LLVM and Rust note

APX-LLVM-RUST.md

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+LLVM and RUST NOTES
+===================
+
+At least currently, the inclusion of the `rustc` compiler (and the llvm
+dependency) is purely for the build system. For example, the python
+cryptography package requires a rust compiler to build.
+
+Hobbyists and users who need LLVM and/or rust should *probably* build
+their own rather than use the packages, perhaps if there is enough demand
+then a repository could be spawned for it with better build options to
+suit the needs of those who use them.
+
+Rust requires an OpenSSL API to build (maybe can be disabled?) and has
+not yet caught up with LibreSSL 3.7.2.
+
+That will happen apparently in July with the changes already queued for
+the [1.71.0](https://github.com/rust-lang/rust/pull/110951) build of
+rustc.
+
+However for me that is a bit problematic. If it takes that long for a
+new stable series of LibreSSL to be supported in the released version
+of rustc even though support has been added in a development branch,
+then I may need to learn how to merge the development changes into the
+released version. It is also problematic because sometimes newer versions
+of rustc break the ability to build something and built just fine with
+an earlier version of rustc.
+
+I do __not__ want to be forced to delay adopting a new LibreSSL version
+just because a package intended for the build system does not yet have
+support for it.
+
+It looks like a rust compiler is coming to GCC and may even be usable
+by the GCC 14 series---which I suspect will be out before I have a YJL
+installer.
+
+As far as compiling the python cryptography package, hopefully using
+a GCC rust compiler when it is ready would be good enough.
+
+For the present, there will not be an installer by July 2023 so waiting
+for rustc 1.71.0 at present is not *too* problematic.