update: Update flake inputs

flake.nix

@@ -81,21 +81,18 @@
       # deploy-rs unfortunately uses an `import nixpkgs`, and its
       # library functions depend on an instantiated nixpkgs, so we
       # can't get around multi-nixpkgs-eval.
-      inherit
-        (import nixpkgs {
+      deployRsPackages = import nixpkgs {
         inherit system;
         overlays = [
           inputs.deploy-rs.overlays.default
-            (_: prev: {
+          (final: prev: {
             deploy-rs = {
               inherit (nixpkgs.legacyPackages.${system}) deploy-rs;
               inherit (prev.deploy-rs) lib;
             };
           })
         ];
-        })
-        deploy-rs
-        ;
+      };
     in
     {
       ##################
@@ -123,7 +120,7 @@
 
           profiles.system = {
             user = "root";
-            path = deploy-rs.lib.activate.nixos self.nixosConfigurations.hetzner-1;
+            path = deployRsPackages.deploy-rs.lib.${system}.activate.nixos self.nixosConfigurations.hetzner-1;
           };
 
           sshUser = "tlater";
@@ -177,7 +174,7 @@
 
           packages = nixpkgs.lib.attrValues {
             inherit (sops-nix.packages.${system}) sops-import-keys-hook sops-init-gpg-key;
-            inherit (deploy-rs) deploy-rs;
+            inherit (deployRsPackages.deploy-rs) deploy-rs;
           };
         };