deploy script in shell

packages/default.nix

@@ -2,6 +2,7 @@
   inputs,
   lib,
   config,
+  self,
   ...
 }: {
   options.fleet.overlays = let
@@ -23,12 +24,17 @@
         statix.overlays.default
         nil.overlays.default
         alejandra.overlays.default
+        (final: _: {
+          inherit (disko.packages.${final.system}) disko;
+          inherit (self.packages.${final.system}) deploy;
+        })
       ];
     };
 
   config.perSystem = {
     system,
     lib,
+    pkgs,
     ...
   }: {
     _module.args.pkgs =
@@ -36,5 +42,15 @@
       (legacyPackages: legacyPackages.extend)
       inputs.nixpkgsUnstable.legacyPackages.${system}
       config.fleet.overlays;
+
+    packages =
+      lib.mapAttrs'
+      (name: value: {
+        inherit name;
+        value = pkgs.callPackage "${self}/packages/${name}" {};
+      })
+      (lib.filterAttrs
+        (_: type: type == "directory")
+        (builtins.readDir "${self}/packages"));
   };
 }

packages/deploy/default.nix

@@ -0,0 +1,10 @@
+{
+  nixos-rebuild,
+  writeShellApplication,
+  ...
+}:
+writeShellApplication {
+  name = "deploy";
+  text = builtins.readFile ./deploy.sh;
+  runtimeInputs = [nixos-rebuild];
+}

packages/deploy/deploy.sh

@@ -0,0 +1,6 @@
+host=${1-mothership}
+
+nixos-rebuild switch \
+    --flake ".#${host}" \
+    --target-host "root@${host}.fleet" \
+    "${@:2}"

shell/default.nix

@@ -13,6 +13,8 @@
         deadnix
         statix
         alejandra
+        disko
+        deploy
       ];
       shellHook = ''
         export RULES="$(git rev-parse --show-toplevel)/secrets/default.nix";