use setuptools-scm to version wheel2deb

Author: Simon

.gitignore

@@ -1,3 +1,6 @@
+# version.py is managed by setuptools-scm
+src/_wheel2deb/version.py
+
 # Byte-compiled / optimized / DLL files
 __pycache__/
 *.py[cod]

Makefile

@@ -27,7 +27,7 @@ images: bdist
 check:
 	@flake8 src
 
-tests:
+tests: bdist
 	$(eval images := $(foreach a,$(DEBIAN_DISTS),wheel2deb:$(a)))
 	$(call map,run_tests,$(images))
 
@@ -49,7 +49,7 @@ endef
 
 define run_tests
 	docker run -ti -v $(CURDIR):/data --entrypoint "" $(1) /bin/bash -c " \
-		pip install -e . \
+		pip install dist/*.whl \
 		&& rm -rf testing/__pycache__ \
 		&& py.test --cov";
 endef

setup.py

@@ -1,8 +1,5 @@
 from setuptools import setup
 
-with open('src/_wheel2deb/version.py') as f:
-    exec(f.read())
-
 INSTALL_REQUIRES = [
     'setuptools',
     'wheel',
@@ -14,8 +11,17 @@
     'pyyaml'
 ]
 
-setup(setup_requires=['setuptools>=38.6.0'],
+version_template = """\
+# coding: utf-8
+# file generated by setuptools_scm
+# don't change, don't track in version control
+__version__ = {version!r}
+"""
+
+setup(setup_requires=['setuptools-scm', 'setuptools>=38.6.0'],
+      use_scm_version={
+          'write_to': 'src/_wheel2deb/version.py',
+          'write_to_template': version_template},
       package_dir={'': 'src'},
       install_requires=INSTALL_REQUIRES,
-      include_package_data=True,
-      version=__version__)
+      include_package_data=True)