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Re: Version numbers for VCS snapshots


From: Ludovic Courtès
Subject: Re: Version numbers for VCS snapshots
Date: Thu, 21 Jan 2016 22:05:36 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.5 (gnu/linux)

Leo Famulari <address@hidden> skribis:

> On Thu, Jan 21, 2016 at 10:40:41AM +0100, Ricardo Wurmus wrote:
>> 
>> Leo Famulari <address@hidden> 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’ve been taking 9 characters of the commit
>> ;)).
>
> I like 10 but I wanted to match your example upthread ;)

I prefer 7!  This is how Git usually truncates SHA1s, so it can’t be wrong.

Ludo’.



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