diff --git a/flake.nix b/flake.nix
index 3632f207..287779de 100644
--- a/flake.nix
+++ b/flake.nix
@@ -89,7 +89,6 @@
     {
       imports = [
         inputs.devshell.flakeModule
-        inputs.flake-parts.flakeModules.easyOverlay
         inputs.flake-root.flakeModule
         inputs.treefmt-nix.flakeModule
         ./mkdocs.nix
diff --git a/modules/default.nix b/modules/default.nix
index a00b7774..6130ed1d 100644
--- a/modules/default.nix
+++ b/modules/default.nix
@@ -1,10 +1,10 @@
-{
+{self, ...}: {
   imports = [
     ./testing.nix
   ];
 
   # create a default nixos module which mixes in all modules
-  flake.nixosModules.default = {
+  flake.nixosModules.default = {pkgs, ...}: {
     imports = [
       ./backup
       ./erigon
@@ -18,5 +18,7 @@
       ./prysm-validator
       ./restore
     ];
+
+    _module.args.ethereum-nix = self.packages.${pkgs.system};
   };
 }
diff --git a/modules/mev-boost/default.nix b/modules/mev-boost/default.nix
index 6a868bfe..dd44c72d 100644
--- a/modules/mev-boost/default.nix
+++ b/modules/mev-boost/default.nix
@@ -1,7 +1,7 @@
 {
   config,
   lib,
-  pkgs,
+  ethereum-nix,
   ...
 }: let
   modulesLib = import ../lib.nix lib;
@@ -15,7 +15,7 @@
   eachMevBoost = config.services.ethereum.mev-boost;
 in {
   ###### interface
-  inherit (import ./options.nix {inherit lib pkgs;}) options;
+  inherit (import ./options.nix {inherit lib ethereum-nix;}) options;
 
   ###### implementation
 
diff --git a/modules/mev-boost/options.nix b/modules/mev-boost/options.nix
index fff0f90e..dcb4acbe 100644
--- a/modules/mev-boost/options.nix
+++ b/modules/mev-boost/options.nix
@@ -1,6 +1,6 @@
 {
   lib,
-  pkgs,
+  ethereum-nix,
   ...
 }: let
   args = import ./args.nix lib;
@@ -18,8 +18,8 @@
       };
 
       package = mkOption {
-        default = pkgs.mev-boost;
-        defaultText = literalExpression "pkgs.mev-boost";
+        default = ethereum-nix.mev-boost;
+        defaultText = literalExpression "ethereum-nix.mev-boost";
         type = types.package;
         description = mdDoc "Package to use for mev-boost binary";
       };
diff --git a/modules/nethermind/default.nix b/modules/nethermind/default.nix
index 58e1c29a..b26645e6 100644
--- a/modules/nethermind/default.nix
+++ b/modules/nethermind/default.nix
@@ -1,7 +1,7 @@
 {
   config,
   lib,
-  pkgs,
+  ethereum-nix,
   ...
 }: let
   inherit
@@ -34,7 +34,7 @@
   eachNethermind = config.services.ethereum.nethermind;
 in {
   ###### interface
-  inherit (import ./options.nix {inherit lib pkgs;}) options;
+  inherit (import ./options.nix {inherit lib ethereum-nix;}) options;
 
   ###### implementation
 
diff --git a/modules/nethermind/options.nix b/modules/nethermind/options.nix
index 78fa8a69..764e14fc 100644
--- a/modules/nethermind/options.nix
+++ b/modules/nethermind/options.nix
@@ -1,6 +1,6 @@
 {
   lib,
-  pkgs,
+  ethereum-nix,
   ...
 }: let
   args = import ./args.nix lib;
@@ -11,7 +11,7 @@
 
