Drop setuptools_scm in favour of git-props

Author: RKrahl

.github/requirements.txt

@@ -1,4 +1,5 @@
 distutils-pytest
+git-props
 pathlib ; python_version == '2.7'
 pytest >=3.7.0
-setuptools_scm
+setuptools

README.rst

@@ -37,13 +37,13 @@ System requirements
 
 Optional library packages:
 
-+ `setuptools_scm`_
++ `git-props`_
 
-  The version number is managed using this package.  All source
-  distributions add a static text file with the version number and
-  fall back using that if `setuptools_scm` is not available.  So this
-  package is only needed to build out of the plain development source
-  tree as cloned from GitHub.
+  This package is used to extract some metadata such as the version
+  number out of git, the version control system.  All releases embed
+  that metadata in the distribution.  So this package is only needed
+  to build out of the plain development source tree as cloned from
+  GitHub, but not to build a release distribution.
 
 + `distutils-pytest`_ >= 0.2
 
@@ -105,6 +105,6 @@ permissions and limitations under the License.
 .. _PyPI site: https://pypi.org/project/pytest-dependency/
 .. _setuptools: http://pypi.python.org/pypi/setuptools/
 .. _pytest: http://pytest.org/
-.. _setuptools_scm: https://github.com/pypa/setuptools_scm/
+.. _git-props: https://github.com/RKrahl/git-props
 .. _distutils-pytest: https://github.com/RKrahl/distutils-pytest
 .. _Read the Docs site: https://pytest-dependency.readthedocs.io/

setup.py

@@ -21,14 +21,15 @@
 except (ImportError, AttributeError):
     cmdclass = dict()
 try:
-    import setuptools_scm
-    version = setuptools_scm.get_version()
+    import gitprops
+    release = str(gitprops.get_last_release())
+    version = str(gitprops.get_version())
 except (ImportError, LookupError):
     try:
-        from _meta import version
+        from _meta import release, version
     except ImportError:
         log.warn("warning: cannot determine version number")
-        version = "UNKNOWN"
+        release = version = "UNKNOWN"
 
 docstring = __doc__
 
@@ -75,6 +76,7 @@ class meta(setuptools.Command):
     description = "generate meta files"
     user_options = []
     meta_template = '''
+release = "%(release)s"
 version = "%(version)s"
 '''
     def initialize_options(self):
@@ -85,6 +87,7 @@ def run(self):
         version = self.distribution.get_version()
         log.info("version: %s", version)
         values = {
+            'release': release,
             'version': version,
         }
         with Path("_meta.py").open("wt") as f:
@@ -136,7 +139,8 @@ def run(self):
     project_urls = dict(
         Documentation="https://pytest-dependency.readthedocs.io/",
         Source="https://github.com/RKrahl/pytest-dependency",
-        Download="https://github.com/RKrahl/pytest-dependency/releases/latest",
+        Download=("https://github.com/RKrahl/pytest-dependency/releases/%s/"
+                  % release),
     ),
     package_dir = {"": "src"},
     python_requires = ">=3.4",