python3Packages.twine: fix build deps

pkgs/development/python-modules/twine/default.nix

@@ -1,13 +1,13 @@
-{ lib
-, buildPythonPackage
-, fetchPypi
-, pythonOlder
+{ lib, buildPythonPackage, fetchPypi, pythonOlder
+, importlib-metadata
+, keyring
 , pkginfo
-, requests
-, requests_toolbelt
-, tqdm
 , pyblake2
 , readme_renderer
+, requests
+, requests_toolbelt
+, setuptools_scm
+, tqdm
 }:
 
 buildPythonPackage rec {
@@ -20,7 +20,16 @@ buildPythonPackage rec {
     sha256 = "d561a5e511f70275e5a485a6275ff61851c16ffcb3a95a602189161112d9f160";
   };
 
-  propagatedBuildInputs = [ pkginfo requests requests_toolbelt tqdm pyblake2 readme_renderer ];
+  nativeBuildInputs = [ setuptools_scm ];
+  propagatedBuildInputs = [
+    keyring
+    pkginfo
+    pyblake2
+    readme_renderer
+    requests
+    requests_toolbelt
+    tqdm
+  ] ++ lib.optionals (pythonOlder "3.8") [ importlib-metadata ];
 
   # Requires network
   doCheck = false;