Seems like I'm really close...

deployments/seattle/flake.lock

@@ -82,7 +82,7 @@
         "evil-org-mode": "evil-org-mode",
         "evil-quick-diff": "evil-quick-diff",
         "explain-pause-mode": "explain-pause-mode",
-        "flake-utils": "flake-utils",
+        "flake-utils": "flake-utils_3",
         "nix-straight": "nix-straight",
         "nixpkgs": "nixpkgs",
         "nose": "nose",
@@ -262,6 +262,36 @@
       }
     },
     "flake-utils": {
+      "locked": {
+        "lastModified": 1637014545,
+        "narHash": "sha256-26IZAc5yzlD9FlDT54io1oqG/bBoyka+FJk5guaX4x4=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "bba5dcc8e0b20ab664967ad83d24d64cb64ec4f4",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "flake-utils_2": {
+      "locked": {
+        "lastModified": 1637014545,
+        "narHash": "sha256-26IZAc5yzlD9FlDT54io1oqG/bBoyka+FJk5guaX4x4=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "bba5dcc8e0b20ab664967ad83d24d64cb64ec4f4",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "flake-utils_3": {
       "locked": {
         "lastModified": 1623875721,
         "narHash": "sha256-A8BU7bjS5GirpAUv4QA+QnJ4CceLHkcXdRp4xITDB0s=",
@@ -276,12 +306,52 @@
         "type": "github"
       }
     },
+    "fudo-entities": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "fudo-lib": "fudo-lib",
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "narHash": "sha256-DnIQNMu2E6gQh0SJk4h6iz2cL/vK6VIobp35hS7qQmo=",
+        "path": "/state/fudo-entities",
+        "type": "path"
+      },
+      "original": {
+        "path": "/state/fudo-entities",
+        "type": "path"
+      }
+    },
+    "fudo-entities_2": {
+      "inputs": {
+        "flake-utils": "flake-utils_2",
+        "fudo-lib": "fudo-lib_3",
+        "nixpkgs": [
+          "fudo-nixos",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "narHash": "sha256-DnIQNMu2E6gQh0SJk4h6iz2cL/vK6VIobp35hS7qQmo=",
+        "path": "/state/fudo-entities",
+        "type": "path"
+      },
+      "original": {
+        "path": "/state/fudo-entities",
+        "type": "path"
+      }
+    },
     "fudo-home": {
       "inputs": {
         "doom-emacs": "doom-emacs",
         "home-manager": "home-manager",
         "niten-doom-config": "niten-doom-config",
-        "nixpkgs": "nixpkgs_2"
+        "nixpkgs": [
+          "fudo-nixos",
+          "nixpkgs"
+        ]
       },
       "locked": {
         "narHash": "sha256-TpFI+nD+c9JXhKKDBgIHJhIfveTScBD6gotTPt8tvg4=",
@@ -293,9 +363,55 @@
         "type": "path"
       }
     },
+    "fudo-lib": {
+      "locked": {
+        "narHash": "sha256-r8qffvJPWbBJmN32thMIxjdmY9X5VCc3TuyQyFAIdks=",
+        "path": "/state/fudo-lib",
+        "type": "path"
+      },
+      "original": {
+        "path": "/state/fudo-lib",
+        "type": "path"
+      }
+    },
+    "fudo-lib_2": {
+      "locked": {
+        "narHash": "sha256-gZAKO49RbpNWdmZaqrXnzCrLoSXsGV6H67f+mECJtCk=",
+        "path": "/state/fudo-lib",
+        "type": "path"
+      },
+      "original": {
+        "path": "/state/fudo-lib",
+        "type": "path"
+      }
+    },
+    "fudo-lib_3": {
+      "locked": {
+        "narHash": "sha256-r8qffvJPWbBJmN32thMIxjdmY9X5VCc3TuyQyFAIdks=",
+        "path": "/state/fudo-lib",
+        "type": "path"
+      },
+      "original": {
+        "path": "/state/fudo-lib",
+        "type": "path"
+      }
+    },
+    "fudo-lib_4": {
+      "locked": {
+        "narHash": "sha256-gZAKO49RbpNWdmZaqrXnzCrLoSXsGV6H67f+mECJtCk=",
+        "path": "/state/fudo-lib",
+        "type": "path"
+      },
+      "original": {
+        "path": "/state/fudo-lib",
+        "type": "path"
+      }
+    },
     "fudo-nixos": {
       "inputs": {
+        "fudo-entities": "fudo-entities_2",
         "fudo-home": "fudo-home",
+        "fudo-lib": "fudo-lib_4",
         "fudo-pkgs": "fudo-pkgs",
         "fudo-secrets": "fudo-secrets",
         "nixpkgs": [
@@ -303,7 +419,7 @@
         ]
       },
       "locked": {
-        "narHash": "sha256-1Z8ZrVFDTq9ohhYwD7Ti4KFYLgnRZG58OHvAQQAKZOU=",
+        "narHash": "sha256-mGmqObOimHmAWntx7GOHjLABKw+9ZMwVn19R7f6f93s=",
         "path": "/state/nixops/fudo-nixos",
         "type": "path"
       },
@@ -464,26 +580,11 @@
     },
     "nixpkgs_2": {
       "locked": {
-        "lastModified": 1636944046,
+        "lastModified": 1637875414,
-        "narHash": "sha256-74KLDsiWSBsYXKj/ql9EGbw1TbIJRE7clFkhl30HV/c=",
+        "narHash": "sha256-Ica++SXFuLyxX9Q7YxhfZulUif6/gwM8AEQYlUxqSgE=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "46251a79f752ae1d46ef733e8e9760b6d3429da4",
+        "rev": "3bea86e918d8b54aa49780505d2d4cd9261413be",
-        "type": "github"
-      },
-      "original": {
-        "id": "nixpkgs",
-        "ref": "nixos-21.05",
-        "type": "indirect"
-      }
-    },
-    "nixpkgs_3": {
-      "locked": {
-        "lastModified": 1637316267,
-        "narHash": "sha256-hfAA/0W3tycKKOSwP7Xt6FXLG9h/FgCu45wdGubHtV0=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "24528474d2b3370f2f23879a557ae2cc92a5d50b",
         "type": "github"
       },
       "original": {
@@ -630,9 +731,11 @@
     },
     "root": {
       "inputs": {
+        "fudo-entities": "fudo-entities",
+        "fudo-lib": "fudo-lib_2",
         "fudo-nixos": "fudo-nixos",
         "fudo-secrets": "fudo-secrets_2",
-        "nixpkgs": "nixpkgs_3"
+        "nixpkgs": "nixpkgs_2"
       }
     },
     "rotate-text": {

