flake update

.envrc

@@ -0,0 +1,5 @@
+#!/usr/bin/env bash
+# Activate the devshell from the Nix flake
+# This loads all tools and environment variables defined in flake.nix
+
+use flake

.gitignore

@@ -1,2 +1,29 @@
+# Sisyphus work session data
+.sisyphus/
+
+# Editor files
+*~
+.*.swp
+.*.swo
+.*.swx
+
+# Build artifacts
+result
+result-*
+.direnv/
+
+# IDE
+.vscode/
+.idea/
+*.iml
+
+# OS
+.DS_Store
+Thumbs.db
+
+# Opencode rules
+.opencode-rules
+opencode.json
+
 .todos/
 .sidecar/

flake.lock

@@ -24,11 +24,27 @@
     "agents": {
       "flake": false,
       "locked": {
-        "lastModified": 1770751453,
+        "lastModified": 1771432333,
-        "narHash": "sha256-/cGH+1A1F/oJ2Rq7i7YCJnm7Hp5veQpHWP3lqvV2DC0=",
+        "narHash": "sha256-IkfbQQahxwMBRRUl+FKc03pxSZO1MX2kRxBuCqKuTD4=",
         "ref": "refs/heads/master",
-        "rev": "eab0a9465049948ea82ba0d1a1e2ae830c3388e8",
+        "rev": "1bc81fb38c20154f0dd77f7da9b9d95439d8d873",
-        "revCount": 45,
+        "revCount": 62,
+        "type": "git",
+        "url": "https://code.m3ta.dev/m3tam3re/AGENTS"
+      },
+      "original": {
+        "type": "git",
+        "url": "https://code.m3ta.dev/m3tam3re/AGENTS"
+      }
+    },
+    "agents_2": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1771353084,
+        "narHash": "sha256-QsrA7+md+bw1ACQeuvDn2mE5X11gM0hqVGse58spedA=",
+        "ref": "refs/heads/master",
+        "rev": "5b204c95e419eb75b04c5f85e1bd56ed56a5abe4",
+        "revCount": 60,
         "type": "git",
         "url": "https://code.m3ta.dev/m3tam3re/AGENTS"
       },
@@ -62,11 +78,11 @@
         "systems": "systems_3"
       },
       "locked": {
-        "lastModified": 1769353768,
+        "lastModified": 1771437256,
-        "narHash": "sha256-zI+7cbMI4wMIR57jMjDSEsVb3grapTnURDxxJPYFIW0=",
+        "narHash": "sha256-bLqwib+rtyBRRVBWhMuBXPCL/OThfokA+j6+uH7jDGU=",
         "owner": "numtide",
         "repo": "blueprint",
-        "rev": "c7da5c70ad1c9b60b6f5d4f674fbe205d48d8f6c",
+        "rev": "06ee7190dc2620ea98af9eb225aa9627b68b0e33",
         "type": "github"
       },
       "original": {
@@ -124,11 +140,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1769524058,
+        "lastModified": 1771469470,
-        "narHash": "sha256-zygdD6X1PcVNR2PsyK4ptzrVEiAdbMqLos7utrMDEWE=",
+        "narHash": "sha256-GnqdqhrguKNN3HtVfl6z+zbV9R9jhHFm3Z8nu7R6ml0=",
         "owner": "nix-community",
         "repo": "disko",
-        "rev": "71a3fc97d80881e91710fe721f1158d3b96ae14d",
+        "rev": "4707eec8d1d2db5182ea06ed48c820a86a42dc13",
         "type": "github"
       },
       "original": {
@@ -217,6 +233,24 @@
         "type": "github"
       }
     },
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems_4"
+      },
+      "locked": {
+        "lastModified": 1731533236,
+        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
     "home-manager": {
       "inputs": {
         "nixpkgs": [
@@ -245,11 +279,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1770654520,
+        "lastModified": 1771471179,
-        "narHash": "sha256-mg5WZMIPGsFu9MxSrUcuJUPMbfMsF77el5yb/7rc10k=",
+        "narHash": "sha256-XuP8HPzvt4+m9aKVeL9GdGNlTeyeDn3zEeUuorvrw88=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "6c4fdbe1ad198fac36c320fd45c5957324a80b8e",
