diff --git a/flake.lock b/flake.lock
index 31a6e49..0b7f4e6 100644
--- a/flake.lock
+++ b/flake.lock
@@ -89,6 +89,21 @@
       }
     },
     "crane": {
+      "locked": {
+        "lastModified": 1763938834,
+        "narHash": "sha256-j8iB0Yr4zAvQLueCZ5abxfk6fnG/SJ5JnGUziETjwfg=",
+        "owner": "ipetkov",
+        "repo": "crane",
+        "rev": "d9e753122e51cee64eb8d2dddfe11148f339f5a2",
+        "type": "github"
+      },
+      "original": {
+        "owner": "ipetkov",
+        "repo": "crane",
+        "type": "github"
+      }
+    },
+    "crane_2": {
       "locked": {
         "lastModified": 1760924934,
         "narHash": "sha256-tuuqY5aU7cUkR71sO2TraVKK2boYrdW3gCSXUkF4i44=",
@@ -241,6 +256,27 @@
         "type": "github"
       }
     },
+    "flake-parts": {
+      "inputs": {
+        "nixpkgs-lib": [
+          "harmonia",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1763759067,
+        "narHash": "sha256-LlLt2Jo/gMNYAwOgdRQBrsRoOz7BPRkzvNaI/fzXi2Q=",
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "rev": "2cccadc7357c0ba201788ae99c4dfa90728ef5e0",
+        "type": "github"
+      },
+      "original": {
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "type": "github"
+      }
+    },
     "flake-utils": {
       "inputs": {
         "systems": "systems"
@@ -427,6 +463,31 @@
         "type": "github"
       }
     },
+    "harmonia": {
+      "inputs": {
+        "crane": "crane",
+        "flake-parts": "flake-parts",
+        "nix": "nix",
+        "nixpkgs": [
+          "nixpkgs-unstable"
+        ],
+        "treefmt-nix": "treefmt-nix"
+      },
+      "locked": {
+        "lastModified": 1765032623,
+        "narHash": "sha256-BbtN5NFN2RU3KP2TLA6zOoiv5MZXWqN1mXxIkKY8Kx4=",
+        "owner": "devplayer0",
+        "repo": "harmonia",
+        "rev": "310e2b2c6583710c52531785f1245d9621284310",
+        "type": "github"
+      },
+      "original": {
+        "owner": "devplayer0",
+        "ref": "cache-config-daemon-store",
+        "repo": "harmonia",
+        "type": "github"
+      }
+    },
     "home-manager": {
       "inputs": {
         "nixpkgs": [
@@ -519,6 +580,22 @@
         "type": "github"
       }
     },
+    "nix": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1764532838,
+        "narHash": "sha256-hw4J7wfqXWBCvsMVXPS4nvkcSeTXAtR5h9Ylv7a7dBA=",
+        "owner": "nixos",
+        "repo": "nix",
+        "rev": "8be9507a88f466dd44e6e56cd00167fa10e995b8",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "repo": "nix",
+        "type": "github"
+      }
+    },
     "nixGL": {
       "inputs": {
         "flake-utils": "flake-utils_7",
@@ -704,7 +781,7 @@
     "ragenix": {
       "inputs": {
         "agenix": "agenix",
-        "crane": "crane",
+        "crane": "crane_2",
         "flake-utils": "flake-utils_8",
         "nixpkgs": [
           "nixpkgs-unstable"
@@ -734,6 +811,7 @@
         "deploy-rs": "deploy-rs",
         "devshell": "devshell_3",
         "flake-utils": "flake-utils_6",
+        "harmonia": "harmonia",
         "home-manager-stable": "home-manager-stable",
         "home-manager-unstable": "home-manager-unstable",
         "impermanence": "impermanence",
@@ -945,6 +1023,27 @@
         "type": "github"
       }
     },
+    "treefmt-nix": {
+      "inputs": {
+        "nixpkgs": [
+          "harmonia",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1761311587,
+        "narHash": "sha256-Msq86cR5SjozQGCnC6H8C+0cD4rnx91BPltZ9KK613Y=",
+        "owner": "numtide",
+        "repo": "treefmt-nix",
+        "rev": "2eddae033e4e74bf581c2d1dfa101f9033dbd2dc",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "treefmt-nix",
+        "type": "github"
+      }
+    },
     "utils": {
       "inputs": {
         "systems": "systems_3"
diff --git a/flake.nix b/flake.nix
index cdbef6d..e3eb009 100644
--- a/flake.nix
+++ b/flake.nix
@@ -34,6 +34,9 @@
     boardie.inputs.nixpkgs.follows = "nixpkgs-unstable";
     nixGL.url = "github:nix-community/nixGL";
     nixGL.inputs.nixpkgs.follows = "nixpkgs-unstable";
+    # harmonia.url = "github:nix-community/harmonia";
+    harmonia.url = "github:devplayer0/harmonia/cache-config-daemon-store";
+    harmonia.inputs.nixpkgs.follows = "nixpkgs-unstable";
 
