diff --git a/config/basic/generate-installer-package.nix b/config/basic/generate-installer-package.nix
new file mode 100644
index 0000000..57c4558
--- /dev/null
+++ b/config/basic/generate-installer-package.nix
@@ -0,0 +1,45 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+let
+
+  disko-script = pkgs.writeShellScriptBin "disko-script" "${config.system.build.diskoScript}";
+  disko-mount = pkgs.writeShellScriptBin "disko-mount" "${config.system.build.mountScript}";
+  disko-format = pkgs.writeShellScriptBin "disko-format" "${config.system.build.formatScript}";
+
+  install-system = pkgs.writeShellScriptBin "install-system" ''
+    set -euo pipefail
+
+    echo "Formatting disks..."
+    ${disko-script}/bin/disko-script
+
+    echo "Installing system..."
+    nixos-install --no-root-password --system ${config.system.build.toplevel}
+
+    echo "Done!"
+  '';
+
+  installer-package = pkgs.symlinkJoin {
+    name = "installer-package-${config.node.name}";
+    paths = [
+      disko-script
+      disko-mount
+      disko-format
+      install-system
+    ];
+  };
+in
+{
+  options.system.build.installFromLive = lib.mkOption {
+    type = lib.types.package;
+    description = ''
+      A single script that can be used from a live system, which will
+      format disks and copy the derivation.
+    '';
+    default = installer-package;
+    readOnly = true;
+  };
+}
diff --git a/flake.lock b/flake.lock
index 4defe0c..9f6aa21 100644
--- a/flake.lock
+++ b/flake.lock
@@ -531,6 +531,24 @@
       }
     },
     "flake-parts": {
+      "inputs": {
+        "nixpkgs-lib": "nixpkgs-lib"
+      },
+      "locked": {
+        "lastModified": 1722555600,
+        "narHash": "sha256-XOQkdLafnb/p9ij77byFQjDf5m5QYl9b2REiVClC+x4=",
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "rev": "8471fe90ad337a8074e957b69ca4d0089218391d",
+        "type": "github"
+      },
+      "original": {
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "type": "github"
+      }
+    },
+    "flake-parts_2": {
       "inputs": {
         "nixpkgs-lib": [
           "lanzaboote",
@@ -551,7 +569,7 @@
         "type": "github"
       }
     },
-    "flake-parts_2": {
+    "flake-parts_3": {
       "inputs": {
         "nixpkgs-lib": [
           "nixpkgs-wayland",
@@ -573,7 +591,7 @@
         "type": "github"
       }
     },
-    "flake-parts_3": {
+    "flake-parts_4": {
       "inputs": {
         "nixpkgs-lib": [
           "nixvim",
@@ -997,7 +1015,7 @@
       "inputs": {
         "crane": "crane",
         "flake-compat": "flake-compat_2",
-        "flake-parts": "flake-parts",
+        "flake-parts": "flake-parts_2",
         "flake-utils": "flake-utils_2",
         "nixpkgs": [
           "nixpkgs"
@@ -1023,7 +1041,7 @@
     "lib-aggregate": {
       "inputs": {
         "flake-utils": "flake-utils_6",
-        "nixpkgs-lib": "nixpkgs-lib"
+        "nixpkgs-lib": "nixpkgs-lib_2"
       },
       "locked": {
         "lastModified": 1722168631,
@@ -1100,7 +1118,7 @@
     },
     "nix-eval-jobs": {
       "inputs": {
-        "flake-parts": "flake-parts_2",
+        "flake-parts": "flake-parts_3",
         "nix-github-actions": "nix-github-actions",
         "nixpkgs": "nixpkgs_3",
         "treefmt-nix": "treefmt-nix"
@@ -1295,6 +1313,18 @@
       }
     },
     "nixpkgs-lib": {
+      "locked": {
