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@@ -25,6 +25,13 @@ software project.
 
 ### Guix package generation
 
+The [packaging][3] library is used to handle requirements (what Guix would
+consider an input). The dependency of every package in the build graph is
+decided by the [libsolv][4] dependency solver.
+
+[3]: https://github.com/pypa/packaging
+[4]: https://github.com/openSUSE/libsolv
+
 A Guix package is a function of the following:
 
  - A sdist store