[GRASS-user] error in g.proj on Windows 10 via R (rgrass7) in GRASS 7.8

[Helmut Kudrnovsky]

>The problem occurs using GRASS 7.8 but NOT using 7.6. Likewise, there is
>no problem under Linux, only Windows 10.
>
>It might be related to some Windows environmental variables, but I don't
>have a clue which ones. As the older version works, I wonder if it is
>due to any changes from GRASS 7.6 to 7.8. Could anybody give me a hint?

QGIS bundled GRASS here:

GRASS Version: 7.8.5
Code revision: 2b6ab2893
Build date: 2020-12-21
Build platform: x86_64-w64-mingw32
GDAL: 3.1.4
PROJ: 6.3.2

see https://github.com/rsbivand/rgrass7/issues/27

it may be a mismatch between the GRASS bundled proj version and the R spatial packages bundled proj version.

please check the proj version in GRASS and R.

kind regards
Helmut