Improve Darwin support

overlays/datadog-api-client.nix

@@ -0,0 +1,20 @@
+{ lib, buildPythonPackage, fetchPypi, pkgs}:
+
+buildPythonPackage rec {
+	pname = "datadog-api-client";
+	version = "2.3.0";
+
+	src = fetchPypi {
+		inherit pname version;
+		sha256 = "";
+	};
+
+	meta = with lib; {
+		description = "Datadog API client support";
+		homepage = "https://github.com/DataDog/datadog-api-client-python";
+		license = licenses.bsd;
+		maintainers = [];
+	};
+
+	doCheck = false;
+}

overlays/default.nix

@@ -1,15 +1,20 @@
 self: super:
 {
-	xonsh-direnv = super.callPackage ./xonsh-direnv.nix {
+	datadog-api-client = super.callPackage ./datadog-api-client.nix {
 		buildPythonPackage = self.python3.pkgs.buildPythonPackage;
 		fetchPypi = self.python.pkgs.fetchPypi;
 	};
 
+	hms = super.callPackage ./hms.nix {
+		pkgs = self.pkgs;
+	};
+
 	xonsh = super.xonsh.overridePythonAttrs (old: rec{
 		propagatedBuildInputs = old.propagatedBuildInputs ++ [ self.xonsh-direnv ];
 	});
 
-	hms = super.callPackage ./hms.nix {
-		pkgs = self.pkgs;
+	xonsh-direnv = super.callPackage ./xonsh-direnv.nix {
+		buildPythonPackage = self.python3.pkgs.buildPythonPackage;
+		fetchPypi = self.python.pkgs.fetchPypi;
 	};
 }

overlays/packages.nix

@@ -0,0 +1,18 @@
+{ pkgs, ... }:
+
+{
+	datadog-api-client = pkgs.callPackage ./datadog-api-client.nix {
+		buildPythonPackage = pkgs.python3.pkgs.buildPythonPackage;
+		fetchPypi = pkgs.python.pkgs.fetchPypi;
+	};
+
+	hms = pkgs.callPackage ./hms.nix {
+		inherit pkgs;
+	};
+
+	xonsh-direnv = pkgs.callPackage ./xonsh-direnv.nix {
+		buildPythonPackage = pkgs.python3.pkgs.buildPythonPackage;
+		fetchPypi = pkgs.python.pkgs.fetchPypi;
+	};
+
+}