[Nix-dev] break purity

[Oliver Charles]

It's certainly possible, because I just did it with Haskell ;)

https://gist.github.com/ocharles/cbd5d7ce63bb570abb86e655f36435ab

On Fri, Apr 22, 2016 at 7:16 PM stewart mackenzie <setori88 at gmail.com>
wrote:

> Yeah, I'm not so sure it's possible because one cannot copy from a
> precompiled derivation output to a new derivation output, ie copy
> cross derivation.
>
> As these multiple outputs (outputs = [x y z]) are seen as different
> derivations, this cannot happen right?
>
> Have you actually managed to make progress beyond the copying part of
> your example (preConfigure = "cp ${artefacts}/* .'';) in your
> experimentation?
>
> (I'm still thought experimenting)
>
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