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

From: Ludovic Courtès
Subject: bug#19757: ignore trailing slash for `guix gc -d' /gnu/store/...something/
Date: Tue, 03 Feb 2015 21:57:04 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.4 (gnu/linux)

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 
> store
> $ 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.


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