diff --git a/barretenberg/cpp/src/barretenberg/dsl/acir_format/serde/acir.hpp b/barretenberg/cpp/src/barretenberg/dsl/acir_format/serde/acir.hpp
index f72a3b2e724..49a8b588856 100644
--- a/barretenberg/cpp/src/barretenberg/dsl/acir_format/serde/acir.hpp
+++ b/barretenberg/cpp/src/barretenberg/dsl/acir_format/serde/acir.hpp
@@ -1063,18 +1063,7 @@ struct Directive {
         static ToLeRadix bincodeDeserialize(std::vector<uint8_t>);
     };
 
-    struct PermutationSort {
-        std::vector<std::vector<Circuit::Expression>> inputs;
-        uint32_t tuple;
-        std::vector<Circuit::Witness> bits;
-        std::vector<uint32_t> sort_by;
-
-        friend bool operator==(const PermutationSort&, const PermutationSort&);
-        std::vector<uint8_t> bincodeSerialize() const;
-        static PermutationSort bincodeDeserialize(std::vector<uint8_t>);
-    };
-
-    std::variant<ToLeRadix, PermutationSort> value;
+    std::variant<ToLeRadix> value;
 
     friend bool operator==(const Directive&, const Directive&);
     std::vector<uint8_t> bincodeSerialize() const;
@@ -1144,7 +1133,17 @@ struct Opcode {
         static MemoryInit bincodeDeserialize(std::vector<uint8_t>);
     };
 
-    std::variant<AssertZero, BlackBoxFuncCall, Directive, Brillig, MemoryOp, MemoryInit> value;
+    struct Call {
+        uint32_t id;
+        std::vector<Circuit::Witness> inputs;
+        std::vector<Circuit::Witness> outputs;
+
+        friend bool operator==(const Call&, const Call&);
+        std::vector<uint8_t> bincodeSerialize() const;
+        static Call bincodeDeserialize(std::vector<uint8_t>);
+    };
+
+    std::variant<AssertZero, BlackBoxFuncCall, Directive, Brillig, MemoryOp, MemoryInit, Call> value;
 
     friend bool operator==(const Opcode&, const Opcode&);
     std::vector<uint8_t> bincodeSerialize() const;
@@ -6450,68 +6449,6 @@ Circuit::Directive::ToLeRadix serde::Deserializable<Circuit::Directive::ToLeRadi
 
 namespace Circuit {
 
-inline bool operator==(const Directive::PermutationSort& lhs, const Directive::PermutationSort& rhs)
-{
-    if (!(lhs.inputs == rhs.inputs)) {
-        return false;
-    }
-    if (!(lhs.tuple == rhs.tuple)) {
-        return false;
-    }
-    if (!(lhs.bits == rhs.bits)) {
-        return false;
-    }
-    if (!(lhs.sort_by == rhs.sort_by)) {
-        return false;
-    }
-    return true;
-}
-
-inline std::vector<uint8_t> Directive::PermutationSort::bincodeSerialize() const
-{
-    auto serializer = serde::BincodeSerializer();
-    serde::Serializable<Directive::PermutationSort>::serialize(*this, serializer);
-    return std::move(serializer).bytes();
-}
-
-inline Directive::PermutationSort Directive::PermutationSort::bincodeDeserialize(std::vector<uint8_t> input)
-{
-    auto deserializer = serde::BincodeDeserializer(input);
-    auto value = serde::Deserializable<Directive::PermutationSort>::deserialize(deserializer);
-    if (deserializer.get_buffer_offset() < input.size()) {
-        throw_or_abort("Some input bytes were not read");
-    }
-    return value;
-}
-
-} // end of namespace Circuit
-
-template <>
-template <typename Serializer>
-void serde::Serializable<Circuit::Directive::PermutationSort>::serialize(const Circuit::Directive::PermutationSort& obj,
-                                                                         Serializer& serializer)
-{
-    serde::Serializable<decltype(obj.inputs)>::serialize(obj.inputs, serializer);
-    serde::Serializable<decltype(obj.tuple)>::serialize(obj.tuple, serializer);
-    serde::Serializable<decltype(obj.bits)>::serialize(obj.bits, serializer);
-    serde::Serializable<decltype(obj.sort_by)>::serialize(obj.sort_by, serializer);
-}
-
-template <>
-template <typename Deserializer>
-Circuit::Directive::PermutationSort serde::Deserializable<Circuit::Directive::PermutationSort>::deserialize(
-    Deserializer& deserializer)
-{
-    Circuit::Directive::PermutationSort obj;
-    obj.inputs = serde::Deserializable<decltype(obj.inputs)>::deserialize(deserializer);
-    obj.tuple = serde::Deserializable<decltype(obj.tuple)>::deserialize(deserializer);
-    obj.bits = serde::Deserializable<decltype(obj.bits)>::deserialize(deserializer);
-    obj.sort_by = serde::Deserializable<decltype(obj.sort_by)>::deserialize(deserializer);
-    return obj;
-}
-
-namespace Circuit {
-
 inline bool operator==(const Expression& lhs, const Expression& rhs)
 {
     if (!(lhs.mul_terms == rhs.mul_terms)) {
@@ -7509,6 +7446,61 @@ Circuit::Opcode::MemoryInit serde::Deserializable<Circuit::Opcode::MemoryInit>::
 
