grass-dev - 7.8.5-1+deb11u1 main

Commonly referred to as GRASS, this is a Geographic Information
System (GIS) used for geospatial data management and analysis,
image processing, graphics/map production, spatial modeling, and
visualization. GRASS is currently used in academic and commercial
settings around the world, as well as by many government agencies
and environmental consulting companies.
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This package contains the header files for developing with GRASS.
Install this package if you wish to develop software that manipulates
GRASS data sets or install addons using the g.extension module.