Revert "Prevent stupid mistakes"

This reverts commit 3aed3990a5.

deploy-flake.sh

@@ -0,0 +1,50 @@
+#! /usr/bin/env nix-shell
+#! nix-shell -i bash -p rsync
+
+# shellcheck shell=bash
+
+set -eou pipefail
+
+function show_help() {
+  echo "Usage:"
+  echo "$0 [--build-local] <host.hq.c3d2.de>"
+  echo "--help          Show this help."
+  echo "--build-local   Build config locally and copy it to the target system via nix copy"
+  exit 1
+}
+
+if [[ $# == 0 ]]; then
+  show_help
+fi
+
+while [[ $# -gt 0 ]]; do
+  case "${1:-}" in
+    "" | "-h" | "--help")
+      show_help
+      ;;
+    "--build-local")
+      build_local=true
+      ;;
+    *)
+      # strip hostname and user
+      host=$1
+      target=${1//.hq.c3d2.de/}
+      target=${target//.c3d2.de/}
+      ;;
+  esac
+  shift
+done
+
+if [[ -v build_local ]]; then
+  nix --experimental-features 'nix-command flakes' -Lv build ".#nixosConfigurations.$target.config.system.build.toplevel"
+  store_path=$(readlink -f result)
+  nix --experimental-features 'nix-command flakes' copy --to ssh://root@"$host" -v "$store_path"
+  ssh root@"$host" "$store_path/bin/switch-to-configuration" switch
+else
+  hostname=$(echo "$target" | cut -d . -f 1)
+
+  rsync -az "$(dirname "$0")" root@"$target":nix-config
+
+  echo "$hostname> nixos-rebuild switch"
+  exec ssh root@"$target" "nixos-rebuild --flake ./nix-config#$hostname switch"
+fi