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+# Note on configuration change (2020-12-09):
+# For the past decade and a half, this package has created a symlink
+# /etc/localtime-copied-from and a file /etc/localtime to prevent
+# time skew until /usr is mounted. But having a separate /usr partition
+# hasn't really made sense for a long time and leads to all kinds of
+# bugs these days. We're going to make /etc/localtime a symlink just
+# like everyone else does so that programs that expect it to be a link
+# can fetch the timezone without requiring any special patches.
+# If you insist on making /usr a separate partition, you might want to
+# put the pointed-to directories and timezone file in your empty /usr
+# directory so that it is available before the real /usr is mounted.
+# Still not recommended though.
+
+# In a special case, we will handle the removal of the US/Pacific-New
+# timezone. A bit of background information on this:
+#
+# "US/Pacific-New' stands for 'Pacific Presidential Election Time',
+# which was passed by the House in April 1989 but never signed into law.
+# In presidential election years, this rule would have delayed the
+# PDT-to-PST switchover until after the election, to lessen the effect
+# of broadcast news election projections on last-minute west-coast
+# voters. "
+#
+# In nearly all cases, a machine that uses the US/Pacific-New timezone
+# has chosen it by mistake. In 2016, having this as the system timezone
+# actually led to clock errors, and after that it was decided that the
+# timezone (only of historical interest anyway) should be removed from
+# the timezone database.
+#
+# If we see that the machine's localtime-copied-from symlink is pointing
+# to US/Pacific-New, change it to point to US/Pacific instead.
+if [ "$(/bin/ls -l etc/localtime-copied-from 2> /dev/null | rev | cut -f 1,2 -d / | rev)" = "US/Pacific-New" ]; then
+  ( cd etc ; rm -rf localtime-copied-from )
+  ( cd etc ; ln -sf /usr/share/zoneinfo/US/Pacific localtime-copied-from )
+fi
+# Same with any /etc/localtime symlink:
+if [ -L etc/localtime ]; then
+  if [ "$(/bin/ls -l etc/localtime 2> /dev/null | rev | cut -f 1,2 -d / | rev)" = "US/Pacific-New" ]; then
+    ( cd etc ; rm -rf localtime )
+    ( cd etc ; ln -sf /usr/share/zoneinfo/US/Pacific localtime )
+  fi
+fi
+
+# If we already have a localtime-copied-from symlink, move it over as the
+# /etc/localtime symlink:
+if [ -L etc/localtime-copied-from ]; then
+  rm -f etc/localtime
+  mv etc/localtime-copied-from etc/localtime
+fi
+
+# Add the default timezone in /etc, if none exists:
+if [ ! -r etc/localtime ]; then
+  ( cd etc ; rm -rf localtime localtime-copied-from )
+  ( cd etc ; ln -sf /usr/share/zoneinfo/Factory localtime-copied-from )
+fi
+
+# Add a link to the timeconfig script in /usr/share/zoneinfo:
+( cd usr/share/zoneinfo ; rm -rf timeconfig )
+( cd usr/share/zoneinfo ; ln -sf /usr/sbin/timeconfig timeconfig )
+### Make the rest of the symbolic links in the zoneinfo database: