From 6f98aedfa011e20fce1656af04b0a46ca3fabb48 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sandro=20J=C3=A4ckel?= <sandro.jaeckel@gmail.com>
Date: Sat, 7 Jan 2023 00:55:45 +0100
Subject: [PATCH] Error when running nixos-rebuild for a microvm

---
 packages.nix | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/packages.nix b/packages.nix
index a97eb502..7c197169 100644
--- a/packages.nix
+++ b/packages.nix
@@ -111,9 +111,16 @@ lib.attrsets.mapAttrs
         # remote machine and bulding and switching there.
         # Can be run with `nix run c3d2#…-nixos-rebuild switch`
         "${name}-nixos-rebuild" = pkgs.writeScriptBin "${name}-nixos-rebuild" ''
-          #!${pkgs.runtimeShell} -ex
+          #!${pkgs.runtimeShell} -e
+
+          if nix eval .#nixosConfigurations.${name}.config.c3d2.deployment.server &>/dev/null; then
+            echo "microvms cannot be updated with nixos-rebuild. Use nix run .#microvm-update-${name}"
+            exit 2
+          fi
+
           [[ $(ssh ${target} cat /etc/hostname) == ${name} ]]
           nix copy --no-check-sigs --to ssh-ng://${target} ${inputPaths}
+
           # use nixos-rebuild from target config
           nixosRebuild=$(nix build ${self}#nixosConfigurations.${name}.config.system.build.nixos-rebuild --no-link --json | ${pkgs.jq}/bin/jq -r '.[0].outputs.out')
           nix copy --no-check-sigs --to ssh-ng://${target} $nixosRebuild