I suppose the solution is that the test of unixness vs windowsness should happen at runtime. Crazy.
We place :WINDOWS and :UNIX in *FEATURES* depending on where we end up executing, so forms like
(when (find :unix *features*) (run-process "ls"))
should do the right sorts of things. If you have other suggestions about how to manage this, please make them.
You're doing the right thing. I suppose you're also doing some magic to properly parse C:\foo\bar\ on Windows and /c/foo/bar on Unix.
ASDF just wasn't prepared to that (and neither was XCVB). Please test 2.017.22, I'd like to release it as 2.018, at the end of the month.
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