diff --git a/README.md b/README.md
index 3158d6f..6d190a7 100644
--- a/README.md
+++ b/README.md
@@ -17,6 +17,33 @@
 > it's a more than just a dotfiles in cause of packages, modules, templates and 
 > etc. Discover the current repository on your own risk.
 
+# Hints 
+
+* Update and push inputs:
+```sh 
+nix flake update 
+nix flake archive --json \
+    | jq -r '.path,(.inputs|to_entries[].value.path)' \
+    | cachix push bonfire
+```
+
+* Build and push package:
+```sh 
+nix build --json .#package \
+    | jq -r '.[].outputs | to_entries[].value' \
+    | cachix push bonfire 
+```
+
+* Rebuild system with git submodules:
+```sh 
+nixos-rebuild switch --flake ".?submodules=1#astora"
+```
+
+* Rebuild remote system from local system with git submodules:
+```sh 
+nixos-rebuild switch --flake ".?submodules=1#catarina" --build-host l-nafaryus@astora --target-host l.nafaryus@catarina --use-remote-sudo
+```
+
 # License
 
 
diff --git a/devShells/bonfire.nix b/devShells/bonfire.nix
index cba3b1b..9f43d36 100644
--- a/devShells/bonfire.nix
+++ b/devShells/bonfire.nix
@@ -1,6 +1,8 @@
 { crane-lib, pkgs, ... }:
 crane-lib.devShell {
     packages = with pkgs; [
+        sops
+        mkpasswd
         nil
         jq
         cachix
diff --git a/flake.lock b/flake.lock
index 2e0b60e..77a3df2 100644
--- a/flake.lock
+++ b/flake.lock
@@ -16,18 +16,65 @@
         "type": "gitlab"
       }
     },
+    "blobs_2": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1604995301,
+        "narHash": "sha256-wcLzgLec6SGJA8fx1OEN1yV/Py5b+U5iyYpksUY/yLw=",
+        "owner": "simple-nixos-mailserver",
+        "repo": "blobs",
+        "rev": "2cccdf1ca48316f2cfd1c9a0017e8de5a7156265",
+        "type": "gitlab"
+      },
+      "original": {
+        "owner": "simple-nixos-mailserver",
+        "repo": "blobs",
+        "type": "gitlab"
+      }
+    },
+    "bonfire": {
+      "inputs": {
+        "crane": "crane_2",
+        "devenv": "devenv",
+        "fenix": "fenix_2",
+        "home-manager": "home-manager_2",
+        "nixgl": "nixgl_2",
+        "nixos-mailserver": "nixos-mailserver_2",
+        "nixpkgs": "nixpkgs_3",
+        "sops-nix": "sops-nix"
+      },
+      "locked": {
+        "lastModified": 1713950784,
+        "narHash": "sha256-E8KH9rUYRNEajvuUhQxaqVZEj4INxgux/HbQ7NzZZ68=",
+        "owner": "L-Nafaryus",
+        "repo": "bonfire",
+        "rev": "5217f6d2229e246f0df4d47c1b4046559160c14f",
+        "type": "github"
+      },
+      "original": {
+        "owner": "L-Nafaryus",
+        "repo": "bonfire",
+        "type": "github"
+      }
+    },
     "cachix": {
       "inputs": {
         "devenv": "devenv_2",
         "flake-compat": [
+          "oscuro",
+          "bonfire",
           "devenv",
           "flake-compat"
         ],
         "nixpkgs": [
+          "oscuro",
+          "bonfire",
           "devenv",
           "nixpkgs"
         ],
         "pre-commit-hooks": [
+          "oscuro",
+          "bonfire",
           "devenv",
           "pre-commit-hooks"
         ]
@@ -66,12 +113,36 @@
         "type": "github"
       }
     },
+    "crane_2": {
+      "inputs": {
+        "nixpkgs": [
+          "oscuro",
+          "bonfire",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1713738183,
+        "narHash": "sha256-qd/MuLm7OfKQKyd4FAMqV4H6zYyOfef5lLzRrmXwKJM=",
+        "owner": "ipetkov",
+        "repo": "crane",
+        "rev": "f6c6a2fb1b8bd9b65d65ca9342dd0eb180a63f11",
+        "type": "github"
