Use local coverage

.github/workflows/test.yml

@@ -41,15 +41,20 @@ jobs:
       - name: Test
         run: |
           hatch run cov:test
-      - name: Coverage
-        run: |
-          pip install codecov coverage[toml]
-          codecov
       - name: Check CLI
         run: |
           pip install .
           cd $HOME
           jupyter troubleshoot
+      - uses: jupyterlab/maintainer-tools/.github/actions/upload-coverage@v1
+
+  coverage:
+    runs-on: ubuntu-latest
+    needs:
+      - build
+    steps:
+      - uses: actions/checkout@v3
+      - uses: jupyterlab/maintainer-tools/.github/actions/report-coverage@v1
 
   test_minimum_versions:
     name: Test Minimum Versions
@@ -152,7 +157,7 @@ jobs:
   tests_check: # This job does nothing and is only used for the branch protection
     if: always()
     needs:
-      - build
+      - coverage
       - test_lint
       - test_docs
       - test_minimum_versions

README.md

@@ -1,7 +1,6 @@
 # Jupyter Core
 
 [![Build Status](/~https://github.com/jupyter/jupyter_core/actions/workflows/test.yml/badge.svg?query=branch%3Amain++)](/~https://github.com/jupyter/jupyter_core/actions/workflows/test.yml/badge.svg?query=branch%3Amain++)
-[![codecov](https://codecov.io/gh/jupyter/jupyter_core/branch/main/graph/badge.svg?token=IRZuxPXamU)](https://codecov.io/gh/jupyter/jupyter_core)
 [![Documentation Status](https://readthedocs.org/projects/jupyter-core/badge/?version=latest)](http://jupyter-core.readthedocs.io/en/latest/?badge=latest)
 
 Core common functionality of Jupyter projects.

pyproject.toml

@@ -138,6 +138,10 @@ filterwarnings= [
   "module:Jupyter is migrating its paths to use standard platformdirs:DeprecationWarning",
 ]
 
+[tool.coverage.run]
+relative_files = true
+source = ["jupyter_core"]
+
 [tool.coverage.report]
 exclude_lines = [
   "pragma: no cover",