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bug#19757: ignore trailing slash for `guix gc -d' /gnu/store/...somethin

From: Tomáš Čech
Subject: bug#19757: ignore trailing slash for `guix gc -d' /gnu/store/...something/
Date: Wed, 25 Feb 2015 21:24:45 +0100
User-agent: Mutt/ (2013-10-16)

Sorry for late response.

On Tue, Feb 03, 2015 at 09:57:04PM +0100, Ludovic Courtès wrote:
address@hidden skribis:

Package: guix
Version: 0.8.1

When I invoke `guix gc -d /path', success of the command depends whether /path 
ends with slash or not:

$ guix gc -d /gnu/store/mgqk0kv5jckrd7l5cwj68fp7cz2l4qqj-luajit-2.0.3/
guix gc: error: build failed: path 
`/gnu/store/mgqk0kv5jckrd7l5cwj68fp7cz2l4qqj-luajit-2.0.3/' is not in the Nix 

$ guix gc -d /gnu/store/mgqk0kv5jckrd7l5cwj68fp7cz2l4qqj-luajit-2.0.3
finding garbage collector roots...
cannot read potential root `/var/guix/manifests'
deleting `/gnu/store/73b760g2nr9syhznydgly8r7vl2k9z11-profile'
deleting `/gnu/store/mgqk0kv5jckrd7l5cwj68fp7cz2l4qqj-luajit-2.0.3'
deleting `/gnu/store/trash'
deleting unused links...
note: currently hard linking saves 247.60 MiB

* with the misleading error message it is usability bug
* it should be safe always try to remove slash from the end
* other commands may be affected too and the behaviour should be consistent for 
all commands

What behavior do you think would be appropriate when running, say:

 guix gc -d /gnu/store/mgqk0kv5jckrd7l5cwj68fp7cz2l4qqj-luajit-2.0.3/bin/lua

Should it be equivalent to:

 guix gc -d /gnu/store/mgqk0kv5jckrd7l5cwj68fp7cz2l4qqj-luajit-2.0.3

I would think so, but I’d like to have feedback.

I think so as well.


PS: Make sure to use address@hidden for bug reports.

Sorry about that, I'm still getting used to GNU's bugtracker...

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