From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ricardo Wurmus <ricardo.wurmus@mdc-berlin.de>
Subject: Re: Version numbers for VCS snapshots
Date: Thu, 21 Jan 2016 10:40:41 +0100
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To: Leo Famulari <leo@famulari.name>
Cc: guix-devel@gnu.org


Leo Famulari <leo@famulari.name> writes:

> That sounds good to me. There was some discussion of how much of the
> hash to keep here:
> http://lists.gnu.org/archive/html/guix-devel/2015-12/msg00136.html
>
> I like this method that I've seen in some of the packages, because it
> keeps the version tidy while preserving the full hash:
>
> --8<---------------cut here---------------start------------->8---
> (define-public hello
>   (let ((commit "e8e46123cfe62170a2f7f79db6b471b66ae36947"))
>     (package
>       (name "hello")
>       (version (string-append "2.10-1" (string-take commit 8)))
>       (source (origin
>                 (method git-fetch)
>                 (uri (git-reference
>                        (url "git://git.sv.gnu.org/hello.git")
>                        (commit commit)))
>                 (sha256
>                 [...]
> --8<---------------cut here---------------end--------------->8---

I like this approach (though I=E2=80=99ve been taking 9 characters of the=
 commit
;)).

~~ Ricardo