Scripting stuff

safe-remote-upgrade.bash

@@ -0,0 +1,44 @@
+#!/usr/bin/env bash
+
+usage() {
+  echo 'safe-remote-upgrade.bash $flake $target_host'
+}
+
+error() {
+  echo "error: $1"
+  usage
+}
+
+if [[ -z $1 ]]; then
+  echo "error: no flake specified"
+  usage
+  exit 1
+fi
+flake="$1"; shift
+
+if [[ -z $1 ]]; then
+  echo "error: no target host specified"
+  usage
+  exit 1
+fi
+target_host="$1"; shift
+
+git add -A
+
+ssh "root@$target_host" "bash -c '
+  set -m
+  # sleep 5 mins
+  (sleep 300; reboot;) &
+  jobs -p
+  bg
+  disown
+'"
+
+nix run nixpkgs#nixos-rebuild -- --flake "$flake" \
+  --target-host "root@$target_host" test --show-trace
+
+echo "Upgrade ready for verification. If you still have SSH access you can bail out without waiting with the following command:"
+echo "  ssh 'root@$target_host' nixos-rebuild --rollback switch"
+echo
+echo 'Done!'
+