 namespace Circuit {
 
+inline bool operator==(const Opcode::Call& lhs, const Opcode::Call& rhs)
+{
+    if (!(lhs.id == rhs.id)) {
+        return false;
+    }
+    if (!(lhs.inputs == rhs.inputs)) {
+        return false;
+    }
+    if (!(lhs.outputs == rhs.outputs)) {
+        return false;
+    }
+    return true;
+}
+
+inline std::vector<uint8_t> Opcode::Call::bincodeSerialize() const
+{
+    auto serializer = serde::BincodeSerializer();
+    serde::Serializable<Opcode::Call>::serialize(*this, serializer);
+    return std::move(serializer).bytes();
+}
+
+inline Opcode::Call Opcode::Call::bincodeDeserialize(std::vector<uint8_t> input)
+{
+    auto deserializer = serde::BincodeDeserializer(input);
+    auto value = serde::Deserializable<Opcode::Call>::deserialize(deserializer);
+    if (deserializer.get_buffer_offset() < input.size()) {
+        throw_or_abort("Some input bytes were not read");
+    }
+    return value;
+}
+
+} // end of namespace Circuit
+
+template <>
+template <typename Serializer>
+void serde::Serializable<Circuit::Opcode::Call>::serialize(const Circuit::Opcode::Call& obj, Serializer& serializer)
+{
+    serde::Serializable<decltype(obj.id)>::serialize(obj.id, serializer);
+    serde::Serializable<decltype(obj.inputs)>::serialize(obj.inputs, serializer);
+    serde::Serializable<decltype(obj.outputs)>::serialize(obj.outputs, serializer);
+}
+
+template <>
+template <typename Deserializer>
+Circuit::Opcode::Call serde::Deserializable<Circuit::Opcode::Call>::deserialize(Deserializer& deserializer)
+{
+    Circuit::Opcode::Call obj;
+    obj.id = serde::Deserializable<decltype(obj.id)>::deserialize(deserializer);
+    obj.inputs = serde::Deserializable<decltype(obj.inputs)>::deserialize(deserializer);
+    obj.outputs = serde::Deserializable<decltype(obj.outputs)>::deserialize(deserializer);
+    return obj;
+}
+
+namespace Circuit {
+
 inline bool operator==(const OpcodeLocation& lhs, const OpcodeLocation& rhs)
 {
     if (!(lhs.value == rhs.value)) {
diff --git a/build_manifest.yml b/build_manifest.yml
index c07877468bc..10382887281 100644
--- a/build_manifest.yml
+++ b/build_manifest.yml
@@ -36,6 +36,7 @@ noir-packages-tests:
   rebuildPatterns: .rebuild_patterns_packages
   dependencies:
     - noir
+    - noir-packages
 
 # Builds the brillig to avm transpiler.
 avm-transpiler:
diff --git a/noir/Dockerfile.packages-test b/noir/Dockerfile.packages-test
index 33fac5120fb..b9b4ac32267 100644
--- a/noir/Dockerfile.packages-test
+++ b/noir/Dockerfile.packages-test
@@ -1,6 +1,9 @@
 FROM aztecprotocol/noir AS noir
+FROM --platform=linux/amd64 aztecprotocol/noir-packages as noir-packages
 
 FROM node:20 AS builder
+COPY --from=noir-packages /usr/src/noir/packages /usr/src/noir/packages
+
 COPY --from=noir /usr/src/noir/noir-repo/target/release /usr/src/noir/noir-repo/target/release
 ENV PATH=${PATH}:/usr/src/noir/noir-repo/target/release
 RUN curl https://sh.rustup.rs -sSf | bash -s -- -y
diff --git a/noir/noir-repo/acvm-repo/acir/codegen/acir.cpp b/noir/noir-repo/acvm-repo/acir/codegen/acir.cpp
index 6fdb62c5674..4c1497a1dfb 100644
--- a/noir/noir-repo/acvm-repo/acir/codegen/acir.cpp
+++ b/noir/noir-repo/acvm-repo/acir/codegen/acir.cpp
@@ -1071,7 +1071,17 @@ namespace Circuit {
             static MemoryInit bincodeDeserialize(std::vector<uint8_t>);
         };
 
-        std::variant<AssertZero, BlackBoxFuncCall, Directive, Brillig, MemoryOp, MemoryInit> value;
+        struct Call {
+            uint32_t id;
+            std::vector<Circuit::Witness> inputs;
+            std::vector<Circuit::Witness> outputs;
+
+            friend bool operator==(const Call&, const Call&);
+            std::vector<uint8_t> bincodeSerialize() const;
+            static Call bincodeDeserialize(std::vector<uint8_t>);
+        };
+
+        std::variant<AssertZero, BlackBoxFuncCall, Directive, Brillig, MemoryOp, MemoryInit, Call> value;
 
         friend bool operator==(const Opcode&, const Opcode&);
         std::vector<uint8_t> bincodeSerialize() const;
@@ -6135,6 +6145,50 @@ Circuit::Opcode::MemoryInit serde::Deserializable<Circuit::Opcode::MemoryInit>::
     return obj;
 }
 
+namespace Circuit {
+
+    inline bool operator==(const Opcode::Call &lhs, const Opcode::Call &rhs) {
+        if (!(lhs.id == rhs.id)) { return false; }
+        if (!(lhs.inputs == rhs.inputs)) { return false; }
+        if (!(lhs.outputs == rhs.outputs)) { return false; }
+        return true;
+    }
+
+    inline std::vector<uint8_t> Opcode::Call::bincodeSerialize() const {
+        auto serializer = serde::BincodeSerializer();
+        serde::Serializable<Opcode::Call>::serialize(*this, serializer);
+        return std::move(serializer).bytes();
+    }
+
+    inline Opcode::Call Opcode::Call::bincodeDeserialize(std::vector<uint8_t> input) {
+        auto deserializer = serde::BincodeDeserializer(input);
+        auto value = serde::Deserializable<Opcode::Call>::deserialize(deserializer);
+        if (deserializer.get_buffer_offset() < input.size()) {
+            throw serde::deserialization_error("Some input bytes were not read");
+        }
+        return value;
+    }
+
+} // end of namespace Circuit
+
+template <>
+template <typename Serializer>
+void serde::Serializable<Circuit::Opcode::Call>::serialize(const Circuit::Opcode::Call &obj, Serializer &serializer) {
+    serde::Serializable<decltype(obj.id)>::serialize(obj.id, serializer);
+    serde::Serializable<decltype(obj.inputs)>::serialize(obj.inputs, serializer);
+    serde::Serializable<decltype(obj.outputs)>::serialize(obj.outputs, serializer);
+}
+
+template <>
+template <typename Deserializer>
+Circuit::Opcode::Call serde::Deserializable<Circuit::Opcode::Call>::deserialize(Deserializer &deserializer) {
+    Circuit::Opcode::Call obj;
+    obj.id = serde::Deserializable<decltype(obj.id)>::deserialize(deserializer);
+    obj.inputs = serde::Deserializable<decltype(obj.inputs)>::deserialize(deserializer);
+    obj.outputs = serde::Deserializable<decltype(obj.outputs)>::deserialize(deserializer);
+    return obj;
+}
+
 namespace Circuit {
 
