update readme

README.md

@@ -4,8 +4,6 @@ Use at your own risk.
 
 ## Deploying
 
-The `./deploy` script generates a NixOS configuration that pins the current git `HEAD` of this project and copies the resulting `configuration.nix` to the destionation host. Then it tests the new confiurations and rolls back if it fails.
-
-## TODO
-
-- Use `nix-copy-closure`?
+```
+nix run .#deploy $TARGET_HOST
+```

outputs.nix

@@ -17,7 +17,10 @@
   {
     apps.deploy = {
       type = "app";
-      program = "${selfPkgs.deploy}/bin/deploy";
+      program = toString (pkgs.writeScript "deploy" ''
+        #!${pkgs.runtimeShell}
+        nixos-rebuild switch --upgrade --flake ".#$1" --target-host "$1.dadada.li" --build-host localhost --use-remote-sudo
+      '');
     };
     apps.hm-switch = {
       type = "app";