Move generation of debian/tests/control.tmp to an external script.

debian/rules

@@ -63,21 +63,7 @@ favicon.png: doc/logo.svg
 	inkscape -w 32 -h 32 -e $@ $<
 
 override_dh_auto_clean:
-	@echo "Generating the debian/tests/control file..."
-	@echo "# DON'T MANUALLY MODIFY!" > debian/tests/control.tmp
-	@echo "# EDIT debian/tests/control.in INSTEAD!" >> debian/tests/control.tmp
-	@echo "#" >> debian/tests/control.tmp
-	@cat debian/tests/control.in >> debian/tests/control.tmp
-	@sed -i "s#%RECOMMENDS%#$(shell bin/diffoscope --list-debian-substvars | awk -F= '/diffoscope:Recommends/ { print $$2 }')#" debian/tests/control.tmp
-	@sed -i "s#%PYRECOMMENDS%#$(shell python3 -c "import distutils.core; \
-		setup = distutils.core.run_setup('setup.py'); \
-		print(', '.join(sorted(['python3-{}'.format(x) for y in setup.extras_require.values() for x in y])))" \
-	)#" debian/tests/control.tmp
-	@sed -i "s,python3-python-debian,python3-debian," debian/tests/control.tmp
-	@sed -i "s,python3-rpm-python,python3-rpm," debian/tests/control.tmp
-	@sed -i "s,apktool,apktool [!ppc64el !s390x]," debian/tests/control.tmp
-	@sed -i "s,fp-utils,fp-utils [!ppc64el !s390x]," debian/tests/control.tmp
-	@sed -i "s,oggvideotools,oggvideotools [!s390x]," debian/tests/control.tmp
+	debian/tests/control.sh
 	@set -e ; if ! diff -q debian/tests/control debian/tests/control.tmp ; then \
 		echo ;\
 		echo "The generated control file differs from the actual one." ;\

debian/tests/control.sh

+#!/bin/sh
+
+echo "Generating the debian/tests/control file..."
+
+echo "# DON'T MANUALLY MODIFY!" > debian/tests/control.tmp
+echo "# EDIT debian/tests/control.in INSTEAD!" >> debian/tests/control.tmp
+echo "#" >> debian/tests/control.tmp
+
+cat debian/tests/control.in >> debian/tests/control.tmp
+
+sed -i "s#%RECOMMENDS%#$(bin/diffoscope --list-debian-substvars | awk -F= '/diffoscope:Recommends/ { print $2 }')#" debian/tests/control.tmp
+
+sed -i "s#%PYRECOMMENDS%#$(python3 -c "import distutils.core; \
+	setup = distutils.core.run_setup('setup.py'); \
+	print(', '.join(sorted(['python3-{}'.format(x) for y in setup.extras_require.values() for x in y])))" \
+)#" debian/tests/control.tmp
+
+
+sed -i "s,python3-python-debian,python3-debian," debian/tests/control.tmp
+sed -i "s,python3-rpm-python,python3-rpm," debian/tests/control.tmp
+sed -i "s,apktool,apktool [!ppc64el !s390x]," debian/tests/control.tmp
+sed -i "s,fp-utils,fp-utils [!ppc64el !s390x]," debian/tests/control.tmp
+sed -i "s,oggvideotools,oggvideotools [!s390x]," debian/tests/control.tmp