+        "lastModified": 1722555339,
+        "narHash": "sha256-uFf2QeW7eAHlYXuDktm9c25OxOyCoUOQmh5SZ9amE5Q=",
+        "type": "tarball",
+        "url": "https://github.com/NixOS/nixpkgs/archive/a5d394176e64ab29c852d03346c1fc9b0b7d33eb.tar.gz"
+      },
+      "original": {
+        "type": "tarball",
+        "url": "https://github.com/NixOS/nixpkgs/archive/a5d394176e64ab29c852d03346c1fc9b0b7d33eb.tar.gz"
+      }
+    },
+    "nixpkgs-lib_2": {
       "locked": {
         "lastModified": 1722128034,
         "narHash": "sha256-L8rwzYPsLo/TYtydPJoQyYOfetuiyQYnTWYcyB8UE/s=",
@@ -1464,7 +1494,7 @@
       "inputs": {
         "devshell": "devshell_5",
         "flake-compat": "flake-compat_6",
-        "flake-parts": "flake-parts_3",
+        "flake-parts": "flake-parts_4",
         "git-hooks": "git-hooks",
         "home-manager": "home-manager_2",
         "nix-darwin": "nix-darwin",
@@ -1654,6 +1684,7 @@
         "agenix-rekey": "agenix-rekey",
         "devshell": "devshell_2",
         "disko": "disko",
+        "flake-parts": "flake-parts",
         "flake-utils": "flake-utils",
         "home-manager": "home-manager",
         "impermanence": "impermanence",
diff --git a/flake.nix b/flake.nix
index a334276..fbfe395 100644
--- a/flake.nix
+++ b/flake.nix
@@ -43,6 +43,8 @@
       inputs.nixpkgs.follows = "nixpkgs";
     };
 
+    flake-parts.url = "github:hercules-ci/flake-parts";
+
     # Bin zu faul des zu kopieren
     agenix-rekey = {
       url = "github:oddlama/agenix-rekey";
@@ -104,107 +106,50 @@
   outputs =
     {
       self,
-      nixpkgs,
-      flake-utils,
-      agenix-rekey,
       nixos-generators,
-      pre-commit-hooks,
-      devshell,
-      nixvim,
       nixos-extra-modules,
       nix-topology,
       ...
     }@inputs:
-    let
-      inherit (nixpkgs) lib;
-      stateVersion = "23.05";
-    in
-    {
-      secretsConfig = {
-        # This should be a link to one of the age public keys is './keys'
-        masterIdentities = [ ./keys/PatC.pub ];
-        extraEncryptionPubkeys = [ ./secrets/recipients.txt ];
-      };
-      agenix-rekey = agenix-rekey.configure {
-        userFlake = self;
-        inherit (self) nodes pkgs;
-      };
+    inputs.flake-parts.lib.mkFlake { inherit inputs; } {
+      imports = [
+        ./nix/agenix-rekey.nix
+        ./nix/devshell.nix
+        ./nix/hosts.nix
+        ./nix/pkgs.nix
+        nix-topology.flakeModule
+      ];
 
-      inherit stateVersion;
-      inherit (import ./nix/hosts.nix inputs)
-        hosts
-        nixosConfigurations
-        minimalConfigurations
-        guestConfigurations
-        ;
-      nodes = self.nixosConfigurations // self.guestConfigurations;
+      systems = [
+        "x86_64-linux"
+        "aarch64-linux"
+      ];
 
-      inherit
-        (lib.foldl' lib.recursiveUpdate { } (
-          lib.mapAttrsToList (import ./nix/generate-installer-package.nix inputs) self.minimalConfigurations
-        ))
-        packages
-        ;
-    }
-    // flake-utils.lib.eachDefaultSystem (system: rec {
-      apps.setupHetznerStorageBoxes =
-        import (nixos-extra-modules + "/apps/setup-hetzner-storage-boxes.nix")
-          {
+      perSystem =
+        { pkgs, system, ... }:
+        {
+          topology.modules = [ ./nix/topology.nix ];
+          apps.setupHetznerStorageBoxes =
