ENH: Single-source subpackage name

Author: effigies

setup.cfg

@@ -1,3 +1,6 @@
+[DEFAULT]
+subpackage = TODO
+
 [metadata]
 author = TODO
 author_email = TODO
@@ -7,12 +10,12 @@ description = TODO
 python_requires = >=3.7
 install_requires =
     pydra
-packages = pydra/tasks/TODO
+packages = pydra/tasks/%(subpackage)s
 
 [versioneer]
 VCS = git
 style = pep440
-versionfile_source = pydra/tasks/TODO/_version.py
-versionfile_build = pydra/tasks/TODO/_version.py
+versionfile_source = pydra/tasks/%(subpackage)s/_version.py
+versionfile_build = pydra/tasks/%(subpackage)s/_version.py
 tag_prefix =
 parentdir_prefix =