diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index ca867087d..d02b5fa79 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -38,6 +38,7 @@ jobs:
           sudo apt-get install docker-ce docker-ce-cli containerd.io docker-compose-plugin
 
           sudo apt-get install \
+            binutils-aarch64-linux-gnu \
             binutils-mips-linux-gnu \
             binutils-powerpc-linux-gnu \
             dos2unix \
diff --git a/backend/compilers/download.py b/backend/compilers/download.py
index d82899d76..ebd946e4f 100755
--- a/backend/compilers/download.py
+++ b/backend/compilers/download.py
@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 import argparse
 import os
 import platform
@@ -539,6 +540,8 @@ def download_wii_gc():
 
             set_x(compiler_dir / "mwcceppc.exe")
 
+            (compiler_dir / "license.dat").touch()
+
         shutil.rmtree(COMPILERS_DIR / group_id)
 
     # copy in clean 1.2.5 for frank
diff --git a/backend/coreapp/diff_wrapper.py b/backend/coreapp/diff_wrapper.py
index 18ad2791d..b363a1c7a 100644
--- a/backend/coreapp/diff_wrapper.py
+++ b/backend/coreapp/diff_wrapper.py
@@ -209,7 +209,7 @@ def diff(
 
         if platform == DUMMY:
             # Todo produce diff for dummy
-            return {}
+            return {"rows": ["a", "b"]}
 
         try:
             arch = asm_differ.get_arch(platform.arch or "")
diff --git a/backend/coreapp/tests.py b/backend/coreapp/tests.py
index 1963869cf..9d90cc7e3 100644
--- a/backend/coreapp/tests.py
+++ b/backend/coreapp/tests.py
@@ -1,8 +1,9 @@
 import tempfile
 from time import sleep
 from typing import Any, Callable, Dict, Optional
-from unittest import skip, skipIf, skipUnless
+from unittest import skip, skipIf
 from unittest.mock import Mock, patch
+from parameterized import parameterized
 
 import responses
 from django.contrib.auth.models import User
@@ -15,9 +16,6 @@
 
 from coreapp.compiler_wrapper import CompilerWrapper
 from coreapp.compilers import (
-    GCC272SN,
-    MWCC_20_72,
-    MWCC_20_79,
     Compiler,
     GCC281,
     IDO53,
@@ -26,14 +24,15 @@
     MWCPPC_24,
     PBX_GCC3,
 )
+from coreapp.diff_wrapper import DiffWrapper
 from coreapp.m2c_wrapper import M2CWrapper
 from coreapp.platforms import N64, NDS_ARM9, PS1
-from coreapp.views.scratch import compile_scratch_update_score
+from coreapp.views.scratch import compile_scratch_update_score, diff_compilation
 from .models.github import GitHubRepo, GitHubUser
 
 from .models.profile import Profile
 from .models.project import Project, ProjectFunction, ProjectImportConfig, ProjectMember
-from .models.scratch import CompilerConfig, Scratch
+from .models.scratch import Assembly, CompilerConfig, Scratch
 
 
 def requiresCompiler(*compilers: Compiler) -> Callable[..., Any]:
@@ -523,27 +522,35 @@ def test_dummy_compiler(self) -> None:
             len(result.elf_object), 0, "The compilation result should be non-null"
         )
 
-    def test_all_compilers(self) -> None:
-        """
-        Ensure that we can run a simple compilation for all available compilers
-        """
-        for compiler in compilers.available_compilers():
-            # TODO get these working
-            if compiler in [GCC272SN]:
-                continue
-            if compiler.platform in [NDS_ARM9, PS1]:
-                continue
-
-            result = CompilerWrapper.compile_code(
-                compiler,
-                "",
-                "int func(void) { return 5; }",
-                "",
-                "func",
-            )
-            self.assertGreater(
-                len(result.elf_object), 0, "The compilation result should be non-null"
-            )
+    @parameterized.expand(input=[(c,) for c in compilers.available_compilers()])  # type: ignore
+    def test_all_compilers(self, compiler: Compiler) -> None:
+        """
+        Ensure that we can run a simple compilation/diff for all available compilers
+        """
+        result = CompilerWrapper.compile_code(
+            compiler,
+            "",
+            "int func(void) { return 5; }",
+            "",
+            "func",
+        )
+        self.assertGreater(
+            len(result.elf_object),
+            0,
+            "The compilation result should be non-null",
+        )
+
+        diff = DiffWrapper.diff(
+            Assembly(elf_object=result.elf_object),
+            compiler.platform,
+            "",
+            result.elf_object,
+            allow_target_only=True,
+            diff_flags=[],
+        )
+
+        self.assertTrue("rows" in diff)
+        self.assertGreater(len(diff["rows"]), 0)
 
 
 class DecompilationTests(BaseTestCase):
diff --git a/backend/poetry.lock b/backend/poetry.lock
index 2c2f2767f..6d6f41f84 100644
--- a/backend/poetry.lock
+++ b/backend/poetry.lock
@@ -394,6 +394,17 @@ category = "main"
 optional = false
 python-versions = "*"
 
+[[package]]
+name = "parameterized"
+version = "0.8.1"
+description = "Parameterized testing with any Python test framework"
+category = "dev"
+optional = false
+python-versions = "*"
+
+[package.extras]
+dev = ["jinja2"]
+
 [[package]]
 name = "pathspec"
 version = "0.9.0"
@@ -724,7 +735,7 @@ python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,>=2.7"
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.9"
-content-hash = "5f87333ceabea279ed6886b3d8bda7f4d3526789a83625a31cb49abe70dbb179"
+content-hash = "220d633168ddbfd6bb9ea8ddec948934b4bd9a483afb9a2b8ade32fc784ce0e4"
 
 [metadata.files]
 ansiwrap = [
@@ -981,6 +992,7 @@ mypy-extensions = [
     {file = "mypy_extensions-0.4.3-py2.py3-none-any.whl", hash = "sha256:090fedd75945a69ae91ce1303b5824f428daf5a028d2f6ab8a299250a846f15d"},
     {file = "mypy_extensions-0.4.3.tar.gz", hash = "sha256:2d82818f5bb3e369420cb3c4060a7970edba416647068eb4c5343488a6c604a8"},
 ]
+parameterized = []
 pathspec = [
     {file = "pathspec-0.9.0-py2.py3-none-any.whl", hash = "sha256:7d15c4ddb0b5c802d161efc417ec1a2558ea2653c2e8ad9c19098201dc1c993a"},
     {file = "pathspec-0.9.0.tar.gz", hash = "sha256:e564499435a2673d586f6b2130bb5b95f04a3ba06f81b8f895b651a3c76aabb1"},
diff --git a/backend/pyproject.toml b/backend/pyproject.toml
index 6a1dba33c..e1fe3f037 100644
--- a/backend/pyproject.toml
+++ b/backend/pyproject.toml
@@ -34,6 +34,7 @@ django-stubs-ext = "^0.4.0"
 django-stubs = "1.9.0"
 djangorestframework-stubs = "^1.4.0"
 types-requests = "^2.27.15"
+parameterized = "^0.8.1"
 
 [build-system]
 requires = ["poetry-core>=1.0.0"]