diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 6f9fdc4842..9d1d217218 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -18,93 +18,94 @@ on:
     - cron: "0 5 * * 1"
 
 jobs:
-  "Posix":
-    name: build-*nix
-    runs-on: ${{ matrix.os }}
-    strategy:
-      fail-fast: false
-      matrix:
-        os: [ubuntu-latest, macos-latest]
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v1
-      - name: Setup Python
-        uses: actions/setup-python@v4
-        with:
-          python-version: '3.11'
-      - name: Setup Java
-        uses: actions/setup-java@v3
-        with:
-          distribution: 'temurin'
-          java-version: '11'
-      - name: Setup dotnet
-        uses: actions/setup-dotnet@v3
-        with:
-          dotnet-version: '6.0.X'
-      # TODO: install on other platforms, too
-      - name: Setup tcl (ubuntu)
-        if: matrix.os == 'ubuntu-latest'
-        run: sudo apt-get update && sudo apt-get install tcl-dev
-
-      - name: build
-        env:
-          # instructs SCons to print debug statements to stdout
-          SCONS_MSCOMMON_DEBUG: '-'
-        run: python3 scons/scons.py --scu --opt --verbose all performance_tests
-
-      - name: Pack artifacts
-        run: tar -czvf build.tar.gz out/
-      - name: upload artifacts
-        uses: actions/upload-artifact@v3
-        with:
-          name: Soar-${{ matrix.os }}
-          path: ./build.tar.gz
-
-      - name: unit tests
-        working-directory: ./out
-        # TODO: why do these fail? Make them pass. testHamilton only fails on Mac, and only sometimes.
-        run: ./UnitTests -e PRIMS_Sanity1 -e PRIMS_Sanity2 -f testLoadLibrary -f testSmemArithmetic -f testHamilton
-
-      - name: SML Java tests
-        working-directory: ./out
-        env:
-          LD_LIBRARY_PATH: ${{ github.workspace }}/out
-        run: java -jar java/soar-smljava.jar
-
-      - name: SML Python tests
-        working-directory: ./out
-        env:
-          LD_LIBRARY_PATH: ${{ github.workspace }}/out
-          PYTHONUTF8: 1
-        run: python3 TestPythonSML.py
-
-      - name: SML Tcl tests
-        working-directory: ./out
-        run: tclsh TestTclSML.tcl
-
-        # TODO: run additional tests for CSharp
-
-      # reports JUnit test results as GitHub PR check.
-      - name: publish test report
-        uses: mikepenz/action-junit-report@v3
-        # always run even if the previous step fails
-        if: always()
-        with:
-          report_paths: './out/TestResults.xml'
-          # disabled until https://github.com/mikepenz/action-junit-report/issues/40 is resolved
-          # fail_on_failure: true
-          annotate_only: true
-      # TODO: run SML tests (Python, Tcl, Java)
-
-      - name: performance tests
-        working-directory: ./out
-        run: sudo ./do_performance_test.sh
-
-      - name: upload performance test results
-        uses: actions/upload-artifact@v3
-        with:
-          name: ${{ matrix.os }}-PerformanceTestResults.txt
-          path: ./out/SoarPerformanceTests/PerformanceTestResults.txt
+  # Temporarily disable for testing. TODO: put this back!
+  # "Posix":
+  #   name: build-*nix
+  #   runs-on: ${{ matrix.os }}
+  #   strategy:
+  #     fail-fast: false
+  #     matrix:
+  #       os: [ubuntu-latest, macos-latest]
+  #   steps:
+  #     - name: Checkout
+  #       uses: actions/checkout@v1
+  #     - name: Setup Python
+  #       uses: actions/setup-python@v4
+  #       with:
+  #         python-version: '3.11'
+  #     - name: Setup Java
+  #       uses: actions/setup-java@v3
+  #       with:
+  #         distribution: 'temurin'
+  #         java-version: '11'
+  #     - name: Setup dotnet
+  #       uses: actions/setup-dotnet@v3
+  #       with:
+  #         dotnet-version: '6.0.X'
+  #     # TODO: install on other platforms, too
+  #     - name: Setup tcl (ubuntu)
+  #       if: matrix.os == 'ubuntu-latest'
+  #       run: sudo apt-get update && sudo apt-get install tcl-dev
+
+  #     - name: build
+  #       env:
+  #         # instructs SCons to print debug statements to stdout
+  #         SCONS_MSCOMMON_DEBUG: '-'
+  #       run: python3 scons/scons.py --scu --opt --verbose all performance_tests
+
+  #     - name: Pack artifacts
+  #       run: tar -czvf build.tar.gz out/
+  #     - name: upload artifacts
+  #       uses: actions/upload-artifact@v3
+  #       with:
+  #         name: Soar-${{ matrix.os }}
+  #         path: ./build.tar.gz
+
+  #     - name: unit tests
+  #       working-directory: ./out
+  #       # TODO: why do these fail? Make them pass. testHamilton only fails on Mac, and only sometimes.
+  #       run: ./UnitTests -e PRIMS_Sanity1 -e PRIMS_Sanity2 -f testLoadLibrary -f testSmemArithmetic -f testHamilton
+
+  #     - name: SML Java tests
+  #       working-directory: ./out
+  #       env:
+  #         LD_LIBRARY_PATH: ${{ github.workspace }}/out
+  #       run: java -jar java/soar-smljava.jar
+
+  #     - name: SML Python tests
+  #       working-directory: ./out
+  #       env:
+  #         LD_LIBRARY_PATH: ${{ github.workspace }}/out
+  #         PYTHONUTF8: 1
+  #       run: python3 TestPythonSML.py
+
+  #     - name: SML Tcl tests
+  #       working-directory: ./out
+  #       run: tclsh TestTclSML.tcl
+
+  #       # TODO: run additional tests for CSharp
+
+  #     # reports JUnit test results as GitHub PR check.
+  #     - name: publish test report
+  #       uses: mikepenz/action-junit-report@v3
+  #       # always run even if the previous step fails
+  #       if: always()
+  #       with:
+  #         report_paths: './out/TestResults.xml'
+  #         # disabled until https://github.com/mikepenz/action-junit-report/issues/40 is resolved
+  #         # fail_on_failure: true
+  #         annotate_only: true
+  #     # TODO: run SML tests (Python, Tcl, Java)
+
+  #     - name: performance tests
+  #       working-directory: ./out
+  #       run: sudo ./do_performance_test.sh
+
+  #     - name: upload performance test results
+  #       uses: actions/upload-artifact@v3
+  #       with:
+  #         name: ${{ matrix.os }}-PerformanceTestResults.txt
+  #         path: ./out/SoarPerformanceTests/PerformanceTestResults.txt
 
 # Using powershell means we need to explicitly stop on failure
   Windows:
@@ -150,6 +151,7 @@ jobs:
           if ($lastexitcode -ne 0) {
              throw "nmake exit code: $lastexitcode"
           }
+          setx /M PATH "$($env:path);c:\progra~1\tcl\bin"
 
       - name: build
         env: