Move to poetry.

pyproject.toml

+[tool.poetry]
+name = "BiscuIT-App-Untis"
+version = "1.0a0.dev0"
+packages = [
+    { include = "biscuit" }
+]
+readme = "README.md"
+
+description = "BiscuIT School Information System (SIS) - App Untis (Untis import)"
+authors = ["BiscuIT Team <biscuit-dev@lists.teckids.org>"]
+license = "MIT"
+homepage = "https://biscuit.edugit.org/"
+repository = "https://edugit.org/Teckids/BiscuIT/BiscuIT-App-Untis"
+documentation = "https://biscuit.edugit.org/docs/html/"
+classifiers = [
+    "Environment :: Web Environment",
+    "Intended Audience :: Education",
+    "Topic :: Education"
+]
+
+[tool.poetry.dependencies]
+python = "^3.7"
+BiscuIT-ng = {version = "^1.0a0.dev0", allows-prereleases = true, path = "../../.."}
+BiscuIT-App-Chronos = {version = "^1.0a0.dev0", allows-prereleases = true, path = "../BiscuIT-App-Chronos"}
+
+[build-system]
+requires = ["poetry>=0.12"]
+build-backend = "poetry.masonry.api"

setup.py

-#!/usr/bin/env python3
-
-from setuptools import setup
-
-setup(
-    name='BiscuIT-App-Untis',
-    version='1.0dev0',
-    url='https://edugit.org/Teckids/BiscuIT/BiscuIT-App-Untis',
-    author="Teckids e.V.",
-    author_email="verein@teckids.org",
-    packages=[
-        'biscuit.apps.untis',
-        'biscuit.apps.untis.management.commands'
-    ],
-    namespace_packages=[
-        'biscuit',
-        'biscuit.apps'
-    ],
-    include_package_data=True,
-    install_requires=[
-        'BiscuIT-ng',
-        'BiscuIT-App-Chronos',
-    ],
-    classifiers=[
-        "Development Status :: 3 - Alpha",
-        "Environment :: Web Environment",
-        "Intended Audience :: Education",
-        "License :: OSI Approved :: MIT License",
-        "Programming Language :: Python :: 3",
-        "Topic :: Education",
-    ],
-)