+      },
+      "original": {
+        "owner": "ipetkov",
+        "repo": "crane",
+        "type": "github"
+      }
+    },
     "devenv": {
       "inputs": {
         "cachix": "cachix",
-        "flake-compat": "flake-compat_2",
+        "flake-compat": "flake-compat_3",
         "nix": "nix_2",
         "nixpkgs": [
+          "oscuro",
+          "bonfire",
           "nixpkgs"
         ],
         "pre-commit-hooks": "pre-commit-hooks"
@@ -93,14 +164,18 @@
     "devenv_2": {
       "inputs": {
         "flake-compat": [
+          "oscuro",
+          "bonfire",
           "devenv",
           "cachix",
           "flake-compat"
         ],
         "nix": "nix",
-        "nixpkgs": "nixpkgs",
+        "nixpkgs": "nixpkgs_2",
         "poetry2nix": "poetry2nix",
         "pre-commit-hooks": [
+          "oscuro",
+          "bonfire",
           "devenv",
           "cachix",
           "pre-commit-hooks"
@@ -142,14 +217,40 @@
         "type": "github"
       }
     },
+    "fenix_2": {
+      "inputs": {
+        "nixpkgs": [
+          "oscuro",
+          "bonfire",
+          "nixpkgs"
+        ],
+        "rust-analyzer-src": [
+          "oscuro",
+          "bonfire"
+        ]
+      },
+      "locked": {
+        "lastModified": 1713853552,
+        "narHash": "sha256-OOXi+9cSbst7Crah6UVxHe33O6HK91WgD2yU/p5/dqs=",
+        "owner": "nix-community",
+        "repo": "fenix",
+        "rev": "d596927635ddd8db224bbff6e4ccb08e42649eb5",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "fenix",
+        "type": "github"
+      }
+    },
     "flake-compat": {
       "flake": false,
       "locked": {
-        "lastModified": 1673956053,
-        "narHash": "sha256-4gtG9iQuiKITOjNQQeQIpoIB6b16fm+504Ch3sNKLd8=",
+        "lastModified": 1696426674,
+        "narHash": "sha256-kvjfFW7WAETZlt09AgDn1MrtKzP7t90Vf7vypd3OL1U=",
         "owner": "edolstra",
         "repo": "flake-compat",
-        "rev": "35bb57c0c8d8b62bbfd284272c928ceb64ddbde9",
+        "rev": "0f9255e01c2351cc7d116c072cb317785dd33b33",
         "type": "github"
       },
       "original": {
@@ -161,11 +262,11 @@
     "flake-compat_2": {
       "flake": false,
       "locked": {
-        "lastModified": 1696426674,
-        "narHash": "sha256-kvjfFW7WAETZlt09AgDn1MrtKzP7t90Vf7vypd3OL1U=",
+        "lastModified": 1673956053,
+        "narHash": "sha256-4gtG9iQuiKITOjNQQeQIpoIB6b16fm+504Ch3sNKLd8=",
         "owner": "edolstra",
         "repo": "flake-compat",
-        "rev": "0f9255e01c2351cc7d116c072cb317785dd33b33",
+        "rev": "35bb57c0c8d8b62bbfd284272c928ceb64ddbde9",
         "type": "github"
       },
       "original": {
@@ -190,9 +291,40 @@
         "type": "github"
       }
     },
+    "flake-compat_4": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1696426674,
+        "narHash": "sha256-kvjfFW7WAETZlt09AgDn1MrtKzP7t90Vf7vypd3OL1U=",
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "rev": "0f9255e01c2351cc7d116c072cb317785dd33b33",
+        "type": "github"
+      },
+      "original": {
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "type": "github"
+      }
+    },
     "flake-utils": {
+      "locked": {
+        "lastModified": 1659877975,
+        "narHash": "sha256-zllb8aq3YO3h8B/U0/J1WBgAL8EX5yWf5pMj3G0NAmc=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "c0e246b9b83f637f4681389ecabcb2681b4f3af0",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "flake-utils_2": {
       "inputs": {
