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When we update the rust version, we need to update a large list of
hashes for rust-bin, and update the hash for rust (source). This is very
tedious and very error-prone.
Add a helper script that generates the hash files automatically, and
also iupdate the _VERSION in the .mk.
We decided not to carry the hint about the verification of the tarballs
against the upstream GPG signature for three reasons:
- it requires that all the tarballs be downloaded, which can take
quite some time;
- the hash files are available for all the needed archives;
- the hash files are downloaded over https, so if someone managed to
get a hold of the rust server to provide backdoored archives, they
can also change the hash files;
- properly verifying the archives would require a chain of trust
between the person running the upsate script, and the rust GPG key,
which is not a given, and verifying sigantures using an unverified
key is not providing much security, if at all.
Regenerate the hash files with that script.
Note (for the future, maybe): there are manifest files for each release,
https:/static.rust-lang.org/dist/channel-rust-VERSION.toml, that we
could use to generate the RUST_HOSTS and RUST_TARGETS list. However,
adding new hosts or new targets implies updating the corresponding
_ARCH_SUPPORTS and accompanying symbols, so better leave that to a
manual operation, at least for now.
Notes: Many thanks to James for providing an initial script with the
same purpose. Given the feedback from previous reviews, it was simpler
to rewrite it from scratch; it should now be much, much simpler.
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Cc: James Hilliard <james.hilliard1@gmail.com>
Tested-by: James Hilliard <james.hilliard1@gmail.com>
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