Re: [PROPOSAL] Builder, a build system integration for Emacs

[Gregory Heytings]

> This is not the case with a C compiler.  For example, I can compile most 
> C and C++ software currently in existence with GCC 4.0.  And most such 
> software will also work fine GCC 13.1.
>
> Could you do the same with a Rust compiler from 2006, or even 2015?

Your claim that Rust is not backward compatible being wrong, you now 
suggest that it should be forward compatible as well?  It isn't, of 
course, otherwise the language would be frozen.  And why would compiling 
recent programs with old versions of the compiler be useful, when all you 
have to do is to install a more recent version of the compiler?  Being 
able to compile old programs with a recent version of a compiler is, in 
practice, way more useful than being able to compile recent programs with 
an old version of a compiler.