diff --git a/tidepool/src/lib/packages.nix b/tidepool/src/lib/packages.nix
index fafb17d..93fa5d1 100644
--- a/tidepool/src/lib/packages.nix
+++ b/tidepool/src/lib/packages.nix
@@ -166,6 +166,7 @@ in
               builtins.toJSON (
                 builtins.removeAttrs value [
                   "deps"
+                  "package"
                   "__toString"
                 ]
                 // {
diff --git a/tidepool/src/packages/aux/a.nix b/tidepool/src/packages/aux/a.nix
index 692adff..58c6db4 100644
--- a/tidepool/src/packages/aux/a.nix
+++ b/tidepool/src/packages/aux/a.nix
@@ -27,7 +27,7 @@ in
               }
             ];
 
-            builder = builders.basic;
+            builder = builders.foundation.basic;
 
             deps.host.host = {
               inherit (packages.aux) b;
diff --git a/tidepool/src/packages/aux/b.nix b/tidepool/src/packages/aux/b.nix
index 141be66..92a75da 100644
--- a/tidepool/src/packages/aux/b.nix
+++ b/tidepool/src/packages/aux/b.nix
@@ -33,7 +33,7 @@ in
 
             custom = true;
 
-            builder = builders.basic;
+            builder = builders.foundation.basic;
 
             deps = {
               build = {
diff --git a/tidepool/src/packages/aux/c.nix b/tidepool/src/packages/aux/c.nix
index 96229a8..024918c 100644
--- a/tidepool/src/packages/aux/c.nix
+++ b/tidepool/src/packages/aux/c.nix
@@ -38,7 +38,7 @@ in
 
             custom = true;
 
-            builder = builders.basic;
+            builder = builders.foundation.basic;
 
             context = {
               "foundation:cflags" = [ "-I $AUX_C/include" ];