I wrote:

> 
> I think this is also true now even when the build/ directory is not cleared 

> before every > test run (but still with separate test directories for each OS).

>  I'll confirm this and report by tomorrow morning if this turns out not to be true. 

>

Indeed all the tests still pass when run again without first clearing the build/ directory (but still with separately cloned asdf/ directories for each OS, as implemented in attached "run" script -- I haven't tried (and don't dare try) mashing together the test runs for different OSs into the same asdf directory (as the test harness is specifically not designed to work that way).