For example:
(doom! :feature (version-control +git))
I leave it to modules to interpret these flags, and they can be detected
through one of the following:
+ (featurep! :feature version-control +git)
+ (featurep! +git) -- syntactic sugar, only available from within
modules.
+ (doom-module-flags :feature version-control) -- returns a list of
flags for this module.
Flags are also available from packages.el files.