Correction of a problem with wheel package.

pyproject.toml

@@ -1,6 +1,9 @@
+[build-system]
+requires = ["setuptools", "wheel"]
+build-backend = "setuptools.build_meta"
+
 [project]
 name = "pyappengine"
-version = "0.1"
 authors = [
   { name="François Dausseur", email="fdausseur@free.fr" },
 ]
@@ -15,5 +18,10 @@ classifiers = [
 dependencies = [
     "systemd-python",
 ]
+dynamic = ["version"]
+
 [project.urls]
 "Homepage" = "https://git.beafrancois.fr/Foue/pyappengine"
+
+[tool.setuptools.dynamic]
+version = {file = ["VERSION"]}