Since the parent mentioned installing using a package manager, could it be default in that case as well as in the `cargo install` case where cargo essentially controls the binary?

If not default, could it be more easily chosen with a shorter option?

Is a rust heap/runtime packaged for distros like Debian which have packaged binaries of some crates?

Note, I'm not in favor of making dynamic default for `cargo build`.

But ABI is not fixed yet, so all libraries and binary must be compiled by same compiler with same options.