deployments/seattle/flake.nix

@@ -11,14 +11,26 @@
       # url = "git+ssh://fudo_git@git.fudo.org:2222/fudosys/NixOS.git?ref=nixops-flake";
       inputs.nixpkgs.follows = "nixpkgs";
     };
+
+    fudo-entities = {
+      url = "path:/state/fudo-entities";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+
+    fudo-lib = {
+      url = "path:/state/fudo-lib";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
   };
 
-  outputs = { self, nixpkgs, fudo-nixos, fudo-secrets, ... } @ inputs:
+  outputs = { self, nixpkgs, fudo-nixos, fudo-entities, fudo-secrets, ... } @ inputs:
     with nixpkgs.lib; {
       nixopsConfigurations.default = let
         deployment-hosts = filterAttrs
-          (hostname: hostOpts: hostOpts.domain == "sea.fudo.org")
+          (hostname: hostOpts:
-          fudo-nixos.fudoHosts;
+            hostOpts.domain == "sea.fudo.org" &&
+            hostOpts.nixos-system)
+          fudo-entities.entities.hosts;
 
         build-timestamp = self.sourceInfo.lastModified;
 
@@ -26,7 +38,7 @@
           inherit inputs build-timestamp;
         };
 
-        host-configs = mapAttrs host-gen-config deployment-hosts;
+        common-configs = mapAttrs host-gen-config deployment-hosts;
       in {
         inherit nixpkgs;
 
@@ -34,6 +46,6 @@
           description = "Seattle NixOps network";
           enableRollback = true;
         };
-      } // host-configs;
+      } // common-configs;
     };
 }

deployments/seattle/host-config.nix

@@ -1,6 +1,6 @@
-inputs: build-timestamp: hostname: hostOpts:
+{ inputs,  build-timestamp, ... }:
 
-{ config, ... }:
+hostname: hostOpts:
 
 let
   pkgs-for = system: import inputs.nixpkgs {
@@ -17,25 +17,26 @@ let
     };
   };
 
-  host-ip = hostname:
+  host-ip =
-    inputs.fudo-nixos.fudoNetworks.${hostOpts.domain}.hosts.${hostname}.ipv4-address;
+    inputs.fudo-entities.entities.zones.${hostOpts.domain}.hosts.${hostname}.ipv4-address;
 
+in { config, ... }: {
+  modules = [
+    inputs.fudo-nixos.nixosConfigurations.${hostname}
+  ];
 
-in {
+  imports = [
-  config = {
+    inputs.fudo-secrets.nixosModule
-    nixpkgs.pkgs = pkgs-for hostOpts.arch;
+    inputs.fudo-lib.nixosModule
+  ];
 
-    imports = [
+  nixpkgs.pkgs = pkgs-for hostOpts.arch;
-      inputs.fudo-nixos.nixosModule
-      inputs.fudo-secrets.nixosModule
-    ];
 
-    instance = {
+  instance = {
-      inherit hostname build-timestamp;
+    inherit hostname build-timestamp;
-    };
+  };
 
-    deployments = {
+  deployment = {
-      targetHost = host-ip hostname;
+    targetHost = host-ip;
-    };
   };
 }