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El lun, 08-02-2021 a las 12:19 +0100, Michał Górny escribió: |
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> Hi, |
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> |
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> FYI the developers of dev-python/cryptography decided that Rust is going |
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> to be mandatory for 1.5+ versions. It's unlikely that they're going to |
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> provide LTS support or security fixes for the old versions. |
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> |
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> Since cryptography is a very important package in the Python ecosystem, |
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> and it is an indirect dependency of Portage, this means that we will |
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> probably have to entirely drop support for architectures that are not |
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> supported by Rust. |
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> |
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> According to upstream platform support information [1], this probably |
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> means (eventually) entirely removing the following architectures: |
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> - alpha (stable) |
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> - hppa (stable) |
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> - ia64 (stable) |
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> - m68k (exp) |
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> - s390 (except for s390x, exp) |
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> |
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> Furthermore, the Gentoo Rust packages are missing support |
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> for the following platforms, apparently supported upstream: |
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> - mips (exp) |
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> - ppc (32) (stable) |
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> - sparc (stable) |
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> - s390x (exp) |
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> - riscv (stable) |
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> |
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> Apparently it's non-trivial to bootstrap Rust on these platforms, |
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> so it's unclear when Gentoo is going to start providing Rust on them. |
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> |
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> I've raised a protest on the cryptography bug tracker [2] but apparently |
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> upstream considers Rust's 'memory safety' more important than ability to |
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> actually use the package. |
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> |
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> Honestly, I don't think it likely that Rust will gain support for these |
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> platforms. This involves a lot of work, starting with writing a new |
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> LLVM backend and getting it accepted (getting new code into LLVM is very |
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> hard unless you're doing that on behalf one of the big companies). You |
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> can imagine how much effort that involves compared to rewriting the new |
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> code from Cryptography into C. |
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> |
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> If we can't convince upstream, I'm afraid we'll either have to drop |
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> these architectures entirely or fork Cryptography. |
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> |
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> |
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> [1] https://doc.rust-lang.org/nightly/rustc/platform-support.html |
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> [2] https://github.com/pyca/cryptography/issues/5771 |
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> |
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|
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It will also affect non-SSE2 x86 setups as upstream is neither providing |
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prebuilt package for them :/ |
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|
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https://bugs.gentoo.org/741708 |
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