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Subject: [bug#36630] [PATCH] guix: parallelize building the manual-database
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From: Ludovic =?UTF-8?Q?Court=C3=A8s?= <ludo@gnu.org>
References: <20190712214245.23857-1-arne_bab@web.de> <878sszl1jo.fsf@gnu.org>
 <877e8ig9gh.fsf@web.de> <87zhldel6f.fsf@gnu.org>
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Date: Thu, 18 Jul 2019 15:46:18 +0200
In-Reply-To: <87k1cfpq0k.fsf@web.de> (Arne Babenhauserheide's message of "Thu,
 18 Jul 2019 12:59:23 +0200")
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To: Arne Babenhauserheide <arne_bab@web.de>
Cc: 36630@debbugs.gnu.org

Arne Babenhauserheide <arne_bab@web.de> skribis:

> Ludovic Court=C3=A8s <ludo@gnu.org> writes:
>
>> Did you try the =E2=80=98guix environment -n=E2=80=99 command above?  Do=
esn=E2=80=99t it show
>> the manual-database.drv?
>
> It does show the manual database, but then running guix build
> /gnu/....drv --check does not run my changed code.
>
> I=E2=80=99m doing
>
> time ./pre-inst-env guix build /gnu/store/jnkxwwxk71n07fs6naa11fxmg3vpnnb=
3-manual-database.drv --check
>
> But it runs the installed guix, not the local changes to profile.scm.

Right, sorry for being unclear: you need to run

  ./pre-inst-env guix environment -n =E2=80=A6

That will run you modified code and thus create a manual-database.drv
that uses your code; it=E2=80=99s this manual-database.drv that you should =
pass
to =E2=80=98guix build=E2=80=99.

HTH,
Ludo=E2=80=99.