Comment # 2 on bug 1210176 from Wolfgang Rosenauer

Trying to build using an older llvm version is something which has been done
but still failed since llvm16 is pulled in no matter and is being used. I think
it was a dependency that something requires clang-tools and clang-tools
requires llvm16. (Or something like that)

fvogt pointed me to this patch:
https://github.com/rust-lang/rust-bindgen/pull/2319

After I added it to the package the original issue is gone and TB builds for
i586. But it fails on x86-64 now with

thread 'main' panicked at 'Not able to resolve vector element?: Continue',
third_party/rust/bindgen/src/ir/ty.rs:1170:22