+        "rev": "2dedeb55b2c140d9a123ae931588e8903fe202ef",
         "type": "github"
       },
       "original": {
@@ -283,14 +317,36 @@
     "m3ta-nixpkgs": {
       "inputs": {
         "nixpkgs": "nixpkgs_3",
-        "opencode": "opencode"
+        "nixpkgs-master": "nixpkgs-master",
+        "opencode": "opencode",
+        "openspec": "openspec"
       },
       "locked": {
-        "lastModified": 1770775409,
+        "lastModified": 1771433707,
-        "narHash": "sha256-ZijMd/HxLKQEC9CRfdr5enXrkZjR6fiCU93vfqiB9fM=",
+        "narHash": "sha256-O6S4YB16lN9ACb2Z6lEWxE22IyUhb+Z3mJgQJw3hpA4=",
         "ref": "refs/heads/master",
-        "rev": "19456800ed9d3ec26f07f807d96dfe09252123d4",
+        "rev": "58312b2ca2fdf5e0f753e496b4902a523cbb96aa",
-        "revCount": 93,
+        "revCount": 120,
+        "type": "git",
+        "url": "https://code.m3ta.dev/m3tam3re/nixpkgs"
+      },
+      "original": {
+        "type": "git",
+        "url": "https://code.m3ta.dev/m3tam3re/nixpkgs"
+      }
+    },
+    "m3ta-nixpkgs_2": {
+      "inputs": {
+        "nixpkgs": "nixpkgs_6",
+        "nixpkgs-master": "nixpkgs-master_2",
+        "opencode": "opencode_2"
+      },
+      "locked": {
+        "lastModified": 1771355771,
+        "narHash": "sha256-Uhq6aMCuzKqC2UIAbEkx+LQS77MGEVDEL7zpfoW6VB8=",
+        "ref": "refs/heads/master",
+        "rev": "dc206b13e256941298868d559fff9be31d7e0e34",
+        "revCount": 119,
         "type": "git",
         "url": "https://code.m3ta.dev/m3tam3re/nixpkgs"
       },
@@ -302,15 +358,15 @@
     "nix-ai-tools": {
       "inputs": {
         "blueprint": "blueprint",
-        "nixpkgs": "nixpkgs_5",
+        "nixpkgs": "nixpkgs_4",
         "treefmt-nix": "treefmt-nix"
       },
       "locked": {
-        "lastModified": 1770694022,
+        "lastModified": 1771471382,
-        "narHash": "sha256-+blZO0NoxRrM4PU7s4fv/iD5juNH2LQZ65OWLjcKHfU=",
+        "narHash": "sha256-YvONlmHPIDsUXyZbPvFFSQEYDOm30QsvMnZKlMKHROA=",
         "owner": "numtide",
         "repo": "nix-ai-tools",
-        "rev": "1210ebee485fdbd8000d790418d7855f7431493f",
+        "rev": "2abff10d3848886f248818c161ef3e1546055fcd",
         "type": "github"
       },
       "original": {
@@ -458,13 +514,45 @@
         "type": "github"
       }
     },
+    "nixpkgs-master": {
+      "locked": {
+        "lastModified": 1770917518,
+        "narHash": "sha256-XSwv/tVrNo/L8SPH8Lx9xZH1PrZd/3Z3J/0SH7Xertg=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "3f4a3c08f2f318ee29fc8a2689f390071a94aaf0",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "master",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs-master_2": {
+      "locked": {
+        "lastModified": 1770917518,
+        "narHash": "sha256-XSwv/tVrNo/L8SPH8Lx9xZH1PrZd/3Z3J/0SH7Xertg=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "3f4a3c08f2f318ee29fc8a2689f390071a94aaf0",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "master",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
     "nixpkgs-unstable": {
       "locked": {
-        "lastModified": 1770562336,
+        "lastModified": 1771369470,
-        "narHash": "sha256-ub1gpAONMFsT/GU2hV6ZWJjur8rJ6kKxdm9IlCT0j84=",
+        "narHash": "sha256-0NBlEBKkN3lufyvFegY4TYv5mCNHbi5OmBDrzihbBMQ=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "d6c71932130818840fc8fe9509cf50be8c64634f",
+        "rev": "0182a361324364ae3f436a63005877674cf45efb",
         "type": "github"
       },
       "original": {
@@ -508,11 +596,11 @@
     },
     "nixpkgs_4": {
       "locked": {
-        "lastModified": 1770073757,
+        "lastModified": 1771207753,
-        "narHash": "sha256-Vy+G+F+3E/Tl+GMNgiHl9Pah2DgShmIUBJXmbiQPHbI=",
+        "narHash": "sha256-b9uG8yN50DRQ6A7JdZBfzq718ryYrlmGgqkRm9OOwCE=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "47472570b1e607482890801aeaf29bfb749884f6",
+        "rev": "d1c15b7d5806069da59e819999d70e1cec0760bf",
         "type": "github"
       },
       "original": {
@@ -524,32 +612,48 @@
     },
     "nixpkgs_5": {
       "locked": {
-        "lastModified": 1770537093,
+        "lastModified": 1771208521,
-        "narHash": "sha256-pF1quXG5wsgtyuPOHcLfYg/ft/QMr8NnX0i6tW2187s=",
+        "narHash": "sha256-X01Q3DgSpjeBpapoGA4rzKOn25qdKxbPnxHeMLNoHTU=",
-        "owner": "NixOS",
+        "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "fef9403a3e4d31b0a23f0bacebbec52c248fbb51",
+        "rev": "fa56d7d6de78f5a7f997b0ea2bc6efd5868ad9e8",
         "type": "github"
       },
       "original": {
-        "owner": "NixOS",
+        "owner": "nixos",
-        "ref": "nixpkgs-unstable",
+        "ref": "nixos-25.11",
         "repo": "nixpkgs",
         "type": "github"
       }
     },
     "nixpkgs_6": {
       "locked": {
-        "lastModified": 1770464364,
+        "lastModified": 1770562336,
-        "narHash": "sha256-z5NJPSBwsLf/OfD8WTmh79tlSU8XgIbwmk6qB1/TFzY=",
+        "narHash": "sha256-ub1gpAONMFsT/GU2hV6ZWJjur8rJ6kKxdm9IlCT0j84=",
-        "owner": "nixos",
+        "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "23d72dabcb3b12469f57b37170fcbc1789bd7457",
+        "rev": "d6c71932130818840fc8fe9509cf50be8c64634f",
         "type": "github"
       },
       "original": {
-        "owner": "nixos",
+        "owner": "NixOS",
-        "ref": "nixos-25.11",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs_7": {
+      "locked": {
+        "lastModified": 1770115704,
+        "narHash": "sha256-KHFT9UWOF2yRPlAnSXQJh6uVcgNcWlFqqiAZ7OVlHNc=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "e6eae2ee2110f3d31110d5c222cd395303343b08",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-unstable",
         "repo": "nixpkgs",
         "type": "github"
       }
@@ -562,11 +666,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1770700998,
+        "lastModified": 1771477823,
-        "narHash": "sha256-TgB/5dzl6x/XO1nSBeGi9sJAkr4eGA3aplwU+CAbxVg=",
+        "narHash": "sha256-DzsWqyb5wqjOyP0HxNlcWbhyAfa3Vmcvf2r+0Pb2WtE=",
         "owner": "nix-community",
         "repo": "NUR",
-        "rev": "819102e2f2d3bf58c2066ed45a460feb04bbd52a",
+        "rev": "076448fc61157c82cca67e481e29d05f0a4d7627",
         "type": "github"
       },
       "original": {
@@ -577,23 +681,70 @@
     },
     "opencode": {
       "inputs": {
-        "nixpkgs": "nixpkgs_4"
+        "nixpkgs": [
+          "m3ta-nixpkgs",
+          "nixpkgs-master"
+        ]
       },
       "locked": {
-        "lastModified": 1770761545,
+        "lastModified": 1771271829,
-        "narHash": "sha256-IHN7Rh/Wb4TKdT1rkJYgkI0CLBXCcrM0OpCkIlycW+Y=",
+        "narHash": "sha256-43vPMyO7DsAgKrh0Wmt7jLDYCWUsaj30nBITreyYgX8=",
         "owner": "anomalyco",
         "repo": "opencode",
-        "rev": "1bbbd51d48f38014674eebe1588f556da95b7b1f",
+        "rev": "d8c25bfeb44771cc3a3ba17bf8de6ad2add9de2c",
         "type": "github"
       },
       "original": {
         "owner": "anomalyco",
-        "ref": "v1.1.56",
+        "ref": "v1.2.6",
         "repo": "opencode",
         "type": "github"
       }
     },
+    "opencode_2": {
+      "inputs": {
+        "nixpkgs": [
+          "zugferd-service",
+          "m3ta-nixpkgs",
+          "nixpkgs-master"
+        ]
+      },
+      "locked": {
+        "lastModified": 1771271829,
+        "narHash": "sha256-43vPMyO7DsAgKrh0Wmt7jLDYCWUsaj30nBITreyYgX8=",
+        "owner": "anomalyco",
+        "repo": "opencode",
+        "rev": "d8c25bfeb44771cc3a3ba17bf8de6ad2add9de2c",
+        "type": "github"
+      },
+      "original": {
+        "owner": "anomalyco",
+        "ref": "v1.2.6",
+        "repo": "opencode",
+        "type": "github"
+      }
+    },
+    "openspec": {
+      "inputs": {
+        "nixpkgs": [
+          "m3ta-nixpkgs",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1771409495,
+        "narHash": "sha256-LplnuO/OHSFL8S8iwQ16CZTjlPxRV9XohkKxL3uA5Sc=",
+        "owner": "Fission-AI",
+        "repo": "OpenSpec",
+        "rev": "5fd8e9d66c3b6b116e7af814a6013c2d9c4958dd",
+        "type": "github"
+      },
+      "original": {
+        "owner": "Fission-AI",
+        "repo": "OpenSpec",
+        "type": "github"
+      }
+    },
     "root": {
       "inputs": {
         "agenix": "agenix",
@@ -606,9 +757,10 @@
         "nix-ai-tools": "nix-ai-tools",
         "nix-colors": "nix-colors",
         "nixos-anywhere": "nixos-anywhere",
-        "nixpkgs": "nixpkgs_6",
+        "nixpkgs": "nixpkgs_5",
         "nixpkgs-unstable": "nixpkgs-unstable",
-        "nur": "nur"
+        "nur": "nur",
+        "zugferd-service": "zugferd-service"
       }
     },
     "systems": {
@@ -656,6 +808,21 @@
         "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"
+      }
+    },
     "treefmt-nix": {
       "inputs": {
         "nixpkgs": [
@@ -715,6 +882,27 @@
         "repo": "flake-utils",
         "type": "github"
       }
+    },
+    "zugferd-service": {
+      "inputs": {
+        "agents": "agents_2",
+        "flake-utils": "flake-utils",
+        "m3ta-nixpkgs": "m3ta-nixpkgs_2",
+        "nixpkgs": "nixpkgs_7"
+      },
+      "locked": {
+        "lastModified": 1771402778,
+        "narHash": "sha256-CA1V+H0iOxy5POr2/ZnRrAMvQWav1TI0m9C1T2b7EvQ=",
+        "ref": "refs/heads/master",
+        "rev": "e47e36d55c6678932a63e295127b844f817d3948",
+        "revCount": 12,
+        "type": "git",
+        "url": "https://git.az-gruppe.com/AZ-Intec-GmbH/zugferd-service"
+      },
+      "original": {
+        "type": "git",
+        "url": "https://git.az-gruppe.com/AZ-Intec-GmbH/zugferd-service"
+      }
     }
   },
   "root": "root",

