cleanup/remove_nightly_from_makefiles_as_it_is_defined_root-dir-wise

[spital]

cleanup/remove_nightly_from_makefiles_as_it_is_defined_projectwise (WRONG! update -> root-dir-wise)

Useful, as there was a failure yesterday for ARM / aarch64 build, see

rust-lang/rust#118124

and nightly-2023-11-19 had to be used for make BINS=darkfid

[dark-john]

Isn't the point of having this setting to be per-project so that there is fine-grained control on a per-project basis?

Probably best that stable is the default and then nightly (or specific nightly as above) is used only where needed, until those fixes hit stable?

See this related issue which @bobsummerwill hit.

What exactly is the makefile pattern for CARGO meant to be doing?

[spital]

I am not the one to decide what and how neither know answers to your questions.
As of now we need nightly because #![feature(ip)] from lib.rs is not in stable (tried latest 1.74).
I just needed it mainly for the other PR
#239
does not need to be merged in, just use as patch(es)

[spital]

ah, sorry, my bad
s/projectwise/root-dir-wise