gnu: Add missing copyright header.

diff --git a/gnu/packages/python-compression.scm b/gnu/packages/python-compression.scm
index c7354ba..63335a5 100644 (file)
--- a/gnu/packages/python-compression.scm
+++ b/gnu/packages/python-compression.scm
@@ -4,6 +4,7 @@
 ;;; Copyright © 2017 ng0 <ng0@n0.is>
 ;;; Copyright © 2017 Julien Lepiller <julien@lepiller.eu>
 ;;; Copyright © 2018, 2019 Efraim Flashner <efraim@flashner.co.il>
+;;; Copyright © 2020 Nicolas Goaziou <mail@nicolasgoaziou.fr>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;