diff --git a/cronjob-update-packages-list.new b/cronjob-update-packages-list.new
new file mode 100644
index 0000000..5503f68
--- /dev/null
+++ b/cronjob-update-packages-list.new
@@ -0,0 +1,55 @@
+#!/bin/bash
+
+# FIXME: This is broken.
+
+# Check for an /etc/os-release.
+[[ ! -e /etc/os-release ]] && {
+  printf "%s: %s\\n" "${BASH_SOURCE[0]}" "No /etc/os-release to determine system." >&2
+  exit 1
+}
+
+# Source system info.
+# shellcheck disable=SC1091
+. /etc/os-release
+
+PKGLIST_CUR_MD5="$(md5sum /etc/pkglist 2>/dev/null)"
+TEMPLATE_CUR_MD5="$(md5sum /etc/slackpkg/templates/$(hostname --short).template 2>/dev/null)"
+
+# Create package list depending on system type.
+case "$ID" in
+  'alpine')
+    apk list -I | cut -d' ' -f1 | rev | cut -d- -f3- | rev >/etc/pkglist || exit 1
+    ;;
+  'debian'|'devuan'|'ubuntu')
+    dpkg-query --show --showformat='${Package}\n' >/etc/pkglist || exit 1
+    ;;
+  'slackware')
+    [[ -L /etc/pkglist ]] && rm -f /etc/pkglist
+    printf "%s\\n" /var/log/packages/* | rev | cut -d- -f4- | rev >/etc/pkglist || exit 1
+    slackpkg -batch=on -default_answer=y generate-template "$(hostname --short)" >/dev/null || exit 1
+    ;;
+  'void')
+    xbps-query -l | awk '{ print $2 }' | rev | cut -d- -f2- | rev >/etc/pkglist || exit 1
+    ;;
+  *)
+    printf "%s: %s\\n" "${BASH_SOURCE[0]}" "Unsupported system." >&2
+    exit 1
+    ;;
+esac
+
+cd /etc || exot 1
+git rev-parse --show-toplevel >/dev/null 2>&1 && {
+  [[ -z "$PKGLIST_CUR_MD5" ]] && [[ -e pkglist ]] && {
+    git add pkglist >/dev/null || exit 1
+  }
+  [[ -z "$TEMPLATE_CUR_MD5" ]] && [[ -e "slackpkg/templates/$(hostname --short).template" ]] && {
+    git add "slackpkg/templates/$(hostname --short).template" >/dev/null || exit 1
+  }
+  { [[ -e pkglist ]] && [[ "$(md5sum pkglist 2>/dev/null)" != "$PKGLIST_CUR_MD5" ]]; } || \
+      { [[ -e "slackpkg/templates/$(hostname --short).template" ]] && \
+      [[ "$(md5sum "slackpkg/templates/$(hostname --short).template" 2>/dev/null)" != "$TEMPLATE_CUR_MD5" ]]; } && {
+    git commit -m "Update pkglist (and/or." pkglist >/dev/null || exit 1
+  }
+}
+
+exit 0