require obspy

setup.py

@@ -125,7 +125,7 @@ class CustomInstallCommand(install):
     # your project is installed. For an analysis of "install_requires" vs pip's
     # requirements files see:
     # https://packaging.python.org/en/latest/requirements.html
-    install_requires=[],
+    install_requires=['obspy'],
 
     # If there are data files included in your packages that need to be
     # installed, specify them here.  If using Python 2.6 or less, then these