Adjust git paths for command capture, repo clone destinations (#13)

* Adjust git paths for command capture, repo clone destinations

Also updates the expected artifact locations, relative to the workspace.

* Use bash for Bazel command capture, try to improve globs

* Remove inline comments from path command

They seem to be interpreted as part of the glob, which screws them up.

* Add artifact merge job

* Build nanobind_example wheel using Bazel to obtain linker flagfiles

Also postprocess the files into a single directory to obtain a neater
artifact.

* Use cp instead of mv, find param files via `find` and copy

Using xargs, in bash.

* Use explicit glob in Bazel artifact to prevent flattening

.github/workflows/capture-compile-commands.yaml

@@ -5,7 +5,7 @@ on:
 
 jobs:
   nb-compile-commands:
-    name: Capture nanobind CMake compile commands on ${{ matrix.os }}
+    name: Capture nanobind compile commands on ${{ matrix.os }}
     runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false
@@ -15,6 +15,7 @@ jobs:
       - uses: actions/checkout@v4
         with:
           repository: wjakob/nanobind_example
+          path: nanobind_example
           fetch-depth: 0
       - uses: actions/checkout@v4
         with:
@@ -25,19 +26,25 @@ jobs:
           python-version: 3.12
       - run: python -m pip install --upgrade build
       - name: Build and capture CMake compile commands
-        run: python -m build . --wheel -Ccmake.args=-DCMAKE_EXPORT_COMPILE_COMMANDS=ON
+        run: python -m build . --wheel --config-setting="cmake.args=-DCMAKE_EXPORT_COMPILE_COMMANDS=ON"
+        working-directory: nanobind_example
       - name: Upload CMake commands and Ninja build artifacts
         uses: actions/upload-artifact@v4
         with:
-          name: compile-commands-${{ matrix.os}}-cmake
+          name: cmake-compile-commands-${{ matrix.os}}
+          # the build subfolder name is autogenerated, so just use a glob.
+          # the build.ninja file has the linker command section.
           path: |
-            # the build subfolder name is autogenerated, so just use a glob.
-            build/cp312-*/build.ninja  # this has the linker command section. 
-            build/cp312-*/CMakeCache.txt
-            build/cp312-*/compile_commands.json
+            nanobind_example/build/cp312-*/build.ninja
+            nanobind_example/build/cp312-*/CMakeCache.txt
+            nanobind_example/build/cp312-*/compile_commands.json
           if-no-files-found: error
       - name: Clean repo and switch to Bazel
         run: git clean -xdf && git checkout bazel
+        working-directory: nanobind_example
+      - name: Build wheel using Bazel
+        run: python -m build . --wheel
+        working-directory: nanobind_example
       - name: Extract Bazel compile commands for ${{ matrix.os}}
         run: |
           bazel run @hedron_compile_commands//:refresh_all \
@@ -47,11 +54,38 @@ jobs:
             --@rules_python//python/config_settings:python_version=3.12 \
             --@nanobind_bazel//:minsize \
             --@nanobind_bazel//:py-limited-api=cp312
+        shell: bash
+        working-directory: nanobind_example
+      - name: Rearrange files into a single output directory
+        run: |
+          mkdir ${{ matrix.os }}
+          cp compile_commands.json ${{ matrix.os }}
+          find bazel-out/ -name '*.params' |  xargs  -I _ cp _ ${{ matrix.os }}
+        shell: bash
+        working-directory: nanobind_example
       - name: Upload Bazel compile commands and flag files for ${{ matrix.os }}
         uses: actions/upload-artifact@v4
         with:
-          name: compile-commands-${{ matrix.os}}-bazel
+          name: bazel-compile-commands-${{ matrix.os }}
+          # use dir glob to preserve top-level directories.
           path: |
-            compile_commands.json
-            bazel-out/*-opt/**/*.params  # these should be two - the libnanobind params, and the nanobind_example_ext params.
+            nanobind_example/*-latest/*.params
+            nanobind_example/*-latest/compile_commands.json
           if-no-files-found: error
+  merge-compile-commands:
+    name: Stitch together previously collected commands
+    runs-on: ubuntu-latest
+    needs: nb-compile-commands
+    steps:
+      - name: Merge all CMake Artifacts into one
+        uses: actions/upload-artifact/merge@v4
+        with:
+          name: cmake-compile-commands
+          pattern: cmake-compile-commands-*
+          delete-merged: true
+      - name: Merge all Bazel Artifacts into one
+        uses: actions/upload-artifact/merge@v4
+        with:
+          name: bazel-compile-commands
+          pattern: bazel-compile-commands-*
+          delete-merged: true