error: use decl+proc macro to generate u32 mapping #618
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We only used this for `rustls_result`, and in practice it only saved us having to implement `From<u32>` by hand. That's handy, but comes at the cost of needing to use the nightly toolchain w/ cbindgen so it can expand the macro before generating the `.h`. That wasn't the worst, but a nighty regression that has remained unfixed for months broke this workflow. In sum: life will be easier without the macro. RIP.
They're helpful, but require us to use cbindgen's parse.expand feature which in turn requires nightly, and is broken with nightly since ~April.
Since we have no macros anymore, it's not needed.
This works because cbindgen does not need to expand derive macros to see the enum items, and cbindgen does not care about the existence of `impl From<u32>` for the rust type that the derive outputs.
djc
approved these changes
Oct 27, 2025
cpu
approved these changes
Oct 27, 2025
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This works because cbindgen does not need to expand derive macros to see the enum items, and cbindgen does not care about the existence of
impl From<u32>for the rust type that the derive outputs.On top of #610