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From: ludo@gnu.org (Ludovic =?utf-8?Q?Court=C3=A8s?=)
Subject: New CLI syntax for package version
Date: Sat, 09 Jan 2016 22:26:22 +0100
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In <http://bugs.gnu.org/19219>, we came to the conclusion that we need a
new syntax to denote a specific package version on the command line.

The current syntax is described in the manual (info "(guix) Invoking
guix package").  Basically, =E2=80=98guile-1.8=E2=80=99 refers to version 1=
.8.x of
Guile; however, this syntax has proved to be ambiguous for packages
whose name contains digits.

For the new syntax, the proposals so far are:

  1. slash, <http://debbugs.gnu.org/cgi/bugreport.cgi?bug=3D19219#25>

     guile:1.8/doc
     xterm-256-color:320
     emacs:24.5/out

  2. underscore, <http://debbugs.gnu.org/cgi/bugreport.cgi?bug=3D19219#28>

     emacs_24.5:out

  3. at, <http://debbugs.gnu.org/cgi/bugreport.cgi?bug=3D19219#31>

     guile@1.8
     guile@1.8:doc

What do people think?

Ludo=E2=80=99.