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Installing GRASS GIS extensions currently failing on some systems

Due to a long-term planned re-structuring of the addon repository, the installation of addons through g.extension is currently not working on UNIX-like systems. Installation of addons with the current stable version GRASS GIS 7.8.5 on OSGeo4W (Version 1) is not affected.

All the necessary changes in g.extension have been implemented, merged and back-ported. The functionality will be back to normal very soon with the upcoming GRASS 7.8.6 and 8.0.0 releases.

In the meantime, you have two options:

  1. Compile and install addons manually after fetching the addon source code from github.
  2. Compile and install GRASS GIS from source, either releasebranch_7_8 or master, where g.extension changes have been applied.

For the case of python addons, just download and run them as regular python scripts.

Thanks for your patience!