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