diff -Nru hedgewars-1.0.0/debian/changelog hedgewars-1.0.0/debian/changelog
--- hedgewars-1.0.0/debian/changelog	2020-08-10 10:06:38.000000000 +0000
+++ hedgewars-1.0.0/debian/changelog	2020-08-18 16:21:52.000000000 +0000
@@ -1,3 +1,10 @@
+hedgewars (1.0.0-11+rpi1) bullseye-staging; urgency=medium
+
+  [changes brought forward from 1.0.0-4+rpi1 by Peter Michael Green <plugwash@raspbian.org> at Sun, 24 Nov 2019 13:14:55 +0000]
+  * Force use of C.UTF-8 locale, the build fails under some locales (e.g. POSIX).
+
+ -- Raspbian forward porter <root@raspbian.org>  Tue, 18 Aug 2020 16:21:52 +0000
+
 hedgewars (1.0.0-11) unstable; urgency=medium
 
   * Upload workaround from upstream instead
diff -Nru hedgewars-1.0.0/debian/rules hedgewars-1.0.0/debian/rules
--- hedgewars-1.0.0/debian/rules	2020-08-10 06:26:02.000000000 +0000
+++ hedgewars-1.0.0/debian/rules	2020-08-18 16:21:52.000000000 +0000
@@ -1,5 +1,7 @@
 #!/usr/bin/make -f
 
+export LC_ALL=C.UTF-8
+
 %:
 	dh $@