numerous updates

updates.d/12-migrations.sh

@@ -0,0 +1,15 @@
+#!/bin/bash
+
+# Run one-time changes from migrations/ that haven't run on this machine yet.
+# This is how machines installed before a change to install.sh catch up, so a
+# change that should reach existing machines needs a migration as well. To add
+# one, create migrations/$(date +%s).sh; it runs with bash, once, on success.
+#
+# Runs after 10-pacman.sh so migrations install packages against fresh
+# package databases.
+
+COREDESKTOP="$HOME/.local/share/coredesktop"
+
+source "$COREDESKTOP/utils.sh"
+
+run_migrations