From: Rob Savoury <savoury@savos.tech>
Date: Wed, 13 Oct 2021 21:43:11 -0700
Subject: Allow setting pbuilder build locale

A notable limitation of pbuilder is that the locale cannot be set for the
build and defaults to "C" rather than "C.UTF-8" as set by sbuild for all
official Debian and Ubuntu package builds. This patch allows setting the
locale (both LANG and LC_ALL) via /etc/pbuilderrc or $HOME/.pbuilderrc and
thus makes it very easy to use the same locale as for all official builds.
---
 debian/changelog      | 9 +++++++++
 pbuilder-buildpackage | 2 +-
 pbuilderrc            | 4 ++++
 3 files changed, 14 insertions(+), 1 deletion(-)

diff --git pbuilder-0.231/debian/changelog pbuilder-0.231ubuntu0/debian/changelog
index 08cc375..7ac4322 100644
--- pbuilder-0.231/debian/changelog
+++ pbuilder-0.231ubuntu0/debian/changelog
@@ -1,3 +1,12 @@
+pbuilder (0.231ubuntu0) UNRELEASED; urgency=medium
+
+  * buildpackage:
+    + Include LANG and LC_ALL environment variables to use inside pbuilder
+  * pbuilderrc:
+    + Default to BUILD_LANG='C.UTF-8' and BUILD_LC_ALL='C.UTF-8'
+
+ -- Rob Savoury <savoury@savos.tech>  Wed, 13 Oct 2021 21:35:26 -0700
+
 pbuilder (0.231) unstable; urgency=medium
 
   [ Mattia Rizzolo ]
diff --git pbuilder-0.231/pbuilder-buildpackage pbuilder-0.231ubuntu0/pbuilder-buildpackage
index 846ee69..3302bcc 100755
--- pbuilder-0.231/pbuilder-buildpackage
+++ pbuilder-0.231ubuntu0/pbuilder-buildpackage
@@ -182,7 +182,7 @@ log.i "Building the package"
 
 executehooks "A"
 
-ENV_PREFIX="env PATH=\"$PATH\" HOME=\"$BUILD_HOME\""
+ENV_PREFIX="env LANG=\"$BUILD_LANG\" LC_ALL=\"$BUILD_LC_ALL\" PATH=\"$PATH\" HOME=\"$BUILD_HOME\""
 DPKG_COMMANDLINE="$ENV_PREFIX dpkg-buildpackage -us -uc $DEBBUILDOPTS"
 
 if [ "${SOURCE_ONLY_CHANGES}" = "yes" ]; then
diff --git pbuilder-0.231/pbuilderrc pbuilder-0.231ubuntu0/pbuilderrc
index a08e896..f5afdd3 100644
--- pbuilder-0.231/pbuilderrc
+++ pbuilder-0.231ubuntu0/pbuilderrc
@@ -128,6 +128,10 @@ DEBOOTSTRAPOPTS=(
 # the chroot is used.
 APTKEYRINGS=()
 
+# Set BUILD_LANG and BUILD_LC_ALL to use inside pbuilder: default for both is "C.UTF-8"
+export BUILD_LANG="C.UTF-8"
+export BUILD_LC_ALL="C.UTF-8"
+
 # Set the PATH I am going to use inside pbuilder: default is "/usr/sbin:/usr/bin:/sbin:/bin"
 export PATH="/usr/sbin:/usr/bin:/sbin:/bin"