Make genproto
a cfg
flag instead of a feature
#17
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Previously, the build dependencies of the
genproto
feature weren't optional, so they were built even when not required, leading to some breakage downstream (see lightningdevkit/ldk-node#197 and lightningdevkit/ldk-node#207).However,
genproto
arguably generally shouldn't be a user-facing feature of this crate, but is rather better hidden behind acfg
flag. Here, we do exactly that, also fixing the issue mentioned above.(cc @G8XSU)