python-cryptography: split python2 package

[ahesford]

If we wanted to, we could set CRYPTOGRAPHY_DONT_BUILD_RUST for "this release only" (which probably means this minor version only) and delay the python3-setuptools_rust addition. That would also prevent the installation of the no-op cryptography.hazmat.bindings._rust module. However, given that Rust is about to become a hard requirement for this package, we might as well just get it done with now.

The python3-pytest-subtests package is only required for checks in python3-cryptography but, given the importance of cryptography, I think it's worth ensuring that those tests pass.

[ahesford]

If setuptools_rust upstream rejects the patch to honor RUSTFLAGS in the environment, either we patch anyway or we work around its tendency to overwrite that variable by wrapping cargo for cross builds of python3-cryptography:

pre_configure() {
	if [ "$CROSS_BUILD" ]; then
		cat > ${XBPS_WRAPPERDIR}/cargo <<-EOF
		#!/bin/bash
		if [[ ! "\$RUSTFLAGS" =~ "--sysroot" ]]; then
		    export RUSTFLAGS="\$RUSTFLAGS --sysroot=${XBPS_CROSS_BASE}/usr"
		fi
		exec /usr/bin/cargo "\$@"
		EOF
		chmod 755 ${XBPS_WRAPPERDIR}/cargo
	fi
}

[ericonr]

I strongly prefer the patch to setuptools_rust.

[ericonr]

We might not have to patch the package, PyO3/setuptools-rust#103 can be included in the next release :)

[ahesford]

Closed in 76988cd