diff --git a/flake.nix b/flake.nix
deleted file mode 100644
index 4d5b7d3..0000000
--- a/flake.nix
+++ /dev/null
@@ -1,56 +0,0 @@
-{
-  description = "NixOS system flake";
-
-  inputs = {
-    nixpkgs.url = "github:NixOS/nixpkgs/nixos-22.11";
-    nixos-unstable.url = "github:NixOS/nixpkgs/nixos-unstable";
-    nixos-hardware.url = "github:NixOS/nixos-hardware/master";
-    home-manager = {
-      url = "github:nix-community/home-manager/release-22.11";
-      inputs.nixpkgs.follows = "nixpkgs";
-    };
-    nur.url = "github:nix-community/NUR";
-    # TODO: possible make this a flake as well
-    mysecrets = {
-      flake = false;
-      url = "git+ssh://gitea@git.orlives.de:2342/schmittlauch/home-manager_secrets.git";
-    };
-
-  };
-
-  outputs = 
-  { self, nixpkgs, nur, ... }@inputs: 
-  let
-    system = "x86_64-linux";
-    pkgs = nixpkgs.legacyPackages.${system};
-  in
-  {
-
-    nixosConfigurations.thinknix = nixpkgs.lib.nixosSystem {
-      inherit system;
-      modules = [ ./nixos/configuration.nix ];
-      # necessary to make the top-level inputs available to system configuration
-      specialArgs = { inherit inputs; };
-    };
-    homeConfigurations.spiollinux = inputs.home-manager.lib.homeManagerConfiguration {
-      inherit pkgs;
-
-      modules = [
-        {
-          imports = [
-            nur.hmModules.nur
-            ./home/home.nix
-          ];
-          # extends the home config
-          home.username = "spiollinux";
-          home.homeDirectory = "/home/spiollinux";
-        }
-      ];
-      # Optionally use extraSpecialArgs
-      # to pass through arguments to home.nix
-      extraSpecialArgs = {
-        inherit inputs;
-      };
-    };
-  };
-}
diff --git a/home/config.nix b/home/config.nix
index 66a4143..cd50baa 100644
--- a/home/config.nix
+++ b/home/config.nix
@@ -1,5 +1,8 @@
-{ lib, ...}:
-{
+let 
+  lib = (import <nixpkgs> {}).lib;
+
+in
+  {
 
     firefox.enablePlasmaBrowserIntegration = true;
     firefox-bin.enablePlasmaBrowserIntegration = true;
diff --git a/home/home.nix b/home/home.nix
index 9a87b78..dbc5007 100644
--- a/home/home.nix
+++ b/home/home.nix
@@ -1,9 +1,12 @@
-{ pkgs, inputs, config, ... }:
+{ pkgs, ... }:
 
 with pkgs;
 let
   # nix-channel --add https://nixos.org/channels/nixos-unstable nixos-unstable
-  unstable = inputs.nixos-unstable;
+  unstable = import <nixos-unstable> { };
+  # nix-channel --add https://github.com/nix-community/NUR/archive/master.tar.gz NUR
+  nur = import <NUR> { inherit pkgs; };
+  myNur = nur.repos.schmittlauch;
 
   desktopApps = [
     firefox
@@ -119,7 +122,7 @@ let
     reptyr # re-bind running program to other tty
     xclip
     unzip
-    config.nur.repos.schmittlauch.lolcommits # from NUR
+    myNur.lolcommits # from NUR
   ];
 
   nixHelpers = [
@@ -245,7 +248,7 @@ let
     (iosevka-bin.override {
       variant = "curly-slab";
     })
-    config.nur.repos.schmittlauch.vollkorn
+    myNur.vollkorn
     # TODO: humor-sans
   ];
 
