FIX: Patch version for smriprep-docker

wrapper/pyproject.toml

@@ -0,0 +1,3 @@
+[build-system]
+requires = ["setuptools", "setuptools_scm"]
+build-backend = "setuptools.build_meta"

wrapper/setup.cfg

@@ -1,5 +1,4 @@
 [metadata]
-version = attr: smriprep_docker.__version__
 url = https://github.com/nipreps/smriprep
 author = The NiPreps developers
 author_email = nipreps@gmail.com

wrapper/setup.py

@@ -1,15 +1,54 @@
-#!/usr/bin/env python
 import sys
+
 from setuptools import setup
+from setuptools.command.build_py import build_py
+from setuptools.command.sdist import sdist
+from setuptools_scm import get_version
 
 # Give setuptools a hint to complain if it's too old a version
 # 30.3.0 allows us to put most metadata in setup.cfg
 # Should match pyproject.toml
 # Not going to help us much without numpy or new pip, but gives us a shot
-SETUP_REQUIRES = ["setuptools >= 30.3.0"]
+SETUP_REQUIRES = ['setuptools >= 30.3.0']
 # This enables setuptools to install wheel on-the-fly
-SETUP_REQUIRES += ["wheel"] if "bdist_wheel" in sys.argv else []
+SETUP_REQUIRES += ['wheel'] if 'bdist_wheel' in sys.argv else []
+
+try:
+    VERSION = get_version(root='..', relative_to=__file__)
+except LookupError:  # PY27 will not be able to build with a correct version, probably
+    # Note that `python setup.py *` will work, but `pip install` generally won't
+    VERSION = '99.99.99'
+
+
+def update_version(target_file, version):
+    with open(target_file) as fp:
+        contents = fp.read()
+    updated = contents.replace('__version__ = "99.99.99"', '__version__ = "%s"' % version)
+    with open(target_file, 'w') as fp:
+        fp.write(updated)
+
+
+class PatchVersionSdist(sdist):
+    def make_release_tree(self, base_dir, files):
+        sdist.make_release_tree(self, base_dir, files)
+        target_file = base_dir + '/smriprep_docker.py'
+        update_version(target_file, VERSION)
+
+
+class PatchVersionBuild(build_py):
+    def run(self):
+        build_py.run(self)
+        target_file = self.build_lib + '/smriprep_docker.py'
+        update_version(target_file, VERSION)
 
 
-if __name__ == "__main__":
-    setup(name="smriprep-docker", setup_requires=SETUP_REQUIRES)
+if __name__ == '__main__':
+    setup(
+        name='smriprep-docker',
+        version=VERSION,
+        setup_requires=SETUP_REQUIRES,
+        cmdclass={
+            'build_py': PatchVersionBuild,
+            'sdist': PatchVersionSdist,
+        },
+    )