MAINT, CI: check _distributor_init.py contents

appveyor.yml

@@ -143,7 +143,7 @@ build_script:
       $cwd = Get-Location
       ls $cwd
       rm -Force $cwd/scipy/scipy/_distributor_init.py
-      mv $cwd/_distributor_init.py $cwd/scipy/scipy/
+      cp $cwd/_distributor_init.py $cwd/scipy/scipy/
       cd scipy
   # Append license text relevant for the built wheel
   - type ..\LICENSE_win32.txt >> LICENSE.txt
@@ -198,6 +198,10 @@ test_script:
   - python ..\run_scipy_tests.py %TEST_MODE% -- -n6 --junitxml=%cd%\junit-results.xml -rfEX
 
 after_test:
+  - cd ..
+  - ls scipy\dist
+  - python verify_init.py scipy\dist
+  - cd tmp_test
   # Upload test results to Appveyor
   - ps: |
       If (Test-Path .\junit-results.xml) {

azure-posix.yml

@@ -88,6 +88,11 @@ jobs:
         displayName: "Rename MacOS arm64 wheels for version 12.0 minimum"
         condition: eq(variables['PLAT'], 'arm64')
 
+      - bash: |
+          set -xe
+          python verify_init.py ./wheelhouse
+        displayName: "Check for appropriate contents of _distributor_init.py"
+
       - bash: |
           echo "##vso[task.prependpath]$CONDA/bin"
           sudo chown -R $USER $CONDA

patch_code.sh

@@ -13,5 +13,5 @@ if [ -z "$IS_OSX" ]; then
     cat LICENSE_linux.txt >> $repo_dir/LICENSE.txt
 else
     cat LICENSE_osx.txt >> $repo_dir/LICENSE.txt
-    cp _distributor_init.py scipy/_distributor_init.py
+    cp _distributor_init.py scipy/scipy/_distributor_init.py
 fi

verify_init.py

@@ -0,0 +1,40 @@
+"""
+Small CLI script that accepts the path to a directory containing one
+or more wheel files.
+
+Check that a wheel appropriately includes/excludes
+_distributor_init.py with the contents of that same
+file in the wheels repo.
+"""
+
+import sys
+import pathlib
+from zipfile import ZipFile
+
+
+def check_for_dist_init(input_dir):
+    p = pathlib.Path(input_dir)
+    wheel_files = p.glob('**/*.whl')
+    for wheel_file in wheel_files:
+        with ZipFile(wheel_file) as zipf:
+            file_names = zipf.namelist()
+            dist_init_found = 0
+            for file_name in file_names:
+                if "_distributor_init.py" in file_name:
+                    dist_init_found += 1
+                    with zipf.open(file_name) as actual_file:
+                        with open("_distributor_init.py", 'rb') as reference_file:
+                            # currently just MacOS and Windows should have _distributor_init.py
+                            # copied in from wheels repo; Linux should just have a generic
+                            # version of the file
+                            if "-macosx" in str(wheel_file) or "-win" in str(wheel_file):
+                                actual_content = actual_file.read()
+                                expected_content = reference_file.read()
+                                if not actual_content == expected_content:
+                                    raise ValueError(f"Contents of _distributor_init.py incorrect for {wheel_file}")
+            if not dist_init_found:
+                raise FileNotFoundError(f"_distributor_init.py missing from {wheel_file}")
+
+if __name__ == "__main__":
+    input_dir = sys.argv[1]
+    check_for_dist_init(input_dir=input_dir)