ci(macos,windows): drop submodules:true, use selective submodule list

.github/workflows/build-test-emscripten.yml

@@ -75,7 +75,13 @@ jobs:
           # related issue: https://github.com/actions/checkout/issues/1779
           export HOME=${RUNNER_TEMP}
           git config --global --add safe.directory ${GITHUB_WORKSPACE}
-          git submodule update --init --recursive --depth 1 thirdparty/imgui thirdparty/parallel-hashmap thirdparty/mrbind-pybind11 thirdparty/mrbind
+          git submodule update --init --depth 1 \
+            thirdparty/imgui \
+            thirdparty/parallel-hashmap \
+            thirdparty/mrbind-pybind11 \
+            thirdparty/mrbind
+          # mrbind needs deps/cppdecl; recurse only there
+          git -C thirdparty/mrbind submodule update --init --depth 1 deps/cppdecl
 
       - name: Install thirdparty libs
         run: |

.github/workflows/build-test-linux-vcpkg.yml

@@ -115,7 +115,15 @@ jobs:
           # related issue: https://github.com/actions/checkout/issues/1779
           export HOME=${RUNNER_TEMP}
           git config --global --add safe.directory ${GITHUB_WORKSPACE}
-          git submodule update --init --recursive --depth 1 thirdparty/imgui thirdparty/mrbind-pybind11 thirdparty/mrbind thirdparty/fastmcpp thirdparty/nlohmann-json thirdparty/cpp-httplib
+          git submodule update --init --depth 1 \
+            thirdparty/imgui \
+            thirdparty/mrbind-pybind11 \
+            thirdparty/mrbind \
+            thirdparty/fastmcpp \
+            thirdparty/nlohmann-json \
+            thirdparty/cpp-httplib
+          # mrbind needs deps/cppdecl; recurse only there
+          git -C thirdparty/mrbind submodule update --init --depth 1 deps/cppdecl
 
       - name: Install MRBind
         if: ${{ inputs.mrbind || inputs.mrbind_c }}

.github/workflows/build-test-macos.yml

@@ -73,13 +73,30 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v6
-        with:
-          submodules: true
 
       - name: Checkout third-party submodules
         run: |
-          # Download sub-submodules for certain submodules. We don't recurse above in Checkout to improve build performance. See: https://github.com/actions/checkout/issues/1779
-          git submodule update --init --recursive --depth 1 thirdparty/mrbind
+          # Selective init -- parent Checkout drops submodules:true.
+          # https://github.com/actions/checkout/issues/1779
+          git submodule update --init --depth 1 \
+            thirdparty/imgui \
+            thirdparty/eigen \
+            thirdparty/parallel-hashmap \
+            thirdparty/expected \
+            thirdparty/googletest \
+            thirdparty/OpenCTM-git \
+            thirdparty/libE57Format \
+            thirdparty/glad \
+            thirdparty/tinygltf \
+            thirdparty/laz-perf \
+            thirdparty/clip \
+            thirdparty/fastmcpp \
+            thirdparty/nlohmann-json \
+            thirdparty/cpp-httplib \
+            thirdparty/mrbind \
+            thirdparty/mrbind-pybind11
+          # mrbind needs deps/cppdecl; recurse only there
+          git -C thirdparty/mrbind submodule update --init --depth 1 deps/cppdecl
 
       - name: Setup Homebrew prefix and resolve compiler paths
         id: setup

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

@@ -93,7 +93,14 @@ jobs:
           # related issue: https://github.com/actions/checkout/issues/1779
           export HOME=${RUNNER_TEMP}
           git config --global --add safe.directory '*'
-          git submodule update --init --recursive --depth 1 thirdparty/imgui thirdparty/eigen thirdparty/parallel-hashmap thirdparty/mrbind-pybind11 thirdparty/mrbind
+          git submodule update --init --depth 1 \
+            thirdparty/imgui \
+            thirdparty/eigen \
+            thirdparty/parallel-hashmap \
+            thirdparty/mrbind-pybind11 \
+            thirdparty/mrbind
+          # mrbind needs deps/cppdecl; recurse only there
+          git -C thirdparty/mrbind submodule update --init --depth 1 deps/cppdecl
 
