I have a Dyalog APL implementation since 1 year or more on my fork, but still haven't released it because for reasons related to the input/output handling it cannot pass the self hosting tests :(
To make the other tests pass, i wrapped the interpreter in a shell scripts that merges stdout and street, and that did the job for all bit the last step (self hosting).
The self hosting interpreter (albeit very slow), appears to be working correctly when used interactively