     # Packages not in nixpkgs
     sharry.url = "github:eikek/sharry";
diff --git a/nixos/boxes/colony/vms/shill/containers/object.nix b/nixos/boxes/colony/vms/shill/containers/object.nix
index 7c5697f..779f361 100644
--- a/nixos/boxes/colony/vms/shill/containers/object.nix
+++ b/nixos/boxes/colony/vms/shill/containers/object.nix
@@ -89,12 +89,17 @@ in
             {
               users = {
                 harmonia = {
+                isSystemUser = true;
+                group = "harmonia";
                   shell = pkgs.bashInteractive;
                   openssh.authorizedKeys.keyFiles = [
                     lib.my.c.sshKeyFiles.harmonia
                   ];
                 };
               };
+              groups = {
+                harmonia = { };
+              };
             }
           ];
 
@@ -127,13 +132,24 @@ in
                   };
                 }
               ];
-              harmonia = {
-                environment.NIX_REMOTE = "/var/lib/harmonia";
+
+              harmonia-dev = {
+                # environment.RUST_LOG = mkForce "trace";
+                # serviceConfig = {
+                #   StateDirectory = "harmonia";
+                #   DynamicUser = mkForce false;
+                # };
+              };
+              harmonia-daemon = {
+                # environment.RUST_LOG = mkForce "trace";
                 preStart = ''
-                  ${config.nix.package}/bin/nix store ping
+                  ${config.nix.package}/bin/nix store info --store /var/lib/harmonia
                 '';
                 serviceConfig = {
+                  User = "harmonia";
+                  Group = "harmonia";
                   StateDirectory = "harmonia";
+                  DynamicUser = mkForce false;
                 };
               };
             };
@@ -235,11 +251,20 @@ in
               };
             };
 
-            harmonia = {
-              enable = true;
-              signKeyPaths = [ config.age.secrets."nix-cache.key".path ];
-              settings = {
-                priority = 30;
+            harmonia-dev = {
+              daemon = {
+                enable = true;
+                storeDir = "/nix/store";
+                dbPath = "/var/lib/harmonia/nix/var/nix/db/db.sqlite";
+              };
+              cache = {
+                enable = true;
+                signKeyPaths = [ config.age.secrets."nix-cache.key".path ];
+                settings = {
+                  priority = 30;
+                  daemon_store = "/nix/store";
+                  real_nix_store = "/var/lib/harmonia/nix/store";
+                };
               };
             };
 
diff --git a/nixos/modules/common.nix b/nixos/modules/common.nix
index 7a2ad81..0873a04 100644
--- a/nixos/modules/common.nix
+++ b/nixos/modules/common.nix
@@ -9,10 +9,11 @@ in
   };
 
   imports = [
-    inputs.impermanence.nixosModule
+    inputs.impermanence.nixosModules.default
     inputs.ragenix.nixosModules.age
     inputs.sharry.nixosModules.default
     inputs.copyparty.nixosModules.default
+    inputs.harmonia.nixosModules.harmonia
   ];
 
   config = mkMerge [