       - name: Install thirdparty libs
         run: |

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

@@ -72,7 +72,14 @@ jobs:
           # related issue: https://github.com/actions/checkout/issues/1779
           export HOME=${RUNNER_TEMP}
           git config --global --add safe.directory '*'
-          git submodule update --init --recursive --depth 1 thirdparty/imgui thirdparty/eigen thirdparty/parallel-hashmap thirdparty/mrbind-pybind11 thirdparty/mrbind
+          git submodule update --init --depth 1 \
+            thirdparty/imgui \
+            thirdparty/eigen \
+            thirdparty/parallel-hashmap \
+            thirdparty/mrbind-pybind11 \
+            thirdparty/mrbind
+          # mrbind needs deps/cppdecl; recurse only there
+          git -C thirdparty/mrbind submodule update --init --depth 1 deps/cppdecl
 
       - name: Install thirdparty libs
         run: |

.github/workflows/build-test-windows.yml

@@ -51,13 +51,25 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v6
-        with:
-          submodules: true
 
       - name: Checkout third-party submodules
         run: |
-          # Download sub-submodules for certain submodules. We don't recurse above in Checkout to improve build performance. See: https://github.com/actions/checkout/issues/1779
-          git submodule update --init --recursive --depth 1 thirdparty/mrbind
+          # Selective init -- parent Checkout drops submodules:true.
+          # https://github.com/actions/checkout/issues/1779
+          git submodule update --init --depth 1 `
+            thirdparty/imgui `
+            thirdparty/eigen `
+            thirdparty/parallel-hashmap `
+            thirdparty/expected `
+            thirdparty/OpenCTM-git `
+            thirdparty/laz-perf `
+            thirdparty/fastmcpp `
+            thirdparty/nlohmann-json `
+            thirdparty/cpp-httplib `
+            thirdparty/mrbind `
+            thirdparty/mrbind-pybind11
+          # mrbind needs deps/cppdecl; recurse only there
+          git -C thirdparty/mrbind submodule update --init --depth 1 deps/cppdecl
 
       - name: Get AWS instance type
         uses: ./.github/actions/get-aws-instance-type

.github/workflows/pip-build.yml

@@ -106,7 +106,14 @@ jobs:
           git config --global --add safe.directory ${GITHUB_WORKSPACE}/thirdparty/parallel-hashmap
           git config --global --add safe.directory ${GITHUB_WORKSPACE}/thirdparty/mrbind-pybind11
           git config --global --add safe.directory ${GITHUB_WORKSPACE}/thirdparty/mrbind
-          git submodule update --init --recursive --depth 1 thirdparty/imgui thirdparty/parallel-hashmap thirdparty/mrbind-pybind11 thirdparty/mrbind
+          git config --global --add safe.directory ${GITHUB_WORKSPACE}/thirdparty/mrbind/deps/cppdecl
+          git submodule update --init --depth 1 \
+            thirdparty/imgui \
+            thirdparty/parallel-hashmap \
+            thirdparty/mrbind-pybind11 \
+            thirdparty/mrbind
+          # mrbind needs deps/cppdecl; recurse only there
+          git -C thirdparty/mrbind submodule update --init --depth 1 deps/cppdecl
 
       - name: Install mrbind
         # Also print the amount of RAM. If there's not enough RAM, building MRBind bindings can fail. Not doing it in that step, because OOM fails can erase logs from the current step.

.github/workflows/update-docs-manual.yml

@@ -46,7 +46,14 @@ jobs:
           # related issue: https://github.com/actions/checkout/issues/1779
           export HOME=${RUNNER_TEMP}
           git config --global --add safe.directory '*'
-          git submodule update --init --recursive --depth 1 thirdparty/imgui thirdparty/eigen thirdparty/parallel-hashmap thirdparty/mrbind-pybind11 thirdparty/mrbind
+          git submodule update --init --depth 1 \
+            thirdparty/imgui \
+            thirdparty/eigen \
+            thirdparty/parallel-hashmap \
+            thirdparty/mrbind-pybind11 \
+            thirdparty/mrbind
+          # mrbind needs deps/cppdecl; recurse only there
+          git -C thirdparty/mrbind submodule update --init --depth 1 deps/cppdecl
 
       - name: Install thirdparty libs
         run: |