NOTE: even though the latest upstream version is 2.1.46 we cannot use
this as every rustracer version technically requires nightly Rust. We
work around this by setting `RUSTC_BOOTSTRAP`, but also have to stick to
older versions where each used "nightly" feature is already in a `rustc`
that's also available in `nixpkgs`.
ZHF #122042Closes#119155
Hydra build: https://hydra.nixos.org/build/142609369
The transmission conflict was non-trivial:
- libbrotli added to apparmor rules <1bdda029cd>
- apparmor rules rewritten <b280e64078>
Chosen the rewrite and verified that brotli is part of the rule set generated by `apparmorRulesFromClosure`.
Also begin to start work on cross compilation, though that will have to
be finished later.
The patches are based on the first version of
https://reviews.llvm.org/D99484. It's very annoying to do the
back-porting but the review has uncovered nothing super major so I'm
fine sticking with what I've got.
Beyond making the outputs work, I also strove to re-sync the packages,
as they have been drifting pointlessly apart for some time.
----
Other misc notes, highly incomplete
- lvm-config-native and llvm-config are put in `dev` because they are
tools just for build time.
- Clang no longer has an lld dep. That was introduced in
db29857eb3, but if clang needs help
finding lld when it is used we should just pass it flags / put in the
resource dir. Providing it at build time increases critical path
length for no good reason.
----
A note on `nativeCC`:
`stdenv` takes tools from the previous stage, so:
1. `pkgsBuildBuild`: `(?1, x, x)`
2. `pkgsBuildBuild.stdenv.cc`: `(?0, ?1, x)`
while:
1. `pkgsBuildBuild`: `(?1, x, x)`
2. `pkgsBuildBuild.targetPackages`: `(x, x, ?2)`
3. `pkgsBuildBuild.targetPackages.stdenv.cc`: `(?1, x, x)`
