diff --git a/apps/cachix.nix b/apps/cachix.nix
new file mode 100644
index 0000000..313cbe5
--- /dev/null
+++ b/apps/cachix.nix
@@ -0,0 +1,12 @@
+{
+  writeShellApplication,
+  cachix,
+  stdenv,
+}:
+writeShellApplication {
+  name = "cachix";
+  runtimeInputs = [cachix];
+  text = ''
+    exec cachix -d ./cachix -m nixos "$@"
+  '';
+}
diff --git a/cachix/cachix.nix b/cachix/cachix.nix
new file mode 100644
index 0000000..a270785
--- /dev/null
+++ b/cachix/cachix.nix
@@ -0,0 +1,13 @@
+# WARN: this file will get overwritten by $ cachix use <name>
+{
+  pkgs,
+  lib,
+  ...
+}: let
+  folder = ./cachix;
+  toImport = name: value: folder + ("/" + name);
+  filterCaches = key: value: value == "regular" && lib.hasSuffix ".nix" key;
+  imports = lib.mapAttrsToList toImport (lib.filterAttrs filterCaches (builtins.readDir folder));
+in {
+  inherit imports;
+}
diff --git a/cachix/cachix/nix-community.nix b/cachix/cachix/nix-community.nix
new file mode 100644
index 0000000..28de7e4
--- /dev/null
+++ b/cachix/cachix/nix-community.nix
@@ -0,0 +1,12 @@
+{
+  nix = {
+    settings = {
+      substituters = [
+        "https://nix-community.cachix.org"
+      ];
+      trusted-public-keys = [
+        "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
+      ];
+    };
+  };
+}
diff --git a/cachix/cachix/nixos.nix b/cachix/cachix/nixos.nix
new file mode 100644
index 0000000..9bc5acb
--- /dev/null
+++ b/cachix/cachix/nixos.nix
@@ -0,0 +1,12 @@
+{
+  nix = {
+    settings = {
+      substituters = [
+        "https://cache.nixos.org/"
+      ];
+      trusted-public-keys = [
+        "cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY="
+      ];
+    };
+  };
+}
diff --git a/cachix/cachix/willemml.nix b/cachix/cachix/willemml.nix
new file mode 100644
index 0000000..4eb8adb
--- /dev/null
+++ b/cachix/cachix/willemml.nix
@@ -0,0 +1,12 @@
+{
+  nix = {
+    settings = {
+      substituters = [
+        "https://willemml.cachix.org"
+      ];
+      trusted-public-keys = [
+        "willemml.cachix.org-1:A8M1pBOuBmA6f4Pq4+VNO0r4Joi2I3DZI72V3U+YnKg="
+      ];
+    };
+  };
+}
diff --git a/flake-parts/home-manager/modules.nix b/flake-parts/home-manager/modules.nix
index 4077994..b594559 100644
--- a/flake-parts/home-manager/modules.nix
+++ b/flake-parts/home-manager/modules.nix
@@ -32,6 +32,8 @@
         home.sessionVariables.NIX_PATH = "nixpkgs=${inputs.nixpkgs}";
         nix.registry.nixpkgs.flake = inputs.nixpkgs;
       };
+
+      nix-useCachix = ../../cachix/cachix.nix;
     }
     // modules;
 }
diff --git a/flake-parts/home-manager/users.nix b/flake-parts/home-manager/users.nix
index e990b82..535aebc 100644
--- a/flake-parts/home-manager/users.nix
+++ b/flake-parts/home-manager/users.nix
@@ -8,6 +8,7 @@
     homeManagerModules.user-willem = {
       imports = [
         self.homeManagerModules.default
+        self.homeManagerModules.nix-useCachix
         self.homeManagerModules.nixpkgs-useFlakeNixpkgs
         self.homeManagerModules.nixpkgs-config
       ];
diff --git a/flake-parts/nixos/hosts.nix b/flake-parts/nixos/hosts.nix
index 088df82..285a7dc 100644
--- a/flake-parts/nixos/hosts.nix
+++ b/flake-parts/nixos/hosts.nix
@@ -6,11 +6,13 @@
   flake = {
     nixosModules.base = {config, ...}: {
       imports = [
+        ../../nixos/cachix
         ../../nixos/profiles/common.nix
         ../../nixos/profiles/linux-common.nix
         inputs.home-manager.nixosModules.home-manager
         self.nixosModules.default
         self.nixosModules.home-manager-integration
+        self.nixosModules.nix-useCachix
         self.nixosModules.nixpkgs-useFlakeNixpkgs
       ];
 
@@ -28,6 +30,8 @@
         inputs.home-manager.darwinModules.home-manager
         self.nixosModules.custom-linkNixInputs
         self.nixosModules.home-manager-integration
+        self.nixosModules.nix-useCachix
+        self.nixosModules.nixpkgs-useFlakeNixpkgs
       ];
 
       nixpkgs.overlays = builtins.attrValues self.overlays;
diff --git a/flake-parts/nixos/modules.nix b/flake-parts/nixos/modules.nix
index 20448eb..668d7ff 100644
--- a/flake-parts/nixos/modules.nix
+++ b/flake-parts/nixos/modules.nix
@@ -25,6 +25,8 @@
         nix.registry.nixpkgs.flake = inputs.nixpkgs;
       };
 
+      nix-useCachix = ../../cachix/cachix.nix;
+
       home-manager-integration = {
         config.home-manager = {
           useGlobalPkgs = true;