diff --git a/default.nix b/default.nix
index d9b1bcbddb8..d54328097b2 100644
--- a/default.nix
+++ b/default.nix
@@ -1,5 +1,10 @@
-{ customConfig ? {}
-, target ? builtins.currentSystem }:
+let
+  lib = (import ./lib.nix).pkgs.lib;
+  commitIdFromGitRepo = import ./nix/commit-id.nix { inherit lib; };
+in { customConfig ? {}
+, target ? builtins.currentSystem
+, gitrev ? commitIdFromGitRepo ./.git
+}:
 #
 #
 # Generated targets include anything from stack.yaml (via nix-tools:stack-to-nix and the nix/regenerate.sh script)
@@ -23,7 +28,7 @@
 
 let
   system = if target != "x86_64-windows" then target else builtins.currentSystem;
-  crossSystem = if target == "x86_64-windows" then commonLib.pkgs.lib.systems.examples.mingwW64 else null;
+  crossSystem = if target == "x86_64-windows" then lib.systems.examples.mingwW64 else null;
   # commonLib provides iohk-nix tooling and extra libraries specific to cardano-sl.
   commonLib = import ./lib.nix;
   pkgs = import commonLib.nixpkgs { inherit system crossSystem; };
@@ -42,7 +47,8 @@ let
   };
   # daedalus bridge contains the binaries and config files daedalus requires
   daedalus-bridge = pkgs.callPackage ./nix/daedalus-bridge.nix {
-    inherit nixTools cardanoConfig;
+    inherit nixTools cardanoConfig gitrev;
+    version = nixTools.nix-tools._raw.cardano-sl.identifier.version;
   };
 in {
   inherit pkgs;
diff --git a/nix/daedalus-bridge.nix b/nix/daedalus-bridge.nix
index 76ffe58ce0f..f4213a4bbbe 100644
--- a/nix/daedalus-bridge.nix
+++ b/nix/daedalus-bridge.nix
@@ -1,6 +1,6 @@
 { runCommand, stdenv
 , nixTools, cardanoConfig
-, version ? "unstable", gitrev ? "abcdef", buildId ? null }:
+, version ? "unstable", gitrev, buildId ? null }:
 
 with stdenv.lib;
 
diff --git a/release.nix b/release.nix
index 8e2beb97822..d8de5679e94 100644
--- a/release.nix
+++ b/release.nix
@@ -1,7 +1,16 @@
 let
   commonLib = import ./lib.nix;
-  default = import ./. {};
   disabled = [];
+in { cardano ? { outPath = ./.; rev = "abcdef"; }, ... }@args:
+let
+  getArchDefault = system: let
+    table = {
+      x86_64-linux = import ./. { target = "x86_64-linux"; gitrev = cardano.rev; };
+      x86_64-darwin = import ./. { target = "x86_64-darwin"; gitrev = cardano.rev; };
+      x86_64-windows = import ./. { target = "x86_64-windows"; gitrev = cardano.rev; };
+    };
+  in table.${system};
+  default = getArchDefault builtins.currentSystem;
   makeConnectScripts = cluster: let
     getScript = name: {
       x86_64-linux = (getArchDefault "x86_64-linux").connectScripts.${cluster}.${name};
@@ -13,7 +22,7 @@ let
     wallet = getScript "wallet";
   };
   wrapDockerImage = cluster: let
-    images = default.dockerImages;
+    images = (getArchDefault "x86_64-linux").dockerImages;
     wrapImage = image: commonLib.pkgs.runCommand "${image.name}-hydra" {} ''
       mkdir -pv $out/nix-support/
       cat <<EOF > $out/nix-support/hydra-build-products
@@ -31,14 +40,7 @@ let
       dockerImage = wrapDockerImage cluster;
     };
   };
-  getArchDefault = system: let
-    table = {
-      x86_64-linux = import ./. { target = "x86_64-linux"; };
-      x86_64-darwin = import ./. { target = "x86_64-darwin"; };
-      x86_64-windows = import ./. { target = "x86_64-windows"; };
-    };
-  in table.${system};
-in { cardano ? { outPath = ./.; rev = "abcdef"; }, ... }@args:
+in
 commonLib.pkgs.lib.mapAttrsRecursiveCond
 (as: !(as ? "type" && as.type == "derivation"))
 (path: v: if (builtins.elem path disabled) then null else v)