flake.nix

@@ -52,11 +52,15 @@
       url = "git+https://code.m3ta.dev/m3tam3re/AGENTS";
       flake = false;
     };
+    zugferd-service = {
+      url = "git+https://git.az-gruppe.com/AZ-Intec-GmbH/zugferd-service";
+    };
   };
 
   outputs = {
     self,
     agenix,
+    agents,
     deploy-rs,
     home-manager,
     nixpkgs,
@@ -84,23 +88,47 @@
         inherit system;
         config.allowUnfree = true; # Allow unfree packages in devShell
       };
+      m3taLib = m3ta-nixpkgs.lib.${system};
+      rules = m3taLib.opencode-rules.mkOpencodeRules {
+        inherit agents;
+        languages = ["nix"];
+      };
     in {
       default = pkgs.mkShell {
+        inherit (rules) instructions;
         buildInputs = with pkgs; [
-          opentofu
+          alejandra
-          openssh
+          nixd
+          opencode
           agenix.packages.${system}.default
         ];
 
         shellHook = ''
-          echo "🚀 NixOS Infrastructure Development Shell"
+          ${rules.shellHook}
-          echo "Available tools:"
+          echo "🚀 NixOS Infrastructure Development Shell with Opencode Rules"
-          echo "  - opentofu: Infrastructure as Code"
-          echo "  - agenix: Secret management"
           echo ""
-          echo "Quick start:"
+          echo "Active rules:"
-          echo "  cd terraform && tofu init init"
+          echo "  - Nix language conventions"
+          echo "  - Coding-style best practices"
+          echo "  - Naming conventions"
+          echo "  - Documentation standards"
+          echo "  - Testing guidelines"
+          echo "  - Git workflow patterns"
+          echo "  - Project structure guidelines"
           echo ""
+          echo "Generated files:"
+          echo "  - .opencode-rules/ (symlink to AGENTS repo)"
+          echo "  - opencode.json (configuration file)"
+          echo ""
+          echo "Useful commands:"
+          echo "  - cat opencode.json        View rules configuration"
+          echo "  - ls .opencode-rules/      Browse available rules"
+          echo "  - nix develop              Re-enter this shell"
+          echo ""
+          echo "Remember to add to .gitignore:"
+          echo "  .opencode-rules"
+          echo "  opencode.json"
+          echo "======================================"
         '';
       };
     });
@@ -112,6 +140,7 @@
           ./hosts/AZ-CLD-1
           agenix.nixosModules.default
           inputs.disko.nixosModules.disko
+          inputs.zugferd-service.nixosModules.default
         ];
       };
       AZ-PRM-1 = nixpkgs.lib.nixosSystem {

home/features/coding/default.nix

@@ -25,7 +25,8 @@
     nix-update
     sidecar
     td
-    # opencode-desktop
+    opencode-desktop
+    openspec
     tailwindcss
     tailwindcss-language-server
   ];