+            import (nixos-extra-modules + "/apps/setup-hetzner-storage-boxes.nix")
+              {
+                inherit pkgs;
+                nixosConfigurations = inputs.self.nodes;
+                decryptIdentity = builtins.head self.secretsConfig.masterIdentities;
+              };
+          packages.live-iso = nixos-generators.nixosGenerate {
             inherit pkgs;
-            nixosConfigurations = self.nodes;
-            decryptIdentity = builtins.head self.secretsConfig.masterIdentities;
+            modules = [
+              ./nix/installer-configuration.nix
+              ./config/basic/ssh.nix
+            ];
+            format =
+              {
+                x86_64-linux = "install-iso";
+                aarch64-linux = "sd-aarch64-installer";
+              }
+              .${system};
           };
-      pkgs = import nixpkgs {
-        overlays =
-          import ./lib inputs
-          ++ import ./pkgs
-          ++ [
-            # nixpkgs-wayland.overlay
-            nixos-extra-modules.overlays.default
-            nix-topology.overlays.default
-            devshell.overlays.default
-            agenix-rekey.overlays.default
-            nixvim.overlays.default
-          ];
-        inherit system;
-        config.allowUnfree = true;
-      };
-      packages = pkgs;
 
-      topology = import nix-topology {
-        inherit pkgs;
-        modules = [
-          { inherit (self) nixosConfigurations; }
-          ./nix/topology.nix
-        ];
-      };
-
-      images.live-iso = nixos-generators.nixosGenerate {
-        inherit pkgs;
-        modules = [
-          ./nix/installer-configuration.nix
-          ./config/basic/ssh.nix
-        ];
-        format =
-          {
-            x86_64-linux = "install-iso";
-            aarch64-linux = "sd-aarch64-installer";
-          }
-          .${system};
-      };
-
-      checks.pre-commit-check = pre-commit-hooks.lib.${system}.run {
-        src = lib.cleanSource ./.;
-        hooks = {
-          nixfmt = {
-            enable = true;
-            package = pkgs.nixfmt-rfc-style;
-          };
-          deadnix.enable = true;
-          statix.enable = true;
         };
-      };
-      devShell = import ./nix/devshell.nix inputs system;
-      formatter = pkgs.nixfmt-rfc-style;
-    });
+    };
 }
diff --git a/lib/default.nix b/lib/default.nix
deleted file mode 100644
index 5f4e218..0000000
--- a/lib/default.nix
+++ /dev/null
@@ -1 +0,0 @@
-_inputs: [ ]
diff --git a/nix/agenix-rekey.nix b/nix/agenix-rekey.nix
new file mode 100644
index 0000000..fe246d3
--- /dev/null
+++ b/nix/agenix-rekey.nix
@@ -0,0 +1,31 @@
+{ inputs, self, ... }:
+{
+  imports = [ inputs.agenix-rekey.flakeModule ];
+  flake = {
+    secretsConfig = {
+      # This should be a link to one of the age public keys in './keys'
+      masterIdentities = [ ../keys/PatC.pub ];
+      extraEncryptionPubkeys = [ ../secrets/recipients.txt ];
+    };
+  };
+  perSystem =
+    { config, ... }:
+    {
+      agenix-rekey.nodes = self.nodes;
+      devshells.default = {
+        commands = [
+          {
+            inherit (config.agenix-rekey) package;
+            help = "Edit, generate and rekey secrets";
+          }
+        ];
+        env = [
+          {
+            # Always add files to git after agenix rekey and agenix generate.