-        "systems": "systems"
+        "systems": "systems_2"
       },
       "locked": {
         "lastModified": 1689068808,
@@ -208,9 +340,9 @@
         "type": "github"
       }
     },
-    "flake-utils_2": {
+    "flake-utils_3": {
       "inputs": {
-        "systems": "systems_2"
+        "systems": "systems_3"
       },
       "locked": {
         "lastModified": 1710146030,
@@ -226,7 +358,7 @@
         "type": "github"
       }
     },
-    "flake-utils_3": {
+    "flake-utils_4": {
       "locked": {
         "lastModified": 1659877975,
         "narHash": "sha256-zllb8aq3YO3h8B/U0/J1WBgAL8EX5yWf5pMj3G0NAmc=",
@@ -244,6 +376,8 @@
     "gitignore": {
       "inputs": {
         "nixpkgs": [
+          "oscuro",
+          "bonfire",
           "devenv",
           "pre-commit-hooks",
           "nixpkgs"
@@ -283,10 +417,34 @@
         "type": "github"
       }
     },
+    "home-manager_2": {
+      "inputs": {
+        "nixpkgs": [
+          "oscuro",
+          "bonfire",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1713818326,
+        "narHash": "sha256-aw3xbVPJauLk/bbrlakIYxKpeuMWzA2feGrkIpIuXd8=",
+        "owner": "nix-community",
+        "repo": "home-manager",
+        "rev": "67de98ae6eed5ad6f91b1142356d71a87ba97f21",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "home-manager",
+        "type": "github"
+      }
+    },
     "nix": {
       "inputs": {
-        "flake-compat": "flake-compat",
+        "flake-compat": "flake-compat_2",
         "nixpkgs": [
+          "oscuro",
+          "bonfire",
           "devenv",
           "cachix",
           "devenv",
@@ -312,6 +470,8 @@
     "nix-github-actions": {
       "inputs": {
         "nixpkgs": [
+          "oscuro",
+          "bonfire",
           "devenv",
           "cachix",
           "devenv",
@@ -336,10 +496,14 @@
     "nix_2": {
       "inputs": {
         "flake-compat": [
+          "oscuro",
+          "bonfire",
           "devenv",
           "flake-compat"
         ],
         "nixpkgs": [
+          "oscuro",
+          "bonfire",
           "devenv",
           "nixpkgs"
         ],
@@ -362,7 +526,7 @@
     },
     "nixgl": {
       "inputs": {
-        "flake-utils": "flake-utils_3",
+        "flake-utils": "flake-utils",
         "nixpkgs": [
           "nixpkgs"
         ]
@@ -381,10 +545,33 @@
         "type": "github"
       }
     },
+    "nixgl_2": {
+      "inputs": {
+        "flake-utils": "flake-utils_4",
+        "nixpkgs": [
+          "oscuro",
+          "bonfire",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1713543440,
+        "narHash": "sha256-lnzZQYG0+EXl/6NkGpyIz+FEOc/DSEG57AP1VsdeNrM=",
+        "owner": "guibou",
+        "repo": "nixGL",
+        "rev": "310f8e49a149e4c9ea52f1adf70cdc768ec53f8a",
+        "type": "github"
+      },
+      "original": {
+        "owner": "guibou",
+        "repo": "nixGL",
+        "type": "github"
+      }
+    },
     "nixos-mailserver": {
       "inputs": {
         "blobs": "blobs",
-        "flake-compat": "flake-compat_3",
+        "flake-compat": "flake-compat",
         "nixpkgs": [
           "nixpkgs"
         ],
@@ -404,18 +591,43 @@
         "type": "gitlab"
       }
     },
+    "nixos-mailserver_2": {
+      "inputs": {
+        "blobs": "blobs_2",
+        "flake-compat": "flake-compat_4",
+        "nixpkgs": [
+          "oscuro",
+          "bonfire",
+          "nixpkgs"
+        ],
+        "utils": "utils_2"
+      },
+      "locked": {
