diff --git a/ofborg/Cargo.nix b/Cargo.nix
similarity index 92%
rename from ofborg/Cargo.nix
rename to Cargo.nix
index 506622a..5b38965 100644
--- a/ofborg/Cargo.nix
+++ b/Cargo.nix
@@ -112,7 +112,8 @@ rec {
       version = "0.1.8";
       authors = [ "Graham Christensen <graham@grahamc.com>" ];
       edition = "2018";
-      src = include [ "Cargo.toml" "Cargo.lock" "src" "test-srcs" "build.rs" ] ./.;
+      src = include [ "Cargo.toml" "ofborg" ] ./.;
+      workspace_member = "ofborg";
       build = "build.rs";
       dependencies = mapFeatures features ([
         (crates."amqp"."${deps."ofborg"."0.1.8"."amqp"}" deps)
@@ -183,12 +184,38 @@ rec {
     ];
 
 
+# end
+# ofborg-simple-build-0.1.0
+
+    crates.ofborg_simple_build."0.1.0" = deps: { features?(features_.ofborg_simple_build."0.1.0" deps {}) }: buildRustCrate {
+      crateName = "ofborg-simple-build";
+      version = "0.1.0";
+      authors = [ "Daiderd Jordan <daiderd@gmail.com>" ];
+      edition = "2018";
+      src = include [ "Cargo.toml" "ofborg-simple-build" ] ./.;
+      workspace_member = "ofborg-simple-build";
+      dependencies = mapFeatures features ([
+        (cratesIO.crates."log"."${deps."ofborg_simple_build"."0.1.0"."log"}" deps)
+        (crates."ofborg"."${deps."ofborg_simple_build"."0.1.0"."ofborg"}" deps)
+      ]);
+    };
+    features_.ofborg_simple_build."0.1.0" = deps: f: updateFeatures f (rec {
+      log."${deps.ofborg_simple_build."0.1.0".log}".default = true;
+      ofborg."${deps.ofborg_simple_build."0.1.0".ofborg}".default = true;
+      ofborg_simple_build."0.1.0".default = (f.ofborg_simple_build."0.1.0".default or true);
+    }) [
+      (cratesIO.features_.log."${deps."ofborg_simple_build"."0.1.0"."log"}" deps)
+      (features_.ofborg."${deps."ofborg_simple_build"."0.1.0"."ofborg"}" deps)
+    ];
+
+
 # end
 
   };
 
   ofborg = crates.crates.ofborg."0.1.8" deps;
-  __all = [ (ofborg {}) ];
+  ofborg_simple_build = crates.crates.ofborg_simple_build."0.1.0" deps;
+  __all = [ (ofborg {}) (ofborg_simple_build {}) ];
   deps.aho_corasick."0.5.3" = {
     memchr = "0.1.11";
   };
@@ -389,6 +416,10 @@ rec {
     tempfile = "2.2.0";
     uuid = "0.4.0";
   };
+  deps.ofborg_simple_build."0.1.0" = {
+    log = "0.3.8";
+    ofborg = "0.1.8";
+  };
   deps.openssl."0.9.24" = {
     bitflags = "0.9.1";
     foreign_types = "0.3.2";
diff --git a/ofborg/crates-io.list b/crates-io.list
similarity index 100%
rename from ofborg/crates-io.list
rename to crates-io.list
diff --git a/ofborg/crates-io.nix b/crates-io.nix
similarity index 100%
rename from ofborg/crates-io.nix
rename to crates-io.nix
diff --git a/default.nix b/default.nix
index 8772120..2096daf 100644
--- a/default.nix
+++ b/default.nix
@@ -1,20 +1,13 @@
 { pkgs ? import ./nix { overlays = [ (import ./nix/overlay.nix) ]; } }:
 
 let
-  ofborgOverrides = {
-    crateOverrides = pkgs.defaultCrateOverrides // {
-      ofborg = attrs: {
-        buildInputs = pkgs.lib.optional pkgs.stdenv.isDarwin
-          pkgs.darwin.apple_sdk.frameworks.Security;
-      };
-    };
+  ofborgCrates = pkgs.callPackage ./Cargo.nix {
+    cratesIO = pkgs.callPackage ./crates-io.nix {};
   };
 
-  drv = ((pkgs.callPackage ./ofborg/Cargo.nix {
-    cratesIO = pkgs.callPackage ./ofborg/crates-io.nix {};
-  }).ofborg {}).override { release = false; };
+  drv = ofborgCrates.ofborg {};
 
-  src = stripDeps (drv.override ofborgOverrides);
+  src = stripDeps (drv.override { release = pkgs.stdenv.isDarwin; });
 
   stripDeps = pkg: pkgs.runCommand "${pkg.name}-deps-stripped" {}
   ''
@@ -27,6 +20,8 @@ let
 in
 
 {
+  ofborg.simple-build = ofborgCrates.ofborg_simple_build {};
+
   ofborg.rs = pkgs.runCommand "ofborg-rs-symlink-compat" { inherit src; } ''
     mkdir -p $out/bin
     for f in $(find $src -type f); do
diff --git a/nix/overlay.nix b/nix/overlay.nix
index 7e1b7a5..d874abd 100644
--- a/nix/overlay.nix
+++ b/nix/overlay.nix
@@ -1,5 +1,14 @@
-(self: super: {
+(self: super:
+{
   defaultCrateOverrides = super.defaultCrateOverrides // {
+    ofborg = attrs: {
+      buildInputs = with self.darwin.apple_sdk.frameworks;
+        super.lib.optional super.stdenv.isDarwin Security;
+    };
+    ofborg-simple-build = attrs: {
+      buildInputs = with self.darwin.apple_sdk.frameworks;
+        super.lib.optional super.stdenv.isDarwin Security;
+    };
     openssl-sys = attrs: {
       buildInputs = [ self.openssl_1_0_2 ];
       nativeBuildInputs = [ self.pkgconfig ];
diff --git a/nix/update-carnix.sh b/nix/update-carnix.sh
index 7cf3cd2..d5da7ca 100755
--- a/nix/update-carnix.sh
+++ b/nix/update-carnix.sh
@@ -2,7 +2,5 @@
 
 set -eu
 
-cd ofborg
-
 cargo build
 carnix generate-nix --src .
diff --git a/ofborg-simple-build/Cargo.toml b/ofborg-simple-build/Cargo.toml
index b1bb6b6..5a1a241 100644
--- a/ofborg-simple-build/Cargo.toml
+++ b/ofborg-simple-build/Cargo.toml
@@ -2,6 +2,7 @@
 name = "ofborg-simple-build"
 version = "0.1.0"
 authors = ["Daiderd Jordan <daiderd@gmail.com>"]
+include = ["Cargo.toml", "ofborg-simple-build"]  # TODO remove when carnix is fixed
 edition = "2018"
 
 [dependencies]
diff --git a/ofborg/Cargo.toml b/ofborg/Cargo.toml
index 4a49573..1af67f1 100644
--- a/ofborg/Cargo.toml
+++ b/ofborg/Cargo.toml
@@ -2,7 +2,7 @@
 name = "ofborg"
 version = "0.1.8"
 authors = ["Graham Christensen <graham@grahamc.com>"]
-include = ["Cargo.toml", "Cargo.lock", "src", "test-srcs", "build.rs"]
+include = ["Cargo.toml", "ofborg"]  # TODO remove when carnix is fixed
 build = "build.rs"
 edition = "2018"