From 011271c769552b284cf7cf2081eb28e999f42e41 Mon Sep 17 00:00:00 2001
From: Hartmut Goebel <h.goebel@crazy-compilers.com>
Date: Tue, 25 Oct 2016 18:15:29 +0200
Subject: gnu: python-flake8: Remove python byte-code files from source.

* gnu/packages/python.scm (python-flake8)[source]: Add snippet.
---
 gnu/packages/python.scm | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/gnu/packages/python.scm b/gnu/packages/python.scm
index a2aebbd829..823624fc1b 100644
--- a/gnu/packages/python.scm
+++ b/gnu/packages/python.scm
@@ -5602,7 +5602,15 @@ (define-public python-flake8
         (uri (pypi-uri "flake8" version))
         (sha256
           (base32
-            "0bs9cz4fr99r2rwig1b8jwaadl1nan7kgpdzqwj0bwbckwbmh7nc"))))
+            "0bs9cz4fr99r2rwig1b8jwaadl1nan7kgpdzqwj0bwbckwbmh7nc"))
+        (modules '((guix build utils)))
+        (snippet
+         '(begin
+            ;; Remove pre-compiled .pyc files from source.
+            (for-each delete-file-recursively
+                      (find-files "." "__pycache__" #:directories? #t))
+            (for-each delete-file (find-files "." "\\.pyc$"))
+            #t))))
     (build-system python-build-system)
     (propagated-inputs
       `(("python-pep8" ,python-pep8)
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