utils: `set-path-environment-variable' calls `unsetenv' for empty values.
authorLudovic Courtès <ludo@gnu.org>
Sat, 22 Jun 2013 14:42:46 +0000 (16:42 +0200)
committerLudovic Courtès <ludo@gnu.org>
Sat, 22 Jun 2013 14:42:46 +0000 (16:42 +0200)
commitb15669f37daecd9d06e0d4b3c864ecdbb81c9b9c
treefa893fb209bc52b6c0201a6a1cb43bd1e03e6c6b
parentee26820636c2521bb0a15bd960814bafa780635e
utils: `set-path-environment-variable' calls `unsetenv' for empty values.

* guix/build/utils.scm (set-path-environment-variable): When VALUE is
  the empty string, call `unsetenv' instead of `setenv'.
* gnu/packages/guile.scm (guile-2.0)[arguments]: Remove `unsetenv'
  trick.
gnu/packages/guile.scm
guix/build/utils.scm