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authorMaxim Cournoyer <maxim.cournoyer@gmail.com>2022-08-24 14:40:38 +0200
committerMaxim Cournoyer <maxim.cournoyer@gmail.com>2022-08-24 22:34:45 -0400
commit1c803e63f9560b93afeec9f7342f4413ff3cec46 (patch)
tree0482d40b846cdd02303d2cb89b2f1ed5150ce0ae /gnu/packages/games.scm
parent31339f5f5ffd80f3fca9dbe49990fa3be4234bb5 (diff)
downloadguix-1c803e63f9560b93afeec9f7342f4413ff3cec46.tar.gz
services: configuration: Add a 'maybe-value-set?' procedure.
* gnu/services/configuration.scm (maybe-value-set?): New procedure.
* doc/guix.texi (Complex Configurations): Document it.  Remove comment showing
usage of 'maybe-string' with a default value, which doesn't make sense.

Co-authored-by: Attila Lendvai <attila@lendvai.name>
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