rust universal build

[catap (Kirill A. Korinsky)]

Right now MacPorts has a sort of loop:

• rust can't be build as +universal because it is used pre-build binaries;
• cargo PG makes all dependencies universal_variant yes by default.

When something is depends on rust/cargo library, it fails on attempt to build universal build.

Because rust is quite popular this days to make libraries, I feel that the right things to do is fix universal builds for cargo-rust chain.

How? I have no idea.

[catap (Kirill A. Korinsky)]

As usual I've created ticket to early and figured out hot to fix it :)

[catap (Kirill A. Korinsky)]

Nope, I was quite wrong: I can't fix it an easy way.

Naive approach is failed inside rust build.

[kencu (Ken)]

If you look back about two years, rust previously did build universal.

it was a bit complicated, and universal building was stripped out when Catalina came out with only x86_64 support.

[catap (Kirill A. Korinsky)]

@kencu and right now we have M1 which can run both: x86_64 and arm64...