CI: Don't build Python bindings on Ubuntu 20.04

.github/workflows/build-test-ubuntu-arm64.yml

@@ -106,7 +106,7 @@ jobs:
           ln -s /usr/local/lib/meshlib-thirdparty-lib/include ./include
 
       - name: Install MRBind
-        if: ${{ inputs.mrbind || inputs.mrbind_c }}
+        if: ${{ ( inputs.mrbind && matrix.os != 'ubuntu20' ) || inputs.mrbind_c }}
         run: scripts/mrbind/install_mrbind_ubuntu.sh
 
       - name: Create virtualenv
@@ -145,11 +145,11 @@ jobs:
           MR_CMAKE_OPTIONS: >
             -DMR_CXX_STANDARD=${{ matrix.cxx-standard }}
             -DMR_PCH_USE_EXTRA_HEADERS=ON
-            -DMESHLIB_BUILD_MRMESH_PY_LEGACY=${{ fromJSON('["ON", "OFF"]')[inputs.mrbind] }}
+            -DMESHLIB_BUILD_MRMESH_PY_LEGACY=${{ fromJSON('["ON", "OFF"]')[inputs.mrbind && matrix.os != 'ubuntu20'] }}
             -DMESHLIB_BUILD_GENERATED_C_BINDINGS=${{ fromJSON('["OFF", "ON"]')[inputs.mrbind_c] }}
 
       - name: Generate and build Python bindings
-        if: ${{ inputs.mrbind }}
+        if: ${{ inputs.mrbind && matrix.os != 'ubuntu20' }}
         env:
           CXX: ${{ matrix.cxx-compiler }}
         run: make -f scripts/mrbind/generate.mk MODE=none -B --trace MESHLIB_SHLIB_DIR=build/${{matrix.config}}/bin
@@ -181,7 +181,7 @@ jobs:
         run: MR_LOCAL_RESOURCES=1 xvfb-run -a ./build/${{ matrix.config }}/bin/MeshViewer -hidden -noEventLoop -unloadPluginsAtEnd
 
       - name: Unit Tests
-        run: ./build/${{ matrix.config }}/bin/MRTest
+        run: ./build/${{ matrix.config }}/bin/MRTest ${{ matrix.os == 'ubuntu20' && '--no-python-tests' || '' }}
 
       - name: C Unit Tests (old bindings)
         run: ./build/${{ matrix.config }}/bin/MRTestC
@@ -191,20 +191,20 @@ jobs:
         run: ./build/${{ matrix.config }}/bin/MRTestC2
 
       - name: Python Sanity Tests
+        if: ${{ inputs.mrbind && matrix.os != 'ubuntu20' }}
         timeout-minutes: 8
         working-directory: ./build/${{ matrix.config }}/bin
         run: python3 ./../../../scripts/run_python_test_script.py -d '../test_python'
 
       - name: Python Regression Tests
-        if: ${{ inputs.internal_build }}
+        if: ${{ inputs.internal_build && ( inputs.mrbind && matrix.os != 'ubuntu20' ) }}
         uses: ./.github/actions/python-regression-tests
         with:
           build_config: ${{ matrix.config }}
-          mrbind: ${{ inputs.mrbind }}
+          mrbind: true
           pytest_args: "--run-cuda=negative"
           smoke: ${{ !inputs.full_config_build && matrix.config == 'Debug' }}
           test_artifacts_path: ubuntu_arm64/${{ matrix.os }}
-          ubuntu20_arm_workaround: ${{ inputs.mrbind && matrix.os == 'ubuntu20' }}
           upload_test_artifacts: ${{ inputs.upload_test_artifacts }}
 
       - name: Create Deb

.github/workflows/build-test-ubuntu-x64.yml

@@ -83,7 +83,7 @@ jobs:
           ln -s /usr/local/lib/meshlib-thirdparty-lib/include ./include
 
       - name: Install MRBind
-        if: ${{ inputs.mrbind || inputs.mrbind_c }}
+        if: ${{ ( inputs.mrbind && matrix.os != 'ubuntu20' ) || inputs.mrbind_c }}
         run: scripts/mrbind/install_mrbind_ubuntu.sh
 
