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Re: A pleasant low-hanging fruit

From: Cyril Roelandt
Subject: Re: A pleasant low-hanging fruit
Date: Sun, 10 Mar 2013 18:06:33 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:10.0.12) Gecko/20130116 Icedove/10.0.12

On 03/05/2013 08:47 PM, Ludovic Courtès wrote:

I just had a brain wave and couldn’t resist: commit ef010c0 changes
‘guix package --install’ such that, when installing a GNU package, it
automatically reports the availability of a new upstream version.

So, for instance, if you run it today:

--8<---------------cut here---------------start------------->8---
$ ./pre-inst-env guix package -i idutils -n
[nothing special here]

$ ./pre-inst-env guix package -i gettext -n
gnu/packages/gettext.scm:27:3: note: using gettext- but 
gettext- is available upstream
--8<---------------cut here---------------end--------------->8---

This works well with GNU packages, but breaks other packages:

$ ./pre-inst-env ./scripts/guix package -i w3m
In ice-9/boot-9.scm:
 149: 13 [catch #t #<catch-closure 98682c0> ...]
 157: 12 [#<procedure 98318c0 ()>]
In unknown file:
   ?: 11 [catch-closure]
In ice-9/boot-9.scm:
  63: 10 [call-with-prompt prompt0 ...]
In ice-9/eval.scm:
 407: 9 [eval # #]
In ice-9/boot-9.scm:
2111: 8 [save-module-excursion #<procedure 981e080 at ice-9/boot-9.scm:3646:3 ()>]
3653: 7 [#<procedure 981e080 at ice-9/boot-9.scm:3646:3 ()>]
In unknown file:
?: 6 [load-compiled/vm "/home/cyril/.cache/guile/ccache/2.0-LE-4-2.0/home/cyril/guix/scripts/guix.go"]
In ice-9/boot-9.scm:
 149: 5 [catch srfi-34 #<procedure 9c39f10 at guix/ui.scm:104:2 ()> ...]
 157: 4 [#<procedure 9c101e0 ()>]
In guix/scripts/package.scm:
 722: 3 [#<procedure 9c24660 at guix/scripts/package.scm:715:8 ()>]
 560: 2 [process-actions (# #)]
In srfi/srfi-1.scm:
664: 1 [filter-map #<procedure 9c34270 at guix/scripts/package.scm:588:37 (expr)> ...]
In guix/scripts/package.scm:
 592: 0 [#<procedure 9c34270 at guix/scripts/package.scm:588:37 (expr)> #]

guix/scripts/package.scm:592:39: In procedure #<procedure 9c34270 at guix/scripts/package.scm:588:37 (expr)>: guix/scripts/package.scm:592:39: In procedure string-split: Wrong type argument in position 1 (expecting string): #f


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