diff --git a/pyproject.toml b/pyproject.toml
index 9e2ab7c..4dd49d1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -25,6 +25,18 @@ dev = [
     "sphinx>=7,<8",
 ]
 
+[project.optional-dependencies]
+passagemath = [
+    "passagemath-graphs",
+    "passagemath-polyhedra",
+    "passagemath-singular",
+    "passagemath-symbolics",
+    "passagemath-repl",
+]
+macaulay2 = [
+    "passagemath-macaulay2",
+]
+
 [build-system]
 requires = ["hatchling"]
 build-backend = "hatchling.build"
diff --git a/sage_acsv/settings.py b/sage_acsv/settings.py
index 3351479..3eee31e 100644
--- a/sage_acsv/settings.py
+++ b/sage_acsv/settings.py
@@ -4,8 +4,6 @@
 
 from enum import Enum
 
-from sage.interfaces.macaulay2 import Macaulay2
-
 from sage_acsv.debug import acsv_logger
 
 
@@ -100,7 +98,7 @@ class ACSVSettings:
     _default_output_format = DEFAULT_OUTPUT_FORMAT
     _default_kronecker_backend = DEFAULT_KRONECKER_BACKEND
     _default_groebner_backend = DEFAULT_GROEBNER_BACKEND
-    _m2 = Macaulay2()
+    _m2 = None
 
     MAX_MIN_CRIT_RETRIES = 5  # Maximum number of retries for critical point detection
 
@@ -212,9 +210,13 @@ def set_macaulay2_path(cls, path: str | None) -> None:
 
         * ``path`` -- a filepath string or `None` to run from anywhere
         """
+        from sage.interfaces.macaulay2 import Macaulay2
         cls._m2 = Macaulay2(command=path)
 
     @classmethod
     def get_macaulay2(cls) -> KroneckerBackend:
         """Get the Macaulay2 installation path."""
+        if cls._m2 is None:
+            from sage.interfaces.macaulay2 import Macaulay2
+            _m2 = Macaulay2()
         return cls._m2
diff --git a/tox.ini b/tox.ini
new file mode 100644
index 0000000..7bc29bf
--- /dev/null
+++ b/tox.ini
@@ -0,0 +1,17 @@
+[tox]
+envlist = passagemath
+
+[testenv:passagemath]
+usedevelop = True
+
+extras = passagemath
+
+allowlist_externals =
+    bash
+
+passenv =
+    HOME
+    GITHUB_ACTIONS
+
+commands =
+    bash -c "PYTHONPATH={toxinidir} sage -t -p --force-lib $([ -n \"$GITHUB_ACTIONS\" ] && echo \"--format github\") --environment=sage.all__sagemath_symbolics --optional=sage sage_acsv/"