So making the primitives return ByteArray instances instead of ByteString should be safe enough :).

But this is in my opinion clearly a hack instead of fixing the real problem, and we have to be careful to guard such patterns with comments everywhere explaining why the bytearray conversion is really needed there���

Would it be helpful to have getenv primitives that answer ByteArray
instead, and to let all conversion (including in OSProcess) be done in
the image?

Well, personally I would like that getenv/setenv and getcwd setcwd support are not in a plugin but as a basic service provided by the vm.

Cheers,

Guille

 

Thanks,
Dave

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Guille Polito Research Engineer Centre de Recherche en Informatique, Signal et Automatique de Lille CRIStAL - UMR 9189 French National Center for Scientific Research - http://www.cnrs.fr Web: http://guillep.github.io Phone: +33 06 52 70 66 13