       package = mkOption {
         type = types.package;
-        default = pkgs.nethermind;
+        default = ethereum-nix.nethermind;
         defaultText = literalExpression "pkgs.nethermind";
         description = mdDoc "Package to use as Nethermind.";
       };
diff --git a/modules/prysm-validator/default.nix b/modules/prysm-validator/default.nix
index 36f20dff..80400147 100644
--- a/modules/prysm-validator/default.nix
+++ b/modules/prysm-validator/default.nix
@@ -1,7 +1,7 @@
 {
   config,
   lib,
-  pkgs,
+  ethereum-nix,
   ...
 }: let
   modulesLib = import ../lib.nix lib;
@@ -16,7 +16,7 @@
   eachValidator = config.services.ethereum.prysm-validator;
 in {
   ###### interface
-  inherit (import ./options.nix {inherit lib pkgs;}) options;
+  inherit (import ./options.nix {inherit lib ethereum-nix;}) options;
 
   ###### implementation
 
diff --git a/modules/prysm-validator/default.test.nix b/modules/prysm-validator/default.test.nix
index c55ff478..3825ffe3 100644
--- a/modules/prysm-validator/default.test.nix
+++ b/modules/prysm-validator/default.test.nix
@@ -3,6 +3,7 @@
 
   module = {
     pkgs,
+    ethereum-nix,
     lib,
     ...
   }:
@@ -18,7 +19,7 @@
         mnemonic="tooth moon mad fun romance athlete envelope next mix divert tip top symbol resemble stock family melody desk sheriff drift bargain need jaguar method"
         echo $mnemonic > /tmp/wallet/mnemonic.txt
 
-        ${pkgs.prysm}/bin/validator wallet create \
+        ${ethereum-nix.prysm}/bin/validator wallet create \
           --accept-terms-of-use \
           --goerli \
           --keymanager-kind="direct" \
@@ -38,7 +39,7 @@
             writableStore = true;
           };
 
-          environment.systemPackages = [wallet-generator pkgs.ethdo pkgs.prysm];
+          environment.systemPackages = [wallet-generator ethereum-nix.ethdo ethereum-nix.prysm];
 
           services.ethereum.prysm-validator.test = {
             enable = true;
diff --git a/modules/prysm-validator/options.nix b/modules/prysm-validator/options.nix
index 4aa637d1..f8608cf0 100644
--- a/modules/prysm-validator/options.nix
+++ b/modules/prysm-validator/options.nix
@@ -1,6 +1,6 @@
 {
   lib,
-  pkgs,
+  ethereum-nix,
   ...
 }: let
   args = import ./args.nix lib;
@@ -18,8 +18,8 @@
       };
 
       package = mkOption {
-        default = pkgs.prysm;
-        defaultText = literalExpression "pkgs.prysm";
+        default = ethereum-nix.prysm;
+        defaultText = literalExpression "ethereum-nix.prysm";
         type = types.package;
         description = mdDoc "Package to use for Prysm binary";
       };
diff --git a/modules/testing.nix b/modules/testing.nix
index 2c7cc577..149d8391 100644
--- a/modules/testing.nix
+++ b/modules/testing.nix
@@ -1,22 +1,14 @@
 {
   self,
-  inputs,
   ...
 }: {
   perSystem = {
     lib,
     config,
     system,
+    pkgs,
     ...
-  }: let
-    # create a custom nixpkgs with our flake packages available
-    pkgs = import inputs.nixpkgs {
-      inherit system;
-      overlays = [
-        self.overlays.default
-      ];
-    };
-  in {
+  }: {
     ########################################
     ## Interface
     ########################################
@@ -57,8 +49,8 @@
           # speed up evaluation by skipping docs
           defaults.documentation.enable = lib.mkDefault false;
 
-          # make self available in test modules and our custom pkgs
-          node.specialArgs = {inherit self pkgs;};
+          # make self available in test modules
+          node.specialArgs = {inherit self;};
 
           # import all of our flake nixos modules by default
           defaults.imports = [
diff --git a/packages/default.nix b/packages/default.nix
index 860cd6ca..6392fd44 100644
--- a/packages/default.nix
+++ b/packages/default.nix
@@ -171,7 +171,5 @@
       tx-fuzz.bin = "tx-fuzz";
       zcli.bin = "zcli";
     };
-
-    overlayAttrs = self'.packages;
   };
 }