tmux

.github/workflows/haskell.yml

@@ -252,6 +252,14 @@ jobs:
         name: chairman-test-artifacts-${{ matrix.os }}-${{ matrix.n }}-${{ matrix.ghc }}
         path: ${{ runner.temp }}/chairman/
 
+    # Uncomment the following back in for debugging. Remember to launch a `pwsh` from
+    # the tmux session to debug `pwsh` issues. And be reminded that the `/msys2` and
+    # `/msys2/mingw64` paths are not in PATH by default for the workflow, but tmate
+    # will put them in.
+    - name: Setup tmate session
+      if: ${{ failure() }}
+      uses: mxschmitt/action-tmate@v3
+
   release:
     needs: [build]
     if: ${{ startsWith(github.ref, 'refs/tags') }}