Merge branch 'master' into cli

Author: wyattscarpenter

.github/ISSUE_TEMPLATE/crash.md

@@ -15,7 +15,7 @@ labels: "crash"
 
 **Traceback**
 
-```
+```python-traceback
 (Insert traceback and other messages from mypy here -- use `--show-traceback`.)
 ```
 
@@ -25,6 +25,11 @@ labels: "crash"
 appreciated.  We also very much appreciate it if you try to narrow the
 source down to a small stand-alone example.)
 
+```python
+# Ideally, a small sample program that demonstrates the problem.
+# Or even better, a reproducible playground link https://mypy-play.net/ (use the "Gist" button)
+```
+
 **Your Environment**
 
 <!-- Include as many relevant details about the environment you experienced the bug in -->

.github/workflows/docs.yml

@@ -41,7 +41,7 @@ jobs:
         with:
           python-version: '3.12'
       - name: Install tox
-        run: pip install tox==4.21.2
+        run: pip install tox==4.26.0
       - name: Setup tox environment
         run: tox run -e ${{ env.TOXENV }} --notest
       - name: Test

.github/workflows/mypy_primer.yml

@@ -28,7 +28,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        shard-index: [0, 1, 2, 3, 4]
+        shard-index: [0, 1, 2, 3, 4, 5]
       fail-fast: false
     timeout-minutes: 60
     steps:
@@ -63,7 +63,7 @@ jobs:
             mypy_primer \
             --repo mypy_to_test \
             --new $GITHUB_SHA --old base_commit \
-            --num-shards 5 --shard-index ${{ matrix.shard-index }} \
+            --num-shards 6 --shard-index ${{ matrix.shard-index }} \
             --debug \
             --additional-flags="--debug-serialize" \
             --output concise \

.github/workflows/test.yml

@@ -47,12 +47,11 @@ jobs:
           os: ubuntu-24.04-arm
           toxenv: py
           tox_extra_args: "-n 4"
-        - name: Test suite with py311-ubuntu, mypyc-compiled
+        - name: Test suite with py311-ubuntu
           python: '3.11'
           os: ubuntu-24.04-arm
           toxenv: py
           tox_extra_args: "-n 4"
-          test_mypyc: true
         - name: Test suite with py312-ubuntu, mypyc-compiled
           python: '3.12'
           os: ubuntu-24.04-arm
@@ -66,13 +65,13 @@ jobs:
           tox_extra_args: "-n 4"
           test_mypyc: true
 
-        # - name: Test suite with py314-dev-ubuntu
-        #   python: '3.14-dev'
-        #   os: ubuntu-24.04-arm
-        #   toxenv: py
-        #   tox_extra_args: "-n 4"
-        #   allow_failure: true
-        #   test_mypyc: true
+        - name: Test suite with py314-dev-ubuntu
+          python: '3.14-dev'
+          os: ubuntu-24.04-arm
+          toxenv: py
+          tox_extra_args: "-n 4"
+          # allow_failure: true
+          test_mypyc: true
 
         - name: mypyc runtime tests with py39-macos
           python: '3.9.21'
@@ -115,6 +114,8 @@ jobs:
       FORCE_COLOR: ${{ !(startsWith(matrix.os, 'windows-') && startsWith(matrix.toxenv, 'py')) && 1 || 0 }}
       # Tox
       PY_COLORS: 1
+      # Python -- Disable argparse help colors (3.14+)
+      PYTHON_COLORS: 0
       # Mypy (see https://github.com/python/mypy/issues/7771)
       TERM: xterm-color
       MYPY_FORCE_COLOR: 1
@@ -167,7 +168,7 @@ jobs:
         echo debug build; python -c 'import sysconfig; print(bool(sysconfig.get_config_var("Py_DEBUG")))'
         echo os.cpu_count; python -c 'import os; print(os.cpu_count())'
         echo os.sched_getaffinity; python -c 'import os; print(len(getattr(os, "sched_getaffinity", lambda *args: [])(0)))'
-        pip install setuptools==75.1.0 tox==4.21.2
+        pip install setuptools==75.1.0 tox==4.26.0
 
     - name: Compiled with mypyc
       if: ${{ matrix.test_mypyc }}
@@ -230,7 +231,7 @@ jobs:
           default: 3.11.1
           command: python -c "import platform; print(f'{platform.architecture()=} {platform.machine()=}');"
       - name: Install tox
-        run: pip install setuptools==75.1.0 tox==4.21.2
+        run: pip install setuptools==75.1.0 tox==4.26.0
       - name: Setup tox environment
         run: tox run -e py --notest
       - name: Test