--- a/_postprocess-sdist.py	Sun Feb 23 21:27:48 2025 +0100
+++ b/_postprocess-sdist.py	Sun Feb 23 21:40:37 2025 +0100
@@ -5,18 +5,15 @@
 
 from __future__ import print_function, absolute_import
 
-import ast
 try:
     from configparser import ConfigParser
 except ImportError:
     from ConfigParser import SafeConfigParser as ConfigParser
+import importlib
 import io
 import os
 import tarfile
 
-import cutils
-import cutils.util.walk
-
 
 def main():
     with io.open("setup.cfg", "rt", encoding="utf-8") as cfgfile:
@@ -28,8 +25,14 @@
     project_name = cp.get("metadata", "name")
     project_version = cp.get("metadata", "version")
     if project_version.startswith("attr:"):
-        assert project_version == "attr: cutils.__version__"
-        project_version = ast.literal_eval(repr(cutils.__version__))
+        vermodname, dummy, vermodattr = (project_version[5:]
+                                         .strip()
+                                         .rpartition('.'))
+        assert dummy is not None and vermodattr is not None
+        vermod = importlib.import_module(vermodname)
+        project_version = getattr(vermod, vermodattr)
+    else:
+        assert False
     #
     # Compressed tar files cannot be modified by Python: make sure the
     # originally generated archive is uncompressed.