[MacPorts] #61188: Current version of py38-cartopy in macports incompatible with current version of py38-matplotlib

[MacPorts]

#61188: Current version of py38-cartopy in macports incompatible with current
version of py38-matplotlib
-------------------------+--------------------------
 Reporter:  AgilentGCMS  |      Owner:  (none)
     Type:  defect       |     Status:  new
 Priority:  Normal       |  Milestone:
Component:  ports        |    Version:  2.6.3
 Keywords:               |       Port:  py38-cartopy
-------------------------+--------------------------
 The current version of `py38-cartopy` in macports is `0.17.0`, which is
 incompatible with the current version of `py38-matplotlib` in macports,
 `3.3.0_1`. See e.g.[https://github.com/SciTools/cartopy/issues/1615 this
 ticket]. It seems like macports' matplotlib got updated while cartopy did
 not, and as a result `port upgrade outdated` broke cartopy. Now trying to
 plot a `pcolormesh` on a map produces the error `TypeError: _pcolorargs()
 got an unexpected keyword argument 'allmatch'`, as reported
 [https://stackoverflow.com/questions/63170989/typeerror-when-using-
 cartopy-to-plot-xarray-pcolormesh here]. Please update `py38-cartopy` in
 the macports tree to `0.18`.

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Ticket URL: <https://trac.macports.org/ticket/61188>
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