From mboxrd@z Thu Jan  1 00:00:00 1970
From: sleep_walker@suse.cz
Subject: ignore trailing slash for `guix gc -d' /gnu/store/...something/
Date: Tue, 3 Feb 2015 00:34:26 +0100
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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