Macros Won't Build in no_std about data-encoding HOT 4 CLOSED

Good point. I updated the README and documentation.

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Aaaaand I just read your comment multiformats/rust-multibase#25 (comment)

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The macro doesn't need the alloc feature to work, so it shouldn't be necessary to change its dependencies.

The problem is due to rust-lang/cargo#7915 where cargo leaks features of compile-time dependencies like proc-macro. The current fix is to use the host_dep unstable feature for now until it gets stable. Does this fix your issue?

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@ia0 yes, I was going to close this with my last comment but figured it might be good for anyone else who comes across the problem. Maybe a quick note in the README for the macro lib to prevent others falling into the same hole?

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