules could be compiled with
>>> certain optims turned off, since they mostly just consist of package
>>> object definitions and not procedures whose performance would matter.
>>
>> How much?
>
> Running make, then make clean-go, then 'time make', we get:
>
> Guile 2.0:
> real  2m46.405s
> user  6m39.044s
> sys   0m2.140s
>
> Guile 2.2:
> real  31m44.433s
> user  84m32.060s
> sys   0m10.880s

[...]

> Using optim level 1, compilation takes the same amount of time *and* I
> get a segfault at the end.  When re-running make, it finishes by
> compiling only gnu/packages/python.go (indicating that all other .go
> files were compiled successfully on the first run), and this time
> succeeds without a segfault.
>
> Using optim level 0, it seems to hang at gnu/packages/shells.go.  (More
> precisely, I aborted after a total of 118 minutes, most of which was
> spent waiting for shells.go to finish.)

This sounds a bit concerning.  Any idea what’s going on?

I think we should make sure we have a way to build with 2.2 in at most
the same amount of time as with 2.0.  (Easier said than done!  ;-))

Ludo’.