Remove Packaging Dependency

jupyter_server/_version.py

@@ -2,8 +2,15 @@
 store the current version info of the server.
 
 """
-from jupyter_packaging import get_version_info
+import re
 
 # Version string must appear intact for tbump versioning
 __version__ = '1.7.0.dev0'
-version_info = get_version_info(__version__)
+
+# Build up version_info tuple for backwards compatibility
+pattern = r'(?P<major>\d+).(?P<minor>\d+).(?P<patch>\d+)(?P<rest>.*)'
+match = re.match(pattern, __version__)
+parts = [int(match[part]) for part in ['major', 'minor', 'patch']]
+if match['rest']:
+  parts.append(match['rest'])
+version_info = tuple(parts)

pyproject.toml

@@ -1,5 +1,5 @@
 [build-system]
-requires = ["jupyter_packaging~=0.9"]
+requires = ["jupyter_packaging~=0.9,<2"]
 build-backend = "jupyter_packaging.build_api"
 
 [tool.jupyter-packaging.builder]

setup.cfg

@@ -35,7 +35,6 @@ install_requires =
     traitlets>=4.2.1
     jupyter_core>=4.6.0
     jupyter_client>=6.1.1
-    jupyter_packaging~=0.9
     nbformat
     nbconvert
     Send2Trash