Add action-tmate

Author: cgrindel

.github/workflows/workflow.yaml

@@ -48,13 +48,19 @@ jobs:
         # module: [rules_haskell, rules_haskell_nix, rules_haskell_tests]
         # DEBUG BEGIN
         os: [macos-latest]
-        # DEBUG END
         module: [rules_haskell_tests]
-        bzlmod: [true, false]
+        # DEBUG END
+        # TODO(chuck): FIX ME!
+        # bzlmod: [true, false]
+        # ghc:
+        #   - 9.2.8
+        #   - 9.4.6
+        #   - 9.6.2
+        # DEBUG BEGIN
+        bzlmod: [true]
         ghc:
           - 9.2.8
-          - 9.4.6
-          - 9.6.2
+        # DEBUG END
         exclude:
           - module: rules_haskell_nix
 
@@ -104,6 +110,10 @@ jobs:
           EOF
           cp .bazelrc.local rules_haskell_nix
           cp .bazelrc.local rules_haskell_tests
+      # DEBUG BEGIN
+      - name: Setup tmate session
+        uses: mxschmitt/action-tmate@v3
+      # DEBUG END
       - name: Build & test - rules_haskell
         if: matrix.module == 'rules_haskell'
         uses: tweag/run-nix-shell@v0
@@ -144,8 +154,8 @@ jobs:
             # top -l 1 -s 0 -o mem >&2
             # echo >&2 "run-tests"
             # # DEBUG END
-            # ./bazel-ci-bin/tests/run-tests
-            ./bazel-ci-bin/tests/run-tests || true
+            ./bazel-ci-bin/tests/run-tests
+            # ./bazel-ci-bin/tests/run-tests || true
             # # DEBUG BEGIN
             # echo >&2 "CHUCK AFTER"
             # # top -l 1 -s 0 -o mem | head -n 25 >&2