make the build reproducible (second try...)

PKGBUILD

@@ -23,7 +23,7 @@ pkgname='grub'
 pkgdesc='GNU GRand Unified Bootloader (2)'
 _pkgver=2.04
 pkgver=${_pkgver/-/}
-pkgrel=4
+pkgrel=5
 epoch=2
 url='https://www.gnu.org/software/grub/'
 arch=('x86_64')
@@ -143,6 +143,9 @@ prepare() {
 	./bootstrap \
 		--gnulib-srcdir="${srcdir}/gnulib/" \
 		--no-git
+
+	echo "Make translations reproducible..."
+	sed -i '1i /^PO-Revision-Date:/ d' po/*.sed
 }
 
 _build_grub-common_and_bios() {
@@ -179,7 +182,7 @@ _build_grub-common_and_bios() {
 		"${_configure_options[@]}"
 
 	if [ ! -z "${SOURCE_DATE_EPOCH}" ]; then
-		echo "Make the build reproducible..."
+		echo "Make info pages reproducible..."
 		touch -d "@${SOURCE_DATE_EPOCH}" $(find -name '*.texi')
 	fi