fix build

pyproject.toml

 [build-system]
-# Minimum requirements for the build system to execute.
-requires = ["setuptools", "wheel", "net_api_generator @ git+https://gitlab.kit.edu/scc-net/netvs/api-generator.git@main", "semver", "requests"]
+requires = ["setuptools", "wheel", "semver", "requests", "net_api_generator @ git+https://gitlab.kit.edu/scc-net/netvs/api-generator.git@main"]
 build-backend = "setuptools.build_meta"
+
+[project]
+name = 'netdb_client'
+authors = [{name = 'NETVS Team', email = 'netvs@scc.kit.edu'}]
+description = 'This is a meta package to install the automatically generated NET-API definitions for the currently supported API versions.'
+requires-python = ">=3.7"
+license = {file = "LICENSE"}
+dependencies = [
+    "requests",
+]
+dynamic = ["version"]
+
+[project.urls]
+homepage = 'https://gitlab.kit.edu/scc-net/netvs/netdb-client'
+
+[tools.setuptools]
+packages = ["netdb_client"]

setup.py

@@ -4,8 +4,12 @@ import subprocess
 import os
 import requests
 import semver
+from importlib.metadata import version
 
-vers = requests.get(f"{os.environ.get('NETDB_SCHEME', 'https')}://{os.environ.get('NETDB_ENDPOINT')}").json()[0]
+
+vers = requests.get(
+    f"{os.environ.get('NETDB_SCHEME', 'https')}://{os.environ.get('NETDB_ENDPOINT', 'api.netdb.scc.kit.edu')}"
+).json()[0]
 largest_ver = None
 for v in vers:
     sem_v = semver.Version.parse(v['numeric'])
@@ -20,8 +24,8 @@ if post_version is not None and not post_version.isdigit():
 
 
 def get_gen_version():
-    ver = subprocess.run(['pip freeze | grep net_api_generator'], shell=True, text=True, check=True, capture_output=True).stdout
-    return ver.split('@')[-1][:12]
+    ver = version('net_api_generator')
+    return ver.split('+')[-1]
 
 
 class APIGenBuild(build_py):
@@ -29,10 +33,10 @@ class APIGenBuild(build_py):
         build_versions = [f'{v["major"]}.{v["minor"]}' for v in vers]
         default_version = f'{largest_ver.major}.{largest_ver.minor}'
         environ = os.environ.copy()
-        for version in build_versions:
-            target_dir = os.path.join(self.build_lib, 'netdb_client', f"api{version.replace('.', '')}")
+        for b_version in build_versions:
+            target_dir = os.path.join(self.build_lib, 'netdb_client', f"api{b_version.replace('.', '')}")
             self.mkpath(target_dir)
-            environ['NETDB_VERSION'] = version
+            environ['NETDB_VERSION'] = b_version
             subprocess.run(['net-api-generator', 'python', f'--output-dir={target_dir}'], check=True, env=environ)
         target_dir = os.path.join(self.build_lib, 'netdb_client')
         environ['NETDB_VERSION'] = default_version
@@ -49,13 +53,6 @@ if util_version != latest_previous_util_version and str(largest_ver) == latest_p
         post_version = int(post_version) + 1
 
 setup(
-    name='netdb_client',
     version=f'{str(largest_ver)}{".post" + str(post_version) if post_version is not None else ""}{".dev1" if os.environ.get("CI_COMMIT_BRANCH", "local") == "devel" else ""}+{util_version}',
-    author='NETVS-Team <netvs@scc.kit.edu>',
-    description='This is a meta package to install the automatically generated NET-API definitions for the currently supported API versions.',
-    url='https://gitlab.kit.edu/scc-net/netvs/netdb-client',
-    install_requires=['requests'],
-    python_requires='>=3.7',
-    packages=['netdb_client'],
     cmdclass={'build_py': APIGenBuild},
 )