servant/nix/shell.nix

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{ compiler ? "ghc8104"
, tutorial ? false
, pkgs ? import ./nixpkgs.nix
}:
with pkgs;
let
ghc = haskell.packages.${compiler}.ghcWithPackages (_: []);
docstuffs = python3.withPackages (ps: with ps; [ recommonmark sphinx sphinx_rtd_theme ]);
in
stdenv.mkDerivation {
name = "servant-dev";
buildInputs = [ ghc zlib python3 wget cabal-install postgresql openssl stack haskellPackages.hspec-discover ]
++ (if tutorial then [docstuffs postgresql] else []);
shellHook = ''
eval $(grep export ${ghc}/bin/ghc)
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:"${zlib}/lib";
'';
}