From cf495c934e3cc9c642edb8ddb783db64618682a5 Mon Sep 17 00:00:00 2001
From: Maxim Cournoyer <maxim.cournoyer@gmail.com>
Date: Fri, 20 Nov 2020 01:00:25 -0500
Subject: build-system/python: Set PYTHONDONTWRITEBYTECODE.

* guix/build/python-build-system.scm (enable-bytecode-determinism): Set
PYTHONDONTWRITEBYTECODE.
---
 guix/build/python-build-system.scm | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'guix')

diff --git a/guix/build/python-build-system.scm b/guix/build/python-build-system.scm
index 4a07496d22..1179315ce2 100644
--- a/guix/build/python-build-system.scm
+++ b/guix/build/python-build-system.scm
@@ -260,6 +260,9 @@ installed with setuptools."
   "Improve determinism of pyc files."
   ;; Use deterministic hashes for strings, bytes, and datetime objects.
   (setenv "PYTHONHASHSEED" "0")
+  ;; Prevent Python from creating .pyc files when loading modules (such as
+  ;; when running a test suite).
+  (setenv "PYTHONDONTWRITEBYTECODE" "1")
   #t)
 
 (define %standard-phases
-- 
cgit v1.2.3