From 710af066d2e175db7d8197006087aa3c4f00f59d Mon Sep 17 00:00:00 2001
From: Chris Wood <chris@leastauthority.com>
Date: Thu, 3 Oct 2019 14:07:24 -0400
Subject: [PATCH] Skip pkg_resources.get_distribution call if frozen

Fixes: ticket:3259
---
 src/allmydata/version_checks.py | 20 +++++++++++++++-----
 1 file changed, 15 insertions(+), 5 deletions(-)

diff --git a/src/allmydata/version_checks.py b/src/allmydata/version_checks.py
index 761d6b6ea..9f084ff4b 100644
--- a/src/allmydata/version_checks.py
+++ b/src/allmydata/version_checks.py
@@ -23,11 +23,21 @@ from .util import (
     verlib,
 )
 
-_INSTALL_REQUIRES = list(
-    str(req)
-    for req
-    in pkg_resources.get_distribution(__appname__).requires()
-)
+if getattr(sys, 'frozen', None):
+    # "Frozen" python interpreters (i.e., standalone executables
+    # generated by PyInstaller and other, similar utilities) run
+    # independently of a traditional setuptools-based packaging
+    # environment, and so pkg_resources.get_distribution() cannot be
+    # used in such cases to gather a list of requirements at runtime
+    # (and because a frozen application is one that has already been
+    # "installed", an empty list suffices here).
+    _INSTALL_REQUIRES = []
+else:
+    _INSTALL_REQUIRES = list(
+        str(req)
+        for req
+        in pkg_resources.get_distribution(__appname__).requires()
+    )
 
 class PackagingError(EnvironmentError):
     """