Distinguish between pyodide-build and pypa/build

Author: agriyakhetarpal

cibuildwheel/frontend.py

@@ -1,3 +1,4 @@
+import os
 import dataclasses
 import shlex
 import typing
@@ -37,6 +38,16 @@ def options_summary(self) -> str | dict[str, str]:
 
 
 def _get_verbosity_flags(level: int, frontend: BuildFrontendName) -> list[str]:
+    # The pseudo build-frontend provided by pyodide-build does not yet support
+    # tuning its verbosity level, see https://github.com/pyodide/pyodide-build/issues/222
+    # We can use the "PYODIDE" env var to detect if we're running in that context.
+    if os.environ.get("PYODIDE") == "1":
+        if level != 0:
+            log.warning(
+                f"build_verbosity {level} is not supported for Pyodide builds. Ignoring."
+            )
+        return []
+
     if level < 0:
         if frontend == "pip":
             return ["-" + -level * "q"]