+            name = "AGENIX_REKEY_ADD_TO_GIT";
+            value = "true";
+          }
+        ];
+      };
+    };
+}
diff --git a/nix/devshell.nix b/nix/devshell.nix
index ad0223b..8aa7510 100644
--- a/nix/devshell.nix
+++ b/nix/devshell.nix
@@ -1,69 +1,80 @@
-{ self, ... }:
-system:
-let
-  pkgs = self.pkgs.${system};
-in
-pkgs.devshell.mkShell {
-  name = "nix-config";
-  packages = with pkgs; [
-    # Nix
-    nil
-
-    # Misc
-    shellcheck
-    pre-commit
-    rage
-    nix
-    nix-diff
-    nix-update
-  ];
-  commands = [
-    {
-      package = pkgs.deploy;
-      help = "build and deploy nix configurations";
-    }
-    {
-      package = pkgs.agenix-rekey;
-      help = "Edit and rekey repository secrets";
-    }
-    {
-      package = pkgs.nixfmt-rfc-style;
-      help = "Format nix code";
-    }
-    {
-      package = pkgs.statix;
-      help = "Linter for nix";
-    }
-    {
-      package = pkgs.deadnix;
-      help = "Remove dead nix code";
-    }
-    {
-      package = pkgs.nix-tree;
-      help = "Show nix closure tree";
-    }
-    {
-      package = pkgs.update-nix-fetchgit;
-      help = "Update fetcher inside nix files";
-    }
-    {
-      package = pkgs.nvd;
-      help = "List package differences between systems";
-    }
-    {
-      package = pkgs.vulnix;
-      help = "List vulnerabilities found in your system";
-    }
-  ];
-  env = [
-    {
-      name = "NIX_CONFIG";
-      value = ''
-        plugin-files = ${pkgs.nix-plugins}/lib/nix/plugins
-        extra-builtins-file = ${../nix}/extra-builtins.nix
-      '';
-    }
+{ inputs, ... }:
+{
+  imports = [
+    inputs.devshell.flakeModule
+    inputs.pre-commit-hooks.flakeModule
   ];
 
-  devshell.startup.pre-commit.text = self.checks.${system}.pre-commit-check.shellHook;
+  perSystem =
+    { config, pkgs, ... }:
+    {
+      pre-commit.settings.hooks = {
+        nixfmt = {
+          enable = true;
+          package = pkgs.nixfmt-rfc-style;
+        };
+        deadnix.enable = true;
+        statix.enable = true;
+      };
+      formatter = pkgs.nixfmt-rfc-style;
+      devshells.default = {
+        packages = with pkgs; [
+          # Nix
+          nil
+
+          # Misc
+          shellcheck
+          pre-commit
+          rage
+          nix
+          nix-diff
+          nix-update
+        ];
+        commands = [
+          {
+            package = pkgs.deploy;
+            help = "build and deploy nix configurations";
+          }
+          {
+            package = pkgs.nixfmt-rfc-style;
+            help = "Format nix code";
+          }
+          {
+            package = pkgs.statix;
+            help = "Linter for nix";
+          }
+          {
+            package = pkgs.deadnix;
+            help = "Remove dead nix code";
+          }
+          {
+            package = pkgs.nix-tree;
+            help = "Show nix closure tree";
+          }
+          {
+            package = pkgs.update-nix-fetchgit;
+            help = "Update fetcher inside nix files";
+          }
+          {
+            package = pkgs.nvd;
+            help = "List package differences between systems";
+          }
+          {
+            package = pkgs.vulnix;
+            help = "List vulnerabilities found in your system";
+          }
+        ];
+        env = [
+          {
+            name = "NIX_CONFIG";
+            value = ''
+              plugin-files = ${pkgs.nix-plugins}/lib/nix/plugins
+              extra-builtins-file = ${../nix}/extra-builtins.nix
+            '';
+          }
+        ];
+
+        devshell.startup.pre-commit.text = config.pre-commit.installationScript;
+      };
+    };
 }
diff --git a/nix/generate-installer-package.nix b/nix/generate-installer-package.nix
deleted file mode 100644
index 9075786..0000000
--- a/nix/generate-installer-package.nix
+++ /dev/null
@@ -1,40 +0,0 @@
-{ self, ... }:
-nodeName: nodeAttrs:
-let
-  #FIXME inherit nodeAttrs. system;
-  system = "x86_64-linux";
-  pkgs = self.pkgs.${system};
-
-  disko-script = pkgs.writeShellScriptBin "disko-script" "${nodeAttrs.config.system.build.diskoScript
-  }";
-  disko-mount = pkgs.writeShellScriptBin "disko-mount" "${nodeAttrs.config.system.build.mountScript}";
-  disko-format = pkgs.writeShellScriptBin "disko-format" "${nodeAttrs.config.system.build.formatScript
-  }";
-
-  install-system = pkgs.writeShellScriptBin "install-system" ''
-    set -euo pipefail
-
-    echo "Formatting disks..."
