overriding-dask.nix

with import <nixpkgs> {};

(let

my-python =
  let packageOverrides = self: super: {
    dask = super.dask.overridePythonAttrs (old: rec {
      version = "2.15.0";
      src = super.fetchPypi {
        inherit (old) pname;
        inherit version;
        sha256 = "17bca7rdrkvwf8yib7g58hsd7yrmfaslnq10vm9sw9lzcyszl7li";
      };
      doCheck = false;
    });
  };
  in pkgs.python3.override {
    inherit packageOverrides;
    self = my-python;
  };

in

my-python.withPackages (ps: [ps.dask])).env