diff --git a/flake.nix b/flake.nix
index 03bdcdc8c..62705d292 100644
--- a/flake.nix
+++ b/flake.nix
@@ -13,28 +13,13 @@
 
       in rec {
         packages = rec {
-          concrete-contracts = ["OrderBook" "GenericPoolOrderBookV3FlashBorrower" "GenericPoolOrderBookV3ArbOrderTaker" "RouteProcessorOrderBookV3ArbOrderTaker"];
-          build-meta-cmd = contract: ''
-            rain meta build \
-              -i <(rain meta solc artifact -c abi -i out/${contract}.sol/${contract}.json) -m solidity-abi-v2 -t json -e deflate -l en \
-              -i src/concrete/${contract}.meta.json -m interpreter-caller-meta-v1 -t json -e deflate -l en \
-          '';
-          build-single-meta = contract: ''
-            ${(build-meta-cmd contract)} -o meta/${contract}.rain.meta;
-          '';
-
-          build-meta = rainix.mkTask.${system} { name = "build-meta"; body = (''
-          set -x;
-          mkdir -p meta;
-          forge build --force;
-          '' + pkgs.lib.concatStrings (map build-single-meta concrete-contracts)); };
-
           deploy-single-contract = contract: ''
             forge script script/Deploy${contract}.sol:Deploy${contract} --legacy --verify --broadcast --rpc-url "''${CI_DEPLOY_RPC_URL}" --etherscan-api-key "''${EXPLORER_VERIFICATION_KEY}" \
               --sig='run(bytes)' \
               "$( ${(build-meta-cmd contract)} -E hex )" \
               ;
           '';
+
           deploy-contracts = rainix.mkTask.${system} { name = "deploy-contracts"; body = (''
             set -euo pipefail;
             forge build --force;
diff --git a/script/DeployGenericPoolOrderBookV3ArbOrderTaker.sol b/script/DeployGenericPoolOrderBookV3ArbOrderTaker.sol
index d4952a087..7bca4ea1c 100644
--- a/script/DeployGenericPoolOrderBookV3ArbOrderTaker.sol
+++ b/script/DeployGenericPoolOrderBookV3ArbOrderTaker.sol
@@ -13,13 +13,10 @@ import {I9R_DEPLOYER} from "./DeployConstants.sol";
 /// is intended to be run on every commit by CI to a testnet such as mumbai, then
 /// cross chain deployed to whatever mainnet is required, by users.
 contract DeployGenericPoolOrderBookV3ArbOrderTaker is Script {
-    /// We are avoiding using ffi here, instead forcing the script runner to
-    /// provide the built metadata. On CI this is achieved by using the rain cli.
-    function run(bytes memory meta) external {
+    function run() external {
         uint256 deployerPrivateKey = vm.envUint("DEPLOYMENT_KEY");
 
-        console2.log("GenericPoolOrderBookV3ArbOrderTaker meta hash:");
-        console2.logBytes32(keccak256(meta));
+        bytes memory meta = hex"";
 
         vm.startBroadcast(deployerPrivateKey);
         GenericPoolOrderBookV3ArbOrderTaker deployed =
diff --git a/script/DeployGenericPoolOrderBookV3FlashBorrower.sol b/script/DeployGenericPoolOrderBookV3FlashBorrower.sol
index 5f18a1719..fb3b9a4df 100644
--- a/script/DeployGenericPoolOrderBookV3FlashBorrower.sol
+++ b/script/DeployGenericPoolOrderBookV3FlashBorrower.sol
@@ -13,13 +13,10 @@ import {I9R_DEPLOYER} from "./DeployConstants.sol";
 /// is intended to be run on every commit by CI to a testnet such as mumbai, then
 /// cross chain deployed to whatever mainnet is required, by users.
 contract DeployGenericPoolOrderBookV3FlashBorrower is Script {
-    /// We are avoiding using ffi here, instead forcing the script runner to
-    /// provide the built metadata. On CI this is achieved by using the rain cli.
-    function run(bytes memory meta) external {
+    function run() external {
         uint256 deployerPrivateKey = vm.envUint("DEPLOYMENT_KEY");
 
-        console2.log("DeployGenericPoolOrderBookV3FlashBorrower meta hash:");
-        console2.logBytes32(keccak256(meta));
+        bytes memory meta = hex"";
 
         vm.startBroadcast(deployerPrivateKey);
         GenericPoolOrderBookV3FlashBorrower deployed =
diff --git a/script/DeployOrderBook.sol b/script/DeployOrderBook.sol
index f2af4a542..2cea45ac2 100644
--- a/script/DeployOrderBook.sol
+++ b/script/DeployOrderBook.sol
@@ -6,11 +6,10 @@ import {OrderBook, DeployerDiscoverableMetaV3ConstructionConfig} from "src/concr
 import {I9R_DEPLOYER} from "./DeployConstants.sol";
 
 contract DeployOrderBook is Script {
-    function run(bytes memory meta) external {
+    function run() external {
         uint256 deployerPrivateKey = vm.envUint("DEPLOYMENT_KEY");
 
-        console2.log("DeployOrderBook meta hash:");
-        console2.logBytes32(keccak256(meta));
+        bytes memory meta = hex"";
 
         vm.startBroadcast(deployerPrivateKey);
         OrderBook deployed = new OrderBook(DeployerDiscoverableMetaV3ConstructionConfig(I9R_DEPLOYER, meta));
diff --git a/script/DeployRouteProcessorOrderBookV3ArbOrderTaker.sol b/script/DeployRouteProcessorOrderBookV3ArbOrderTaker.sol
index 07fef9cf7..7ce750908 100644
--- a/script/DeployRouteProcessorOrderBookV3ArbOrderTaker.sol
+++ b/script/DeployRouteProcessorOrderBookV3ArbOrderTaker.sol
@@ -13,13 +13,10 @@ import {I9R_DEPLOYER} from "./DeployConstants.sol";
 /// is intended to be run on every commit by CI to a testnet such as mumbai, then
 /// cross chain deployed to whatever mainnet is required, by users.
 contract DeployRouteProcessorOrderBookV3ArbOrderTaker is Script {
-    /// We are avoiding using ffi here, instead forcing the script runner to
-    /// provide the built metadata. On CI this is achieved by using the rain cli.
-    function run(bytes memory meta) external {
+    function run() external {
         uint256 deployerPrivateKey = vm.envUint("DEPLOYMENT_KEY");
 
-        console2.log("RouteProcessorOrderBookV3ArbOrderTaker meta hash:");
-        console2.logBytes32(keccak256(meta));
+        bytes memory meta = hex"";
 
         vm.startBroadcast(deployerPrivateKey);
         RouteProcessorOrderBookV3ArbOrderTaker deployed =