This version bump requires significant changes because
python-cryptography is now partially implemented in Rust.
This means that:
- The C++ dependency is no longer needed.
- We need to ensure we are on an architecture where Rust is
available (BR2_PACKAGE_HOST_RUSTC_TARGET_ARCH_SUPPORTS)
- Almost all Python dependencies are no longer relevant, except for
the python-cffi.
- A number of environment variables are needed to make the Rust part
build correctly.
- We need to invoke the "cargo" download post-process hook to vendor
the Cargo dependencies at download time.
- We need to propagate to relatively significant reverse dependency
tree the changes of dependencies on python-cryptography.
Co-developed-by: James Hilliard <james.hilliard1@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
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