On Fri, Jun 30, 2017 at 10:49 AM, Peter Simons <sim...@nospf.cryp.to> wrote:
> Hi Domen, > > > callHackage will generate Nix expression on each call, which does > > bring some overhead. > > I'm pretty sure that it won't do that. Unless the generated expressions > are garbage collected, they won't be re-built. > > That was my point, you generate new Nix files additionally. Regardless, afaik it doesn't resolve the need for `cabal update`. stack2nix uses hnix to modify the cabal2nix output a bit, to strip out test dependencies, so until this approach is taken, we can't use callHackage.
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