snapshot of https://github.com/zulip/zulip.git @ 48c69911c7dd4e03b20552eb3bd77ad8151c1357 (2026-09-15)

scripts/lib/setup_path.py

@@ -0,0 +1,28 @@
+"""
+Use libraries from a virtualenv (by modifying sys.path) in production.
+"""
+
+import os
+import sys
+
+
+def setup_path() -> None:
+    BASE_DIR = os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+    venv = os.path.realpath(os.path.join(BASE_DIR, ".venv"))
+    if sys.prefix != venv:
+        sys.path = list(
+            filter(
+                # zulip-py3-venv was an historical virtualenv symlink
+                lambda p: "/zulip-py3-venv/" not in p and "/.venv/" not in p,
+                sys.path,
+            )
+        )
+        activate_this = os.path.join(venv, "bin", "activate_this.py")
+        activate_locals = dict(__file__=activate_this)
+        with open(activate_this) as f:
+            exec(f.read(), activate_locals)  # noqa: S102
+        # Check that the python version running this function
+        # is same as python version that created the virtualenv.
+        python_version = "python{}.{}".format(*sys.version_info[:2])
+        if not os.path.exists(os.path.join(venv, "lib", python_version)):
+            raise RuntimeError(venv + " was not set up for this Python version")