Homepage: https://leanprover.github.io/
Source: https://github.com/leanprover/lean4
Wikipedia: https://en.wikipedia.org/wiki/Lean_(proof_assistant)
Scala's syntax is anyway quite similar already, but would need proper Unicode support and some other "tuning" like the `:=` and the `let monadic ← effect` syntax, imho.
Homepage: https://leanprover.github.io/
Source: https://github.com/leanprover/lean4
Wikipedia: https://en.wikipedia.org/wiki/Lean_(proof_assistant)