       - name: Create virtualenv
@@ -116,11 +116,11 @@ jobs:
             -DMR_CXX_STANDARD=${{ matrix.cxx-standard }}
             -DMESHLIB_BUILD_MRCUDA=${{ matrix.build_mrcuda }}
             -DMR_PCH_USE_EXTRA_HEADERS=ON
-            -DMESHLIB_BUILD_MRMESH_PY_LEGACY=${{ fromJSON('["ON", "OFF"]')[inputs.mrbind] }}
+            -DMESHLIB_BUILD_MRMESH_PY_LEGACY=${{ fromJSON('["ON", "OFF"]')[inputs.mrbind && matrix.os != 'ubuntu20'] }}
             -DMESHLIB_BUILD_GENERATED_C_BINDINGS=${{ fromJSON('["OFF", "ON"]')[inputs.mrbind_c] }}
 
       - name: Generate and build Python bindings
-        if: ${{ inputs.mrbind }}
+        if: ${{ inputs.mrbind && matrix.os != 'ubuntu20' }}
         env:
           CXX: ${{ matrix.cxx-compiler }}
           ENABLE_CUDA: ${{ fromJSON('{"ON":1, "OFF":0}') [matrix.build_mrcuda] }}
@@ -141,7 +141,7 @@ jobs:
         run: MR_LOCAL_RESOURCES=1 xvfb-run -a ./build/${{ matrix.config }}/bin/MeshViewer -hidden -noEventLoop -unloadPluginsAtEnd
 
       - name: Unit Tests
-        run: ./build/${{ matrix.config }}/bin/MRTest
+        run: ./build/${{ matrix.config }}/bin/MRTest ${{ matrix.os == 'ubuntu20' && '--no-python-tests' || '' }}
 
       - name: C Unit Tests (old bindings)
         run: ./build/${{ matrix.config }}/bin/MRTestC
@@ -151,18 +151,19 @@ jobs:
         run: ./build/${{ matrix.config }}/bin/MRTestC2
 
       - name: Python Sanity Tests
+        if: ${{ inputs.mrbind && matrix.os != 'ubuntu20' }}
         timeout-minutes: 8
         working-directory: ./build/${{ matrix.config }}/bin
         run: python3 ./../../../scripts/run_python_test_script.py -d '../test_python'
 
       - name: Python Regression Tests
-        if: ${{ inputs.internal_build }}
+        if: ${{ inputs.internal_build && ( inputs.mrbind && matrix.os != 'ubuntu20' ) }}
         env:
           RUN_CUDA_ARG: "--run-cuda=negative"
         uses: ./.github/actions/python-regression-tests
         with:
           build_config: ${{ matrix.config }}
-          mrbind: ${{ inputs.mrbind }}
+          mrbind: true
           pytest_args: ${{ env.RUN_CUDA_ARG }}
           smoke: ${{ !inputs.full_config_build && matrix.config == 'Debug' }}
           test_artifacts_path: ${{ matrix.os }}/${{matrix.config}}/${{matrix.compiler}}

docker/ubuntu20Dockerfile

@@ -38,8 +38,6 @@ COPY scripts/mrbind/clang_version.txt scripts/mrbind/clang_version.txt
 COPY scripts/install_thirdparty.sh scripts/install_thirdparty.sh
 COPY scripts/patches scripts/patches
 COPY requirements requirements
-COPY scripts/mrbind-pybind11/python_versions.txt scripts/mrbind-pybind11/python_versions.txt
-COPY scripts/mrbind-pybind11/install_all_python_versions_ubuntu_pkgs.sh scripts/mrbind-pybind11/install_all_python_versions_ubuntu_pkgs.sh
 
 COPY --from=build /home/MeshLib/lib /usr/local/lib/meshlib-thirdparty-lib/lib
 COPY --from=build /home/MeshLib/include /usr/local/lib/meshlib-thirdparty-lib/include
@@ -56,7 +54,6 @@ RUN export DEBIAN_FRONTEND=noninteractive; \
         tzdata git sudo time xvfb curl unzip ninja-build \
  && ./scripts/install_apt_requirements.sh \
  && ./scripts/mrbind/install_deps_ubuntu.sh \
- && ./scripts/mrbind-pybind11/install_all_python_versions_ubuntu_pkgs.sh \
  && curl -fsSL https://cli.github.com/packages/githubcli-archive-keyring.gpg | sudo dd of=/usr/share/keyrings/githubcli-archive-keyring.gpg \
  && echo "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/githubcli-archive-keyring.gpg] https://cli.github.com/packages stable main" | sudo tee /etc/apt/sources.list.d/github-cli.list > /dev/null \
  && apt-get update -y \