-    ${disko-script}/bin/disko-script
-
-    echo "Installing system..."
-    nixos-install --no-root-password --system ${nodeAttrs.config.system.build.toplevel}
-
-    echo "Done!"
-  '';
-
-  installer-package = pkgs.symlinkJoin {
-    name = "installer-package-${nodeName}";
-    paths = [
-      disko-script
-      disko-mount
-      disko-format
-      install-system
-    ];
-  };
-in
-{
-  # Everything required for the installer as a single package,
-  # so it can be used from an existing live system by copying the derivation.
-  packages.${system}.installer-package.${nodeName} = installer-package;
-}
diff --git a/nix/hosts.nix b/nix/hosts.nix
index 9ef8806..2bed07b 100644
--- a/nix/hosts.nix
+++ b/nix/hosts.nix
@@ -1,78 +1,85 @@
-inputs:
-let
-  inherit (inputs) self;
-  inherit (inputs.nixpkgs.lib)
-    concatMapAttrs
-    filterAttrs
-    flip
-    genAttrs
-    mapAttrs'
-    nameValuePair
-    nixosSystem
-    ;
-
-  # Creates a new nixosSystem with the correct specialArgs, pkgs and name definition
-  mkHost =
-    { minimal }:
-    name:
-    let
-      pkgs = self.pkgs.x86_64-linux;
-    in
-    nixosSystem {
-      specialArgs = {
-        # Use the correct instance lib that has our overlays
-        inherit (pkgs) lib;
-        inherit (self) nodes stateVersion;
-        inherit inputs minimal;
-      };
-      modules = [
-        {
-          # We cannot force the package set via nixpkgs.pkgs and
-          # inputs.nixpkgs.nixosModules.readOnlyPkgs, since some nixosModules
-          # like nixseparatedebuginfod depend on adding packages via nixpkgs.overlays.
-          # So we just mimic the options and overlays defined by the passed pkgs set.
-          nixpkgs.overlays = pkgs.overlays;
-          nixpkgs.config = pkgs.config;
-          node.name = name;
-          node.secretsDir = ../. + "/hosts/${name}/secrets";
-        }
-        ../hosts/${name}
-      ];
-    };
-
-  # Load the list of hosts that this flake defines, which
-  # associates the minimum amount of metadata that is necessary
-  # to instanciate hosts correctly.
-  hosts = builtins.attrNames (filterAttrs (_: type: type == "directory") (builtins.readDir ../hosts));
-  # Process each nixosHosts declaration and generatea nixosSystem definitions
-  nixosConfigurations = genAttrs hosts (mkHost {
-    minimal = false;
-  });
-  minimalConfigurations = genAttrs hosts (mkHost {
-    minimal = true;
-  });
-
-  # True NixOS nodes can define additional guest nodes that are built
-  # together with it. We collect all defined guests from each node here
-  # to allow accessing any node via the unified attribute `nodes`.