+        "lastModified": 1713012165,
+        "narHash": "sha256-z/soXKDnz+w4Nw0LkRaM73YqolhSmIYy6cpg1F2ps8I=",
+        "owner": "simple-nixos-mailserver",
+        "repo": "nixos-mailserver",
+        "rev": "9f6635a0351c190179dc6904545f950108a23dd8",
+        "type": "gitlab"
+      },
+      "original": {
+        "owner": "simple-nixos-mailserver",
+        "repo": "nixos-mailserver",
+        "type": "gitlab"
+      }
+    },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1692808169,
-        "narHash": "sha256-x9Opq06rIiwdwGeK2Ykj69dNc2IvUH1fY55Wm7atwrE=",
-        "owner": "NixOS",
+        "lastModified": 1713714899,
+        "narHash": "sha256-+z/XjO3QJs5rLE5UOf015gdVauVRQd2vZtsFkaXBq2Y=",
+        "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "9201b5ff357e781bf014d0330d18555695df7ba8",
+        "rev": "6143fc5eeb9c4f00163267708e26191d1e918932",
         "type": "github"
       },
       "original": {
-        "owner": "NixOS",
-        "ref": "nixpkgs-unstable",
+        "owner": "nixos",
+        "ref": "nixos-unstable",
         "repo": "nixpkgs",
         "type": "github"
       }
@@ -484,7 +696,39 @@
         "type": "github"
       }
     },
+    "nixpkgs-stable_3": {
+      "locked": {
+        "lastModified": 1713638189,
+        "narHash": "sha256-q7APLfB6FmmSMI1Su5ihW9IwntBsk2hWNXh8XtSdSIk=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "74574c38577914733b4f7a775dd77d24245081dd",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "release-23.11",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
     "nixpkgs_2": {
+      "locked": {
+        "lastModified": 1692808169,
+        "narHash": "sha256-x9Opq06rIiwdwGeK2Ykj69dNc2IvUH1fY55Wm7atwrE=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "9201b5ff357e781bf014d0330d18555695df7ba8",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs_3": {
       "locked": {
         "lastModified": 1713714899,
         "narHash": "sha256-+z/XjO3QJs5rLE5UOf015gdVauVRQd2vZtsFkaXBq2Y=",
@@ -500,11 +744,31 @@
         "type": "github"
       }
     },
+    "oscuro": {
+      "inputs": {
+        "bonfire": "bonfire"
+      },
+      "locked": {
+        "lastModified": 1714131862,
+        "narHash": "sha256-t936zWQu+wHz4i1SPveDrCIpzvtjzhqlbCh7quzZldU=",
+        "owner": "L-Nafaryus",
+        "repo": "oscuro",
+        "rev": "d3944c0a08747f11aa4b9227dcb256c103a5a559",
+        "type": "github"
+      },
+      "original": {
+        "owner": "L-Nafaryus",
+        "repo": "oscuro",
+        "type": "github"
+      }
+    },
     "poetry2nix": {
       "inputs": {
-        "flake-utils": "flake-utils",
+        "flake-utils": "flake-utils_2",
         "nix-github-actions": "nix-github-actions",
         "nixpkgs": [
+          "oscuro",
+          "bonfire",
           "devenv",
           "cachix",
           "devenv",
@@ -528,12 +792,16 @@
     "pre-commit-hooks": {
       "inputs": {
         "flake-compat": [
+          "oscuro",
+          "bonfire",
           "devenv",
           "flake-compat"
         ],
-        "flake-utils": "flake-utils_2",
+        "flake-utils": "flake-utils_3",
         "gitignore": "gitignore",
         "nixpkgs": [
+          "oscuro",
+          "bonfire",
           "devenv",
           "nixpkgs"
         ],
@@ -556,18 +824,20 @@
     "root": {
       "inputs": {
         "crane": "crane",
-        "devenv": "devenv",
         "fenix": "fenix",
         "home-manager": "home-manager",
         "nixgl": "nixgl",
