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From: ludo@gnu.org (Ludovic =?utf-8?Q?Court=C3=A8s?=)
Subject: Re: =?utf-8?B?4oCYc25pcHBldOKAmQ==?= in <origin>
Date: Fri, 08 Nov 2013 22:15:14 +0100
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In-Reply-To: <87wqkjavxf.fsf@gnu.org> ("Ludovic
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To: Mark H Weaver <mhw@netris.org>
Cc: guix-devel@gnu.org

ludo@gnu.org (Ludovic Court=C3=A8s) skribis:

> Now, I think we could replace =E2=80=98snippet=E2=80=99 by =E2=80=98phase=
s=E2=80=99.  That field would
> contain an <origin-phases> object with exactly 4 fields: unpack, patch,
> user (default to #f), and repack.
>
> In the LAPACK case, we=E2=80=99d do:
>
>   (origin
>     (uri ...)
>     (sha256 ...)
>     (phases (origin-phases (inherit %standard-origin-phases)
>               (user '(for-each delete-file ...)))))
>
> I think that would address your problem.  The set of phases would be
> fixed, though, unlike what =E2=80=98gnu-build-system=E2=80=99 does, but I=
 think that=E2=80=99s
> fine.

The problem with that is that it makes the semantics less obvious: the
=E2=80=98phases=E2=80=99 field is only used when it has a =E2=80=98user=E2=
=80=99 value other than #f, or
when the origin has a =E2=80=98patches=E2=80=99 field.

It seems that it needs more thought.

Ludo=E2=80=99.