installation.md

@@ -22,3 +22,11 @@ Installation from source requires to build a jar of the Orekit library including
 The git repository for orekit is located at:
 
     https://gitlab.orekit.org/orekit-labs/python-wrapper.git
+
+The modified orekit source code with the python additions are available at:
+
+    
+The orekit conda package is automatically built and can be of interest if needed to compile it manually:
+   
+    https://github.com/conda-forge/orekit-feedstock
+