packages: fix microvm again

can't run nix-env cause of optimization we don't have nix-daemon and the
path is not registered but somehow now it is working without it...

packages.nix

@@ -219,12 +219,11 @@ lib.attrsets.mapAttrs
               ssh ${target} bash -e <<END
               set -eou pipefail
 
-              if [[ $(cat /etc/hostname) != ${name} ]]; then
+              if [[ \$(cat /etc/hostname) != ${name} ]]; then
                 echo "hostname of the target machine does not match, please manually investigate!"
-                echo "  $(ssh ${target} cat /etc/hostname) != ${name}"
+                echo "  $(cat /etc/hostname) != ${name}"
                 exit 2
               fi
-              ${discardStringCtx hostConfig.nix.package}/bin/nix-env -p /nix/var/nix/profiles/system --set ${toplevelOutPath}
               ${toplevelOutPath}/bin/switch-to-configuration "''${@:-switch}"
             END
             # ^ yes, this is required to be like this