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Feb 24th, 2018
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  1. let
  2. pkgs = import <nixpkgs> {};
  3. hp = pkgs.haskellPackages;
  4. mkHaskellShell = tools: drv: drv.env.overrideAttrs
  5. (oldAttrs : {buildInputs = oldAttrs.buildInputs ++ tools; });
  6. localPackage = hp.lens;
  7. in
  8. mkHaskellShell [hp.hlint] localPackage
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