Add PYTHONPATH for all platforms in isolated environment

src/isolated_environment/api.py

@@ -80,10 +80,8 @@ def _get_activated_environment(
         out_env["PATH"] = str(env_path / "bin") + ":" + out_env["PATH"]
 
     # set PYTHONPATH to make sure Python finds installed packages
-    if sys.platform == "win32":
-        out_env["PYTHONPATH"] = str(env_path / "Lib" / "site-packages")
-    else:
-        out_env["PYTHONPATH"] = str(env_path / "lib" / "site-packages")
+    out_env["PYTHONPATH"] = str(env_path / "lib" / "site-packages")
+
 
     scripts = "Scripts" if sys.platform == "win32" else "bin"
     python_name = "python.exe" if sys.platform == "win32" else "python"

tests/test_aicode.py

@@ -0,0 +1,41 @@
+# pylint: disable=R0801
+
+"""
+Tests against a bug in aicode which uses isolated-environment.
+"""
+
+import subprocess
+import unittest
+from pathlib import Path
+from tempfile import TemporaryDirectory
+
+from isolated_environment.api import IsolatedEnvironment
+
+HERE = Path(__file__).parent.absolute()
+
+
+class AiderChatTester(unittest.TestCase):
+    """Main tester class."""
+
+    def test_ensure_installed(self) -> None:
+        """Tests that ensure_installed works."""
+        with TemporaryDirectory() as tmp_dir:
+            iso_env = IsolatedEnvironment(
+                Path(tmp_dir) / "venv",
+                requirements="advanced-aicode",
+                full_isolation=True,
+            )
+            # now create an inner environment without the static-ffmpeg
+            cmd_list = ["aicode", "--help"]
+            cp: subprocess.CompletedProcess = iso_env.run(
+                cmd_list, shell=False, capture_output=True
+            )
+            stdout = cp.stdout
+            stderr = cp.stderr
+            print(f"stdout: {stdout}")
+            print(f"stderr: {stderr}")
+            self.assertEqual(0, cp.returncode)
+
+
+if __name__ == "__main__":
+    unittest.main()