fix package file finding

setup.py

@@ -27,7 +27,7 @@ setup(
         "Programming Language :: Python :: 3.8",
     ],
     python_requires=">=3.6",
-    packages=find_packages("src"),
+    packages=[f"robofish.{p}" for p in find_packages("src/robofish")],
     package_dir={"": "src"},
     zip_safe=True,
     entry_points=entry_points,