     inline bool operator==(const OpcodeLocation &lhs, const OpcodeLocation &rhs) {
diff --git a/noir/noir-repo/acvm-repo/acir/src/circuit/opcodes.rs b/noir/noir-repo/acvm-repo/acir/src/circuit/opcodes.rs
index f725ba8c32a..064a9d1244a 100644
--- a/noir/noir-repo/acvm-repo/acir/src/circuit/opcodes.rs
+++ b/noir/noir-repo/acvm-repo/acir/src/circuit/opcodes.rs
@@ -29,6 +29,17 @@ pub enum Opcode {
         block_id: BlockId,
         init: Vec<Witness>,
     },
+    /// Calls to functions represented as a separate circuit. A call opcode allows us
+    /// to build a call stack when executing the outer-most circuit.
+    Call {
+        /// Id for the function being called. It is the responsibility of the executor
+        /// to fetch the appropriate circuit from this id.
+        id: u32,
+        /// Inputs to the function call
+        inputs: Vec<Witness>,
+        /// Outputs of the function call
+        outputs: Vec<Witness>,
+    },
 }
 
 impl std::fmt::Display for Opcode {
@@ -86,6 +97,11 @@ impl std::fmt::Display for Opcode {
                 write!(f, "INIT ")?;
                 write!(f, "(id: {}, len: {}) ", block_id.0, init.len())
             }
+            Opcode::Call { id, inputs, outputs } => {
+                write!(f, "CALL func {}: ", id)?;
+                writeln!(f, "inputs: {:?}", inputs)?;
+                writeln!(f, "outputs: {:?}", outputs)
+            }
         }
     }
 }
diff --git a/noir/noir-repo/acvm-repo/acvm/src/compiler/transformers/mod.rs b/noir/noir-repo/acvm-repo/acvm/src/compiler/transformers/mod.rs
index 214243d9360..2e549854521 100644
--- a/noir/noir-repo/acvm-repo/acvm/src/compiler/transformers/mod.rs
+++ b/noir/noir-repo/acvm-repo/acvm/src/compiler/transformers/mod.rs
@@ -145,6 +145,7 @@ pub(super) fn transform_internal(
                 new_acir_opcode_positions.push(acir_opcode_positions[index]);
                 transformed_opcodes.push(opcode);
             }
+            Opcode::Call { .. } => todo!("Handle Call opcodes in the ACVM"),
         }
     }
 
diff --git a/noir/noir-repo/acvm-repo/acvm/src/pwg/mod.rs b/noir/noir-repo/acvm-repo/acvm/src/pwg/mod.rs
index d8323e5ef5f..0fd733a6336 100644
--- a/noir/noir-repo/acvm-repo/acvm/src/pwg/mod.rs
+++ b/noir/noir-repo/acvm-repo/acvm/src/pwg/mod.rs
@@ -281,6 +281,7 @@ impl<'a, B: BlackBoxFunctionSolver> ACVM<'a, B> {
                 Ok(Some(foreign_call)) => return self.wait_for_foreign_call(foreign_call),
                 res => res.map(|_| ()),
             },
+            Opcode::Call { .. } => todo!("Handle Call opcodes in the ACVM"),
         };
         self.handle_opcode_resolution(resolution)
     }