XENG-8985 Reference version file directly in pyproject.toml

Author: Jacob Truman

pyproject.toml

@@ -6,7 +6,7 @@ build-backend = "setuptools.build_meta"
 name = "buildrunner"
 description = "Docker-based build tool"
 readme = "README.rst"
-requires-python = ">=3.6"
+requires-python = ">=3.9"
 license = {text = "MIT"}
 authors = [
     {name = "Adobe", email = "[email protected]"}
@@ -18,6 +18,7 @@ dynamic = ["version", "dependencies", "optional-dependencies"]
 [tool.setuptools.dynamic]
 dependencies = {file = ["requirements.txt"]}
 optional-dependencies = {test = { file = ["test_requirements.txt"] }}
+version = {attr = "buildrunner.version.__version__"}
 
 [project.scripts]
 buildrunner = "buildrunner.cli:main"