diff --git a/eris/tools.py b/eris/tools.py
index 16c6c45..0d85b82 100755
--- a/eris/tools.py
+++ b/eris/tools.py
@@ -680,6 +680,9 @@ def splitext(path):
 
 @functools.lru_cache()
 def is_tool_available(tool):
+    if (hasattr(tool, "command") and
+        tool.command.startswith(f"{PYTHON_EXECUTABLE} -m ")):
+        return importlib.util.find_spec(tool.command.split()[2]) is not None
     try:
         return all(shutil.which(executable) for executable in tool.executables)
     except AttributeError: