Kind: A Modern Proof Language
To me, in terms of the expectations of modern programming, the weird thing about proof languages is that they’re <i>languages</i> in the first place.<p>AFAIK, a lot of proof-language code is machine-generated. And even when it isn’t, the syntax and semantics of these provers seem to be stuck in the era of “one runtime, one language”, where switching languages forces you to switch runtimes, and proof libraries written for different proof languages can’t be used together in the same project because they have different core runtime semantics.<p>Why isn’t there instead a “proof-checker VM” that accepts some formally-specced “proof bytecode” with a formally-specced standard semantics, that 1. is easy for machines to generate, and 2. where these different proof-languages would then be compilers emitting said bytecode?