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bug#38336: closed (‘wine64-staging’ is very expensive to build)

From: GNU bug Tracking System
Subject: bug#38336: closed (‘wine64-staging’ is very expensive to build)
Date: Tue, 03 Dec 2019 09:09:02 +0000

Your message dated Tue, 03 Dec 2019 10:07:35 +0100
with message-id <address@hidden>
and subject line Re: bug#38336: ‘wine64-staging’ is very expensive to build
has caused the debbugs.gnu.org bug report #38336,
regarding ‘wine64-staging’ is very expensive to build
to be marked as done.

(If you believe you have received this mail in error, please contact

38336: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=38336
GNU Bug Tracking System
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--- Begin Message --- Subject: ‘wine64-staging’ is very expensive to build Date: Sat, 23 Nov 2019 00:12:07 +0100 User-agent: Gnus/5.13 (Gnus v5.13) Emacs/26.3 (gnu/linux)

I noticed that ‘wine64-staging’ is our most expensive package to build.
Initially I was surprised because it only has a couple of nodes more in
its <package> object than ‘wine-staging’:

--8<---------------cut here---------------start------------->8---
ludo@ribbon ~/src/guix$ guix graph wine-staging |grep 'label = ' |wc -l
ludo@ribbon ~/src/guix$ guix graph wine64-staging |grep 'label = ' |wc -l
--8<---------------cut here---------------end--------------->8---

However, that single additional node leads to the duplication of the
whole derivation graph on x86_64-linux:

--8<---------------cut here---------------start------------->8---
ludo@ribbon ~/src/guix$ guix graph -t derivation wine-staging |grep 'label = ' 
|wc -l
ludo@ribbon ~/src/guix$ guix graph -t derivation wine64-staging |grep 'label = 
' |wc -l
--8<---------------cut here---------------end--------------->8---

This is because ‘wine-staging’ has a hard-coded ‘#:system "i686-linux"’,
whereas ‘wine64-staging’ is (unsurprisingly :-)) built on x86_64-linux.

(The same problem happens with ‘wine’ vs. ‘wine64’.)

Likewise, ‘guix size wine64’ shows that every dependency appears twice
(one 32-bit, one 64-bit), and thus the total size is twice that of

Rutger, is there something that can be done to avoid this?  Apparently
only JSON files are copied from ‘wine-staging’ into ‘wine64-staging’,
but maybe they refer to 32-bit shared libraries or something?


--- End Message ---
--- Begin Message --- Subject: Re: bug#38336: ‘wine64-staging’ is very expensive to build Date: Tue, 03 Dec 2019 10:07:35 +0100 User-agent: Gnus/5.13 (Gnus v5.13) Emacs/26.3 (gnu/linux)
Hi Rutger,

Rutger Helling <address@hidden> skribis:

> Sorry for the late reply. I'm not really active anymore in Guix
> development for various reasons. 

No problem!

> Wine needs a whole 32-bit dependency chain to be able to run both 32-bit
> and 64-bit code, since a Wine that can only run 64-bit code is
> considered useless. That is why the package is unfortunately so large. I
> don't think there's anything that can be done about that. 
> A couple of binaries are also copied, not just JSON files. That is where
> the 32-bit dependencies come from. 

OK, that’s what I feared.  Case closed, then!

Thanks for your reply,

--- End Message ---

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