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authorChristopher Baines <mail@cbaines.net>2017-01-15 09:00:59 +0000
committerLudovic Courtès <ludo@gnu.org>2017-01-16 11:03:26 +0100
commit7d8b59139a5adeaed3f72b4e5e4749a13a77300b (patch)
treebdd145515d1dc55eed1cd4dc89a41df175930d49 /tests/guix-gc.sh
parent4ec840917c781faa4179c79258b91776a4e2444c (diff)
downloadguix-7d8b59139a5adeaed3f72b4e5e4749a13a77300b.tar.gz
services: Export 'service-extension' procedures.
* gnu/services.scm: Export service-extension-target and
service-extension-compute.  This allows for greater extensiblity of services
by enabling service extensions to be wrapped.  For example, the parameters
passed to the compute function can be modified, or the return value of the
compute function can be modified.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>
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