diff --git a/devenv.nix b/devenv.nix
index e0dea5c..10294c4 100644
--- a/devenv.nix
+++ b/devenv.nix
@@ -9,18 +9,14 @@ in
     pkgs-unstable.uv
     pkgs.commitizen
     pkgs.git
+    pkgs.just
   ];
 
   dotenv.enable = true;
 
   # https://devenv.sh/scripts/
   scripts.qfmt.exec = ''
-    echo -e "Running formatting, linting and typechecking 🧹 🔧 \n"
-
-    uv run ruff check --select I --fix
-    uv run ruff check 
-    uv run ruff format 
-    uv run mypy qnexus/ tests/ integration/
+    just qfmt
   '';
   scripts.qtest.exec = ''
     echo -e "Running unit tests  📏🔍\n"
diff --git a/integration/conftest.py b/integration/conftest.py
index 1c09591..6fdf70f 100644
--- a/integration/conftest.py
+++ b/integration/conftest.py
@@ -463,7 +463,7 @@ def test_ref_serialisation(
 
 @pytest.fixture(name="qa_hugr_package")
 def qa_hugr_package_fixture() -> Package:
-    hugr_path = Path("tests/data/example.hugr").resolve()
+    hugr_path = Path("tests/data/example_bell.hugr").resolve()
     return Package.from_bytes(hugr_path.read_bytes())
 
 
diff --git a/integration/test_qsys_jobs.py b/integration/test_qsys_jobs.py
index 4ca941d..7777800 100644
--- a/integration/test_qsys_jobs.py
+++ b/integration/test_qsys_jobs.py
@@ -1,11 +1,9 @@
 """Tests related to running jobs against QSys devices."""
 
-from typing import Any, Callable, ContextManager, cast
+from typing import Callable, ContextManager, cast
 
 import pytest
-from guppylang import guppy
-from guppylang.std.builtins import result
-from guppylang.std.quantum import cx, h, measure, qubit, x, z
+from hugr.package import Package
 from hugr.qsystem.result import QsysResult
 from pytket.backends.backendinfo import BackendInfo
 from quantinuum_schemas.models.backend_config import (
@@ -24,36 +22,6 @@
 )
 
 
-def prepare_teleportation() -> Any:
-    """Prepares the teleportation circuit."""
-
-    @guppy
-    def bell() -> tuple[qubit, qubit]:
-        """Constructs a bell state."""
-        q1, q2 = qubit(), qubit()
-        h(q1)
-        cx(q1, q2)
-        return q1, q2
-
-    @guppy
-    def main() -> None:
-        src = qubit()
-        x(src)
-        alice, bob = bell()
-
-        cx(src, alice)
-        h(src)
-        if measure(alice):
-            x(bob)
-        if measure(src):
-            z(bob)
-
-        result("teleported", measure(bob))
-
-    main.check()
-    return main.compile()
-
-
 @pytest.mark.parametrize(
     "backend_config",
     [
@@ -70,6 +38,7 @@ def test_guppy_execution(
     test_case_name: str,
     create_project: Callable[[str], ContextManager[ProjectRef]],
     backend_config: BackendConfig,
+    qa_hugr_package: Package,
 ) -> None:
     """Test the execution of a guppy program
     on a next-generation QSys device."""
@@ -78,7 +47,7 @@ def test_guppy_execution(
         n_shots = 10
 
         hugr_ref = qnx.hugr.upload(
-            hugr_package=prepare_teleportation(),
+            hugr_package=qa_hugr_package,
             name=f"hugr for {test_case_name}",
             project=project_ref,
         )
@@ -127,12 +96,13 @@ def test_guppy_execution(
 def test_hugr_costing(
     test_case_name: str,
     create_project: Callable[[str], ContextManager[ProjectRef]],
+    qa_hugr_package: Package,
 ) -> None:
     """Test the costing of a Hugr program on a cost checking device."""
 
