diff --git a/MANIFEST.in b/MANIFEST.in
new file mode 100644
index 0000000..8c8260d
--- /dev/null
+++ b/MANIFEST.in
@@ -0,0 +1 @@
+include tatooinemesher/data/*.xml
diff --git a/setup.py b/setup.py
index c7de03e..cfddb51 100644
--- a/setup.py
+++ b/setup.py
@@ -23,6 +23,7 @@
     author="Luc Duron",
     author_email="l.duron@cnr.tm.fr",
     packages=find_packages(exclude=EXCLUDE_FROM_PACKAGES),
+    include_package_data=True,  # see data files in `MANIFEST.in`
     scripts=cli_files,
     install_requires=requirements,
     description="Channel mesher and interpolator from 1D cross-sections and constraint lines",
diff --git a/tatooinemesher/interp/__init__.py b/tatooinemesher/interp/__init__.py
new file mode 100644
index 0000000..e69de29