Add workaround for pyodide/pyodide-build#143

Author: joerick

cibuildwheel/platforms/pyodide.py

@@ -3,6 +3,7 @@
 import os
 import shutil
 import sys
+import textwrap
 import tomllib
 import typing
 from collections.abc import Set
@@ -476,6 +477,32 @@ def build(options: Options, tmp_path: Path) -> None:
 
                 call("pyodide", "venv", venv_dir, env=virtualenv_create_env)
 
+                # WORKAROUND (should be upstreamed into pyodide)
+                base_python = (identifier_tmp_dir / "build" / "venv" / "bin" / "python").resolve()
+                (venv_dir / "bin" / "python-host-link").symlink_to(base_python)
+                (venv_dir / "bin" / "python-host").unlink()
+                (venv_dir / "bin" / "python-host").write_text(
+                    textwrap.dedent(f"""
+                        #!/bin/bash
+                        export PYTHONHOME={base_python.parent.parent}
+                        exec {venv_dir / "bin" / "python-host-link"} -s "$@"
+                    """)
+                )
+                (venv_dir / "bin" / "python-host").chmod(0o755)
+
+                # make the python3.12-host bin point to the python-host script
+                (venv_dir / "bin" / "python3.12-host").unlink()
+                (venv_dir / "bin" / "python3.12-host").symlink_to(venv_dir / "bin" / "python-host")
+
+                # make the first line of the pip executable point to the
+                # python-host script the `/usr/bin/env` bit is needed to use a
+                # script as a shebang interpreter, at least on macOS
+                pip_executable = venv_dir / "bin" / "pip"
+                pip_executable_content = pip_executable.read_text().splitlines()
+                pip_executable_content[0] = f"#!/usr/bin/env {venv_dir / 'bin' / 'python-host'}"
+                pip_executable.write_text("\n".join(pip_executable_content))
+                # END WORKAROUND
+
                 virtualenv_env["PATH"] = os.pathsep.join(
                     [
                         str(venv_dir / "bin"),