replaced setup.py with setup.cfg file

modified .gitlab-ci.yml file to strip away "v" from git describe 
<commit> result

.gitlab-ci.yml

@@ -233,7 +233,8 @@ update_revision:
     - cd $(mktemp -d)
     - git clone -q git@git.damask.mpie.de:damask/DAMASK.git .
     - git pull
-    - export VERSION=$(git describe ${CI_COMMIT_SHA})
+    - VERSION=$(git describe ${CI_COMMIT_SHA})
+    - export VERSION="${VERSION:1:-1}"
     - echo ${VERSION} > python/damask/VERSION
     - >
        git diff-index --quiet HEAD ||

python/setup.cfg

@@ -0,0 +1,31 @@
+[metadata]
+name = damask
+version = file: damask/VERSION
+author = The DAMASK team
+author_email = damask@mpie.de
+url = https://damask.mpie.de
+description = DAMASK processing tools
+long_description = Pre- and post-processing tools for DAMASK
+license: AGPL3
+classifiers =
+    Intended Audience :: Science/Research
+    Topic :: Scientific/Engineering
+    Programming Language :: Python :: 3
+    License :: OSI Approved :: GNU Affero General Public License v3 or later (AGPLv3+)
+    Operating System :: OS Independent
+
+[options]
+packages = damask
+zip_safe = false
+include_package_data = true
+python_requires = >= 3.8
+install_requires =
+    importlib-metadata; python_version<"3.8"
+    pandas; python_version<="0.24"                                                                           # requires numpy
+    numpy; python_version<="1.17"                                                                            # needed for default_rng
+    scipy; python_version<="1.2"
+    h5py; python_version<="2.9"                                                                              # requires numpy
+    vtk; python_version<="8.1"
+    matplotlib; python_version<="3.0"                                                                        # requires numpy, pillow
+    pyyaml; python_version<="3.12"
+setup_requires = setuptools

python/setup.py

@@ -1,36 +0,0 @@
-import setuptools
-from pathlib import Path
-import re
-
-# https://www.python.org/dev/peps/pep-0440
-with open(Path(__file__).parent/'damask/VERSION') as f:
-    version = re.sub(r'(-([^-]*)).*$',r'.\2',re.sub(r'^v(\d+\.\d+(\.\d+)?)',r'\1',f.readline().strip()))
-
-setuptools.setup(
-    name='damask',
-    version=version,
-    author='The DAMASK team',
-    author_email='damask@mpie.de',
-    description='DAMASK processing tools',
-    long_description='Pre- and post-processing tools for DAMASK',
-    url='https://damask.mpie.de',
-    packages=setuptools.find_packages(),
-    include_package_data=True,
-    python_requires = '>=3.8',
-    install_requires = [
-        'pandas>=0.24',                                                                             # requires numpy
-        'numpy>=1.17',                                                                              # needed for default_rng
-        'scipy>=1.2',
-        'h5py>=2.9',                                                                                # requires numpy
-        'vtk>=8.1',
-        'matplotlib>=3.0',                                                                          # requires numpy, pillow
-        'pyyaml>=3.12'
-    ],
-    classifiers = [
-        'Intended Audience :: Science/Research',
-        'Topic :: Scientific/Engineering',
-        'Programming Language :: Python :: 3',
-        'License :: OSI Approved :: GNU Affero General Public License v3 or later (AGPLv3+)',
-        'Operating System :: OS Independent',
-    ],
-)