Reduce source distribution size (#338)

## Update .gitattributes: exclude tests and workflows from archive

meson-python uses git-archive to create the sdist. Some of euphonic's
test files are on the large side and we don't need to include them
with every copy of the source.

This does have the downside that git-archive can no longer be used
to produce a copy of the source with tests, but we weren't using that
anyway.


## Build wheels from git checkout

While the purity of building from sdist was appealing, it is difficult
for cibuildwheel to cleanly run an external test suite as it
containerizes the Linux build (to deal with ManyLinux requirements).

We are still testing the sdist (on Windows) so just have to trust in
cibuildwheel's own efforts to separate the testing and source from the
installation. (Which it does seem to work quite hard at.)

.gitattributes

@@ -1,2 +1,3 @@
-# Added by versioneer
-euphonic/_version.py export-subst
+.github/** export-ignore
+tests_and_analysis/** export-ignore
+tox.ini export-ignore

.github/workflows/build_upload_pypi_wheels.yml

@@ -6,29 +6,7 @@ on:
   workflow_dispatch:
 
 jobs:
-  build-sdist:
-    name: Build sdist
-    runs-on: ubuntu-latest
-
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          fetch-depth: 0 # Ensure tags are fetched for versioning
-
-      - name: Create source distribution
-        shell: bash -l {0}
-        run: |
-          pipx run build --sdist .
-
-      - name: Upload source dist as build artifact
-        uses: actions/upload-artifact@v4
-        with:
-            name: python-source-distribution
-            path: dist/
-            if-no-files-found: error
-
   build-wheels:
-    needs: build-sdist
     strategy:
       matrix:
         os: [windows-latest, macos-13, macos-latest, ubuntu-latest]
@@ -58,21 +36,6 @@ jobs:
       - name: Checkout project (for test files)
         uses: actions/checkout@v4
 
-      - name: Delete source (to ensure we are using sdist only)
-        shell: bash -l {0}
-        run: rm -rf euphonic
-
-      - name: Download sdist
-        uses: actions/download-artifact@v4
-        with:
-          name: python-source-distribution
-          path: dist/
-
-      - name: Get sdist filename
-        shell: bash -l {0}
-        run: |
-          echo EUPHONIC_SDIST="$(find dist/ -name 'euphonic*.tar.gz')" >> $GITHUB_ENV
-
       - name: Setup Python ${{ matrix.python-version }}
         uses: actions/setup-python@v5
         with:
@@ -113,7 +76,7 @@ jobs:
         run: |
           python -m pip install --upgrade pip build wheel twine
 
-      - name: Build wheels from sdist
+      - name: Build wheels from git checkout
         uses: pypa/[email protected]
         env:
           CIBW_BUILD_FRONTEND: build
@@ -124,11 +87,10 @@ jobs:
           CIBW_REPAIR_WHEEL_COMMAND_MACOS: ""
 
           CIBW_TEST_EXTRAS: "test,brille,phonopy_reader,matplotlib"
-          CIBW_TEST_COMMAND: python {package}/tests_and_analysis/test/run_tests.py
+          CIBW_TEST_COMMAND: "python {package}/tests_and_analysis/test/run_tests.py"
 
         with:
           output-dir: wheelhouse
-          package-dir: ${{ env.EUPHONIC_SDIST }}
 
       - name: Upload wheels as build artifacts
         uses: actions/upload-artifact@v4
@@ -137,6 +99,27 @@ jobs:
             path: wheelhouse/*-${{ matrix.wheelname }}*_${{ matrix.cibw_archs }}.whl
             if-no-files-found: error
 
+  build-sdist:
+    name: Build sdist
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0 # Ensure tags are fetched for versioning
+
+      - name: Create source distribution
+        shell: bash -l {0}
+        run: |
+          pipx run build --sdist .
+
+      - name: Upload source dist as build artifact
+        uses: actions/upload-artifact@v4
+        with:
+            name: python-source-distribution
+            path: dist/
+            if-no-files-found: error
+
   test-sdist:
     needs: build-sdist
     name: Test build from sdist on Windows
@@ -194,7 +177,6 @@ jobs:
         shell: bash -l {0}
         run: python tests_and_analysis/test/run_tests.py --report
 
-
   publish:
     if: github.event_name == 'release'
     needs: [build-wheels,test-sdist]