This package is not currently in any snapshots. If you're interested in using it, we recommend adding it to Stackage Nightly. Doing so will make builds more reliable, and allow stackage.org to host generated Haddocks.
Planar graphs are graphs that can be embedded onto a surface
(i.e. they can be drawn on that surface without any edges crossing).
As such, it is preferable to use a dedicated data structure for them
that has information about how to achieve this embedding rather than a
standard graph data structure.
(Please note however that this implementation has only been tested in
terms of the embedding being on the unit sphere or disc; whether it
works or not as-is on any other type of surface is unknown.)
