move stuff to parts dir

parts/deploy.nix

@@ -0,0 +1,37 @@
+{
+  lib,
+  self,
+  inputs,
+  ...
+}: let
+  systems = ["etna"];
+
+  getDeploy = pkgs:
+    (pkgs.appendOverlays [
+      inputs.deploy-rs.overlay
+      (_: prev: {
+        deploy-rs = {
+          inherit (pkgs) deploy-rs;
+          inherit (prev.deploy-rs) lib;
+        };
+      })
+    ])
+    .deploy-rs;
+
+  toDeployNode = hostname: system: {
+    inherit hostname;
+    sshUser = "root";
+
+    profiles.system.path = let deploy = getDeploy system.pkgs; in deploy.lib.activate.nixos system;
+  };
+in {
+  flake = {
+    deploy = {
+      remoteBuild = true;
+      fastConnection = false;
+      nodes = lib.mapAttrs toDeployNode (lib.getAttrs systems self.nixosConfigurations);
+    };
+
+    checks = builtins.mapAttrs (system: deployLib: deployLib.deployChecks self.deploy) inputs.deploy-rs.lib;
+  };
+}