A SOM VM in Rust. SOM is a cut-down Smalltalk-like language. yksom is eventually intended to be used with Yorick to produce a JIT-compiling VM, though it is currently an entirely stand-alone interpreter. Currently it is partly a test bed to experiment with good ways of structuring Rust interpreters, balancing correctness, performance, and readability. The internal API documentation is available online.

yksom is intended to be source-compatible with other SOM implementations although it implements (uncheckable) exceptions, so that (one day...) errors can cause SOM-level backtraces.