Merge pull request #1321 from cfengine/ENT-10739/3.21

ENT-10739: Improved locale env vars safety during installation for postgresql (3.21)

packaging/common/script-templates/script-common.sh

@@ -1,18 +1,5 @@
-# These can have bad effects on certain commands if set incorrectly. Found
-# when investigating why PostgreSQL was not starting.
-unset LANG
-unset LC_ADDRESS
-unset LC_ALL
-unset LC_IDENTIFICATION
-unset LC_MEASUREMENT
-unset LC_MONETARY
-unset LC_NAME
-unset LC_NUMERIC
-unset LC_PAPER
-unset LC_TELEPHONE
-unset LC_TIME
-
-
+# postgresql docs, https://www.postgresql.org/docs/current/locale.html, recommend using C locale unless otherwise needed
+export LC_ALL=C # overrides all other env vars: https://www.gnu.org/software/libc/manual/html_node/Locale-Categories.html
 # Upgrade detection is a mess. It is often difficult to tell, especially from
 # the postinstall script, so we use the package-upgrade.txt file to remember.
 case "$PKG_TYPE" in