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From: ludo@gnu.org (Ludovic =?utf-8?Q?Court=C3=A8s?=)
Subject: Re: Guix & IPFS
Date: Wed, 24 Oct 2018 15:17:44 +0200
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In-Reply-To: <87va5yoxa0.fsf@ambrevar.xyz> (Pierre Neidhardt's message of
	"Fri, 19 Oct 2018 15:56:23 +0200")
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To: Pierre Neidhardt <mail@ambrevar.xyz>
Cc: Guix-devel <guix-devel@gnu.org>

Hi!

Pierre Neidhardt <mail@ambrevar.xyz> skribis:

>> As discussed before (I think?), builds are performed in an isolated
>> environment without network access=E2=80=94this is one of the measures t=
aken to
>> guarantee build reproducibility and statelessness.
>>=20
>> So what you=E2=80=99re doing here (running =E2=80=9Cgx=E2=80=9D in a der=
ivation) cannot work.
>
> No, the above error comes from the "gx-fetch" code I've just pushed to the
> wip-ipfs branch.  Downloaders obviously have network access, but maybe I'=
ve set
> it up wrong.

To be precise, builders of fixed-output derivations (derivations for
which the hash of the result is known in advance) have network access.

In practice these are downloaders, but it=E2=80=99s because they are
fixed-output derivations that the daemon is more liberal and provides
them with network access.

How did you define =E2=80=98gx-fetch=E2=80=99?

Thanks,
Ludo=E2=80=99.