Index: .github/workflows/build.yml
===================================================================
diff -u -N -rc223dd98fcdfdcab3124b5627a070f5ba954f2d6 -r52119c183f96646c0dd6ff3dab9916b70db258d9
--- .github/workflows/build.yml	(.../build.yml)	(revision c223dd98fcdfdcab3124b5627a070f5ba954f2d6)
+++ .github/workflows/build.yml	(.../build.yml)	(revision 52119c183f96646c0dd6ff3dab9916b70db258d9)
@@ -84,14 +84,14 @@
             compiler: gcc-10
             tcltag: core-8-7-a5
             experimental: [false]
-          - os: ubuntu-latest
-            compiler: gcc-10
-            tcltag: core-9-0-a3
-            experimental: [true]
-          - os: macos-latest
-            compiler: gcc-11
-            tcltag: core-9-0-a3
-            experimental: [true]
+          # - os: ubuntu-latest
+	  #  compiler: gcc-10
+          #  tcltag: core-9-0-a3
+          #  experimental: [true]
+          #- os: macos-latest
+          #  compiler: gcc-11
+          #  tcltag: core-9-0-a3
+          # experimental: [true]
     defaults:
       run:
         shell: bash