     with create_project(f"project for {test_case_name}") as project_ref:
         hugr_ref = qnx.hugr.upload(
-            hugr_package=prepare_teleportation(),
+            hugr_package=qa_hugr_package,
             name=f"hugr for {test_case_name}",
             project=project_ref,
         )
diff --git a/justfile b/justfile
new file mode 100644
index 0000000..94f6c92
--- /dev/null
+++ b/justfile
@@ -0,0 +1,17 @@
+# List the available commands
+help:
+    @just --list --justfile {{justfile()}}
+
+# Run basic formatting, linting and typechecking
+qfmt:
+    echo -e "Running formatting, linting and typechecking 🧹 🔧 \n"
+
+    uv run ruff check --select I --fix
+    uv run ruff check 
+    uv run ruff format 
+    uv run mypy qnexus/ tests/ integration/
+
+# Re-compile test hugr files.
+recompile-test-files:
+    @echo "---- Recompiling example guppy programs ----"
+    just tests/data/recompile
\ No newline at end of file
diff --git a/pytest.ini b/pytest.ini
index 6b6d4eb..7f92fc3 100644
--- a/pytest.ini
+++ b/pytest.ini
@@ -1,4 +1,5 @@
 [pytest]
 addopts = --strict-markers -n 2 --reruns 3 --cov=qnexus --cov-report= --cov-append --doctest-modules
+norecursedirs = tests/data
 markers =
     create: marks tests as those that have side effects involving resource creation (deselect with '-m "not create"')
diff --git a/tests/data/README.md b/tests/data/README.md
new file mode 100644
index 0000000..75b1a00
--- /dev/null
+++ b/tests/data/README.md
@@ -0,0 +1,8 @@
+# Test programs
+
+This directory contains simple quantum programs used for testing.
+
+The compiled HUGR is stored (alongside the guppy python program) with a `.hugr` extension.
+
+Run `just recompile` in this directory (or `just recompile-test-files` on
+the root) to recompile the `.hugr` files.
diff --git a/tests/data/example.hugr b/tests/data/example.hugr
deleted file mode 100644
index a1a6f80..0000000
Binary files a/tests/data/example.hugr and /dev/null differ
diff --git a/tests/data/example_bell.gpy.py b/tests/data/example_bell.gpy.py
new file mode 100644
index 0000000..e0ef2d3
--- /dev/null
+++ b/tests/data/example_bell.gpy.py
@@ -0,0 +1,39 @@
+"""Simple guppylang program from https://docs.quantinuum.com/guppy"""
+
+from pathlib import Path
+from sys import argv
+
+from guppylang import guppy
+from guppylang.std.builtins import result
+from guppylang.std.quantum import cx, h, measure, qubit, x, z
+
+
+@guppy
+def bell() -> tuple[qubit, qubit]:
+    """Constructs a bell state."""
+    q1, q2 = qubit(), qubit()
+    h(q1)
+    cx(q1, q2)
+    return q1, q2
+
+
+@guppy
+def main() -> None:
+    src = qubit()
+    x(src)
+    alice, bob = bell()
+
+    cx(src, alice)
+    h(src)
+    if measure(alice):
+        x(bob)
+    if measure(src):
+        z(bob)
+
+    result("teleported", measure(bob))
+
+
+main.check()
+program = main.compile_function()
+# remove the .gpy suffix and add .hugr
+Path(argv[0]).with_suffix("").with_suffix(".hugr").write_bytes(program.to_bytes())
diff --git a/tests/data/example_bell.hugr b/tests/data/example_bell.hugr
new file mode 100644
index 0000000..89b6bb7
Binary files /dev/null and b/tests/data/example_bell.hugr differ
diff --git a/tests/data/justfile b/tests/data/justfile
new file mode 100644
index 0000000..5943812
--- /dev/null
+++ b/tests/data/justfile
@@ -0,0 +1,14 @@
+# List the available commands
+help:
+    @just --list --justfile {{justfile()}}
+
+# Re-generate all test hugr files.
+recompile: recompile-test-files
+
+# Re-generate all hugr files.
+recompile-test-files:
+    #!/usr/bin/env sh
+    for example in $(find . -type f -name "*.gpy.py"); do
+        echo "Re-generating $example"
+        uv run --no-project "$example"
+    done
\ No newline at end of file