-  guestConfigurations = flip concatMapAttrs self.nixosConfigurations (
-    _: node:
-    flip mapAttrs' (node.config.guests or { }) (
-      guestName: guestDef:
-      nameValuePair guestDef.nodeName (
-        if guestDef.backend == "microvm" then
-          node.config.microvm.vms.${guestName}.config
-        else
-          node.config.containers.${guestName}.nixosConfiguration
-      )
-    )
-  );
-in
+{ inputs, ... }:
 {
-  inherit
-    hosts
-    nixosConfigurations
-    minimalConfigurations
-    guestConfigurations
-    ;
+  flake =
+    { config, lib, ... }:
+    let
+      inherit (lib)
+        concatMapAttrs
+        filterAttrs
+        flip
+        genAttrs
+        mapAttrs'
+        nameValuePair
+        ;
+
+      # Creates a new nixosSystem with the correct specialArgs, pkgs and name definition
+      mkHost =
+        { minimal }:
+        name:
+        let
+          pkgs = config.pkgs.x86_64-linux;
+          stateVersion = "23.05";
+        in
+        inputs.nixpkgs.lib.nixosSystem {
+          specialArgs = {
+            # Use the correct instance lib that has our overlays
+            inherit (pkgs) lib;
+            inherit (config) nodes;
+            inherit inputs minimal stateVersion;
+          };
+          modules = [
+            {
+              # We cannot force the package set via nixpkgs.pkgs and
+              # inputs.nixpkgs.nixosModules.readOnlyPkgs, since some nixosModules
+              # like nixseparatedebuginfod depend on adding packages via nixpkgs.overlays.
+              # So we just mimic the options and overlays defined by the passed pkgs set.
+              node.name = name;
+              node.secretsDir = ../. + "/hosts/${name}/secrets";
+              nixpkgs.overlays = (import ../pkgs) ++ [
+                # nixpkgs-wayland.overlay
+                inputs.nixos-extra-modules.overlays.default
+                inputs.nix-topology.overlays.default
+                inputs.devshell.overlays.default
+                inputs.agenix-rekey.overlays.default
+                inputs.nixvim.overlays.default
+              ];
+              nixpkgs.config.allowUnfree = true;
+            }
+            ../hosts/${name}
+          ];
+        };
+
+      # Load the list of hosts that this flake defines, which
+      # associates the minimum amount of metadata that is necessary
+      # to instanciate hosts correctly.
+      hosts = builtins.attrNames (filterAttrs (_: type: type == "directory") (builtins.readDir ../hosts));
+    in
+    # Process each nixosHosts declaration and generatea nixosSystem definitions
+    {
+      nixosConfigurations = genAttrs hosts (mkHost {
+        minimal = false;
+      });
+      minimalConfigurations = genAttrs hosts (mkHost {
+        minimal = true;
+      });
+
+      # True NixOS nodes can define additional guest nodes that are built
+      # together with it. We collect all defined guests from each node here
+      # to allow accessing any node via the unified attribute `nodes`.
+      guestConfigurations = flip concatMapAttrs config.nixosConfigurations (
+        _: node:
+        flip mapAttrs' (node.config.guests or { }) (
+          guestName: guestDef:
+          nameValuePair guestDef.nodeName (
+            if guestDef.backend == "microvm" then
+              node.config.microvm.vms.${guestName}.config
+            else
+              node.config.containers.${guestName}.nixosConfiguration
+          )
+        )
+      );
+      # All nixosSystem instanciations are collected here, so that we can refer
+      # to any system via nodes.<name>
+      nodes = config.nixosConfigurations // config.guestConfigurations;
+    };
 }
diff --git a/nix/pkgs.nix b/nix/pkgs.nix
new file mode 100644
index 0000000..877827b
--- /dev/null
+++ b/nix/pkgs.nix
@@ -0,0 +1,28 @@
+{ inputs, ... }:
+{
+  imports = [
+    (
+      { lib, flake-parts-lib, ... }:
+      flake-parts-lib.mkTransposedPerSystemModule {
+        name = "pkgs";
+        file = ./pkgs.nix;
+        option = lib.mkOption { type = lib.types.unspecified; };
+      }
+    )
+  ];
+
+  perSystem =
+    { pkgs, system, ... }:
+    {
+      _module.args.pkgs = import inputs.nixpkgs {
+        inherit system;
+        config.allowUnfree = true;
+        overlays = (import ../pkgs/default.nix) ++ [
+          inputs.nix-topology.overlays.default
+          inputs.nixos-extra-modules.overlays.default
+        ];
+      };
+
+      inherit pkgs;
+    };
+}