home/features/coding/opencode.nix

@@ -80,13 +80,13 @@
     google_auth = false;
     agents = {
       sisyphus = {
-        model = "zai-coding-plan/glm-4.7";
+        model = "zai-coding-plan/glm-5";
       };
       oracle = {
-        model = "zai-coding-plan/glm-4.7";
+        model = "zai-coding-plan/glm-5";
       };
       librarian = {
-        model = "zai-coding-plan/glm-4.7";
+        model = "zai-coding-plan/glm-5";
       };
       explore = {
         model = "zai-coding-plan/glm-4.5-air";
@@ -95,39 +95,39 @@
         model = "zai-coding-plan/glm-4.6v";
       };
       prometheus = {
-        model = "zai-coding-plan/glm-4.7";
+        model = "zai-coding-plan/glm-5";
       };
       metis = {
-        model = "zai-coding-plan/glm-4.7";
+        model = "zai-coding-plan/glm-5";
       };
       momus = {
-        model = "zai-coding-plan/glm-4.7";
+        model = "zai-coding-plan/glm-5";
       };
       atlas = {
-        model = "zai-coding-plan/glm-4.7";
+        model = "zai-coding-plan/glm-5";
       };
     };
     categories = {
       visual-engineering = {
-        model = "zai-coding-plan/glm-4.7";
+        model = "zai-coding-plan/glm-5";
       };
       ultrabrain = {
-        model = "zai-coding-plan/glm-4.7";
+        model = "zai-coding-plan/glm-5";
       };
       artistry = {
-        model = "zai-coding-plan/glm-4.7";
+        model = "zai-coding-plan/glm-5";
       };
       quick = {
-        model = "zai-coding-plan/glm-4.7";
+        model = "zai-coding-plan/glm-5";
       };
       unspecified-low = {
-        model = "zai-coding-plan/glm-4.7";
+        model = "zai-coding-plan/glm-5";
       };
       unspecified-high = {
-        model = "zai-coding-plan/glm-4.7";
+        model = "zai-coding-plan/glm-5";
       };
       writing = {
-        model = "zai-coding-plan/glm-4.7";
+        model = "zai-coding-plan/glm-5";
       };
     };
     disabled_mcps = ["context7" "websearch"];

home/users/sascha.koenig/AZLT124-L.nix

@@ -89,7 +89,7 @@ in {
           windowrule = [
             "match:class com.obsproject.Studio, workspace 1"
             "match:class dev.zed.Zed, workspace 3"
-            "match:class vivaldi-stable, workspace 5, opacity 1.0"
+            "match:class vivaldi-stable, workspace 4, opacity 1.0"
             "match:initial_title 3.basecamp.com_/5996442/, workspace 5, opacity 1.0"
             "match:initial_title 3.basecamp.com_/5996442/, tile on"
             "match:initial_title teams.microsoft.com_/, workspace 6, opacity 1.0"

hosts/AZ-CLD-1/services/default.nix

@@ -10,6 +10,7 @@
     ./postgres.nix
     ./traefik.nix
     ./vaultwarden.nix
+    ./zugferd.nix
     # ./zammad.nix
   ];
 }

hosts/AZ-CLD-1/services/zugferd.nix

@@ -0,0 +1,10 @@
+{lib, ...}: let
+  serviceName = "zugferd-service";
+  portUtils = import ../../../lib/port-utils.nix {inherit lib;};
+in {
+  services.${serviceName} = {
+    enable = true;
+    port = portUtils.getPort serviceName "AZ-CLD-1";
+    host = "127.0.0.1";
+  };
+}

lib/ports.nix

@@ -28,6 +28,7 @@
     # Workflow/automation (5000-5999 range)
     n8n = 5678;
     kestra = 5080;
+    zugferd-service = 5060;
 
     # Management tools (9000-9999 range)
     portainer = 9000;

overlays/default.nix

@@ -3,7 +3,7 @@
   additions = final: prev:
     (import ../pkgs {pkgs = final;})
     // {
-      #crush = inputs.nix-ai-tools.packages.${prev.system}.crush;
+      zugferd-service = inputs.zugferd-service.packages.${prev.system}.default;
     };
 
   # This one contains whatever you want to overlay