Drop libevent #385
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Drop libevent #385
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ysbaddaden
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Nov 4, 2025
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ysbaddaden
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Let's get this merged dropped!
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libeventis no longer a required dependency on any major platform. Since release 1.15 (crystal-lang/crystal#14996) we're directly using the system selectors (epoll, kqueue) on Linux, macOS, and FreeBSD. Libevent is still supported, but it needs opt-in via a compile-time flag-Devloop=libevent.It's safe to assume that barely anyone uses that.
So we should be able to remove this library from our distribution artifacts, reducing dependencies and size.
With this change, libevent is still supported, but it's an optional dependency and you have to install it explicitly if you want to use it.
We may want to use libevent in stdlib specs, so I'm adding it to the
-buildimages.