@@ -257,8 +260,6 @@ let
 in
 {
 
-  nixpkgs.overlays = (import ./overlays.nix);
-
   home.packages =
     desktopApps
     ++ latexApps
@@ -275,7 +276,7 @@ in
 
   programs.home-manager.enable = true;
   programs.home-manager.path = "$HOME/.nix-defexpr/channels/home-manager";
-  home.stateVersion = "22.11";
+  home.stateVersion = "18.09";
 
   programs.direnv =
     {
@@ -301,7 +302,7 @@ in
       enable = true;
       # ssh host config
       matchBlocks =
-        import "${inputs.mysecrets}/ssh_hosts.nix";
+        import ./secrets/ssh_hosts.nix;
     };
 
   programs.tmux = {
@@ -330,7 +331,7 @@ in
   fonts.fontconfig.enable = true;
 
   programs.git =
-    let contacts = import "${inputs.mysecrets}/contacts.nix";
+    let contacts = import ./secrets/contacts.nix;
     in
     {
       enable = true;
diff --git a/nixos/configuration.nix b/nixos/configuration.nix
index df6224e..af6b0f3 100644
--- a/nixos/configuration.nix
+++ b/nixos/configuration.nix
@@ -2,10 +2,10 @@
 # your system.  Help is available in the configuration.nix(5) man page
 # and in the NixOS manual (accessible by running ‘nixos-help’).
 
-{ config, pkgs, lib, inputs, ... }:
+{ config, pkgs, ... }:
 
 let
-  unstable = inputs.nixos-unstable;
+  unstable = import <nixos-unstable> { };
   localfork = import /home/spiollinux/src/nixpkgs { };
 
 in
@@ -234,22 +234,15 @@ in
   # Enable all sysrq functions (useful to recover from some issues):
   boot.kernel.sysctl."kernel.sysrq" = 1; # NixOS default: 16 (only the sync command)
 
-  nix = {
-    # expose all flake inputs through nix Path and registry
-    registry = (lib.mapAttrs (_: value: { flake = value; }) inputs) // {
-      nixpkgs.flake = inputs.nixpkgs;
-    };
-    nixPath = lib.mapAttrsToList (key: value: "${key}=${value.to.path}") config.nix.registry;
   # keep build-time deps around for offline-rebuilding
-    settings = {
-      # keep around all inputs necessary for offline-rebuilding the system
-      keep-outputs = true;
-      keep-derivations = true;
-      trusted-users = [ "spiollinux" ];
-      experimental-features = [ "nix-command" "flakes" ];
-      # use all cores for building
-      cores = 0;
-    };
+  nix.settings = {
+    # keep around all inputs necessary for offline-rebuilding the system
+    keep-outputs = true;
+    keep-derivations = true;
+    trusted-users = [ "spiollinux" ];
+    experimental-features = [ "nix-command" "flakes" ];
+    # use all cores for building
+    cores = 0;
   };
   # override tmpdir for daemon
   #systemd.services.nix-daemon.environment.TMPDIR = "/var/tmp";
diff --git a/nixos/hardware-configuration.nix b/nixos/hardware-configuration.nix
index 4c1b5c1..77fed4a 100644
--- a/nixos/hardware-configuration.nix
+++ b/nixos/hardware-configuration.nix
@@ -1,4 +1,4 @@
-{ config, lib, pkgs, modulesPath, inputs, ... }:
+{ config, lib, pkgs, ... }:
 
 
 let
@@ -7,8 +7,13 @@ in
 {
   imports =
     [
-      (modulesPath + "/installer/scan/not-detected.nix")
-      (inputs.nixos-hardware + "/lenovo/thinkpad/t440s")
+      <nixpkgs/nixos/modules/installer/scan/not-detected.nix>
+      (
+        builtins.fetchGit {
+          url = "https://github.com/NixOS/nixos-hardware";
+          rev = "a4bc66709604ab78abc575b60baa6d23ae027a59";
+        } + "/lenovo/thinkpad/t440s"
+      )
     ];
 
   boot.initrd.availableKernelModules = [ "xhci_pci" "ehci_pci" "ahci" "usb_storage" "sd_mod" "rtsx_pci_sdmmc" ];