debian/changelog

+genomethreader (1.7.3+dfsg-3) unstable; urgency=medium
+
+  * Use defined LANG when building to avoid breaking the Built-Using
+    detection.
+
+ -- Sascha Steinbiss <satta@debian.org>  Thu, 23 Jan 2020 11:03:30 +0100
+
 genomethreader (1.7.3+dfsg-2) unstable; urgency=medium
 
   * Fix builds on some archs by removing -m32/-m64.

debian/rules

@@ -4,6 +4,8 @@ include /usr/share/dpkg/default.mk
 
 DH_VERBOSE := 1
 export LC_ALL=C.UTF-8
+export LANG=en_US.UTF-8
+export LANGUAGE=en_US.UTF-8
 export DEB_BUILD_MAINT_OPTIONS=hardening=+all
 export LIBVMATCH_PKG_VERSION=$(shell apt-cache policy libvmatch-dev | grep Installed | cut -f2 -d: | cut -c2-)