Package lwgeom (0.2-4) fails to install on Shinyapps.io with an "upgrade GEOS to 3.6.0 or later" error

R package lwgeom had to upgrade to a newer version of liblwgeom (now a
subdirectory in the PostGIS source tree, really) because of the new PROJ
versions and deprecation of the old PROJ interface; PostGIS requires the
newer GEOS version.

I have no control over versions of GEOS that are run on the shinyapps.io
machines, and don't know which OS at which version they run. I also have
no clue how one could debug this issue.

One could try to patch the install file,
https://github.com/rstudio/shinyapps-package-dependencies/blob/master/packages/lwgeom/install
such that it installs a newer GEOS (maybe binary from another ppa,
otherwise from source).

On Wed, 3 Jun 2020, Erin Hodgess wrote:

Could this possibly be due to the upgrade for GDAL and PROJ libraries,
please?

Erin,

I learned a while ago that when any of proj, geos, and gdal are upgraded I
need to rebuid tools higher in that chain. If you have a new geos version
then a new gdal build is in order.

If this does not address your issue please excuse my responding.

Regards,

Rich

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Edzer Pebesma
Institute for Geoinformatics
Heisenbergstrasse 2, 48149 Muenster, Germany
Phone: +49 251 8333081

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