         "nixos-mailserver": "nixos-mailserver",
-        "nixpkgs": "nixpkgs_2",
-        "sops-nix": "sops-nix"
+        "nixpkgs": "nixpkgs",
+        "oscuro": "oscuro",
+        "sops-nix": "sops-nix_2"
       }
     },
     "sops-nix": {
       "inputs": {
         "nixpkgs": [
+          "oscuro",
+          "bonfire",
           "nixpkgs"
         ],
         "nixpkgs-stable": "nixpkgs-stable_2"
@@ -586,6 +856,27 @@
         "type": "github"
       }
     },
+    "sops-nix_2": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ],
+        "nixpkgs-stable": "nixpkgs-stable_3"
+      },
+      "locked": {
+        "lastModified": 1713775152,
+        "narHash": "sha256-xyP8h9jLQ0AmyPy40sIwL7/D03oVpXG9YHoYJ4ecYWA=",
+        "owner": "Mic92",
+        "repo": "sops-nix",
+        "rev": "4371a1301c4d36cc791069d90ae522613a3a335e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "Mic92",
+        "repo": "sops-nix",
+        "type": "github"
+      }
+    },
     "systems": {
       "locked": {
         "lastModified": 1681028828,
@@ -631,9 +922,42 @@
         "type": "github"
       }
     },
+    "systems_4": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    },
     "utils": {
       "inputs": {
-        "systems": "systems_3"
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1709126324,
+        "narHash": "sha256-q6EQdSeUZOG26WelxqkmR7kArjgWCdw5sfJVHPH/7j8=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "d465f4819400de7c8d874d50b982301f28a84605",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "utils_2": {
+      "inputs": {
+        "systems": "systems_4"
       },
       "locked": {
         "lastModified": 1709126324,
diff --git a/flake.nix b/flake.nix
index d6e4fc0..e28d2ec 100644
--- a/flake.nix
+++ b/flake.nix
@@ -2,8 +2,8 @@
     description = "Derivation lit";
 
     nixConfig = {
-        extra-substituters = ["https://bonfire.cachix.org"];
-        extra-trusted-public-keys = ["bonfire.cachix.org-1:mzAGBy/Crdf8NhKail5ciK7ZrGRbPJJobW6TwFb7WYM="];
+        extra-substituters = [ "https://bonfire.cachix.org" ];
+        extra-trusted-public-keys = [ "bonfire.cachix.org-1:mzAGBy/Crdf8NhKail5ciK7ZrGRbPJJobW6TwFb7WYM=" ];
     };
 
     inputs = {
@@ -12,10 +12,6 @@
             url = "github:nix-community/home-manager"; 
             inputs.nixpkgs.follows = "nixpkgs"; 
         };
-        devenv = { 
-            url = "github:cachix/devenv"; 
-            inputs.nixpkgs.follows = "nixpkgs"; 
-        };
         nixgl = { 
             url = "github:guibou/nixGL"; 
             inputs.nixpkgs.follows = "nixpkgs"; 
@@ -37,9 +33,13 @@
             inputs.nixpkgs.follows = "nixpkgs"; 
             inputs.rust-analyzer-src.follows = ""; 
         };
+        oscuro = {
+            url = "github:L-Nafaryus/oscuro";
+            inputs.nixpkgs.follows = "nixpkgs";
+        };
     };
 
-    outputs = inputs @ { self, nixpkgs, home-manager, devenv, nixgl, nixos-mailserver, sops-nix, crane, fenix, ... }: {
+    outputs = inputs @ { self, nixpkgs, home-manager, nixgl, nixos-mailserver, sops-nix, crane, fenix, oscuro, ... }: {
 
         lib = import ./lib {};
         
@@ -60,6 +60,7 @@
                 modules = [
                     nixos-mailserver.nixosModules.mailserver
                     sops-nix.nixosModules.sops
+                    oscuro.nixosModules.oscuro
                     ./nixosConfigurations/catarina
                     ./nixosModules/bonfire.nix
                     self.nixosModules.spoofdpi