Can't get ameba to compile on macOS 12.6 about ameba HOT 6 CLOSED

Ideally, ameba shouldn't depend on libcrypto. A native Crystal implementation would be much easier and avoid an unnecessary dependency. Stdlib currently has no crypographic hash algorithm implemented in native Crystal, though.

But the only use of Digest in ameba is this:

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@tjbarber i don't think it is related to M1 / macOS 12.6. I have the same setup and it compiles successfully on my end.

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That's a problem with your crystal installation, there's nothing to do here from the ameba's side.

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@tjbarber It looks like you're either missing libcrypto or the version you have installed is incompatible. You can get assistance for this problem at https://forum.crystal-lang.org/ or in one of the community chats (https://crystal-lang.org/community/#chat).

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@veelenga @Sija The problem is likely caused by a missing lib dependency.
But there's actually no mention in the installation instructions that ameba requires libcrypto. It does so by using Digest::SHA1 which is based on OpenSSL. So it's not a direct dependency, but through stdlib. Still, libcrypto is an optional dependency for stdlib and applications that use it should better mention that for complete installation instructions.

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@straight-shoota Good catch, thanks! We definitely shouldn't depend on libcrypto, I can prepare a PR fixing that.

ftr, this dependency was silently introduced in #248.

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