try and fix deployment

scripts/server-autodeploy.sh

@@ -48,15 +48,17 @@ runas git tag -v "$latest" || {
 sha=$(runas git rev-list -1 "$latest")
 report_status "pending" "deploying $latest" "$sha"
 
-runas git checkout "$latest"
-runas tee .nixos-label <<< "$latest" >/dev/null
-runas git add .nixos-label
+label_dir=$(mktemp -d)
+echo "$latest" > "$label_dir/label"
+flake_url="git+${GITEA_URL}/${GITEA_REPO}?ref=refs/tags/${latest}&rev=${sha}#$HOSTNAME"
 
-if nixos-rebuild switch --flake ".#$HOSTNAME"; then
+if nixos-rebuild switch --flake "$flake_url" --override-input deploy-label "path:$label_dir"; then
+  rm -rf "$label_dir"
   echo "$latest" > "$STATE_DIR/tag"
   report_status "success" "deployed $latest" "$sha"
   echo "deployed $latest"
 else
+  rm -rf "$label_dir"
   report_status "failure" "nixos-rebuild failed" "$sha"
   exit 1
 fi