pkg -l | grep grass
ii  grass                                                7.0.1-2build1                              all          Geographic Resources Analysis Support System (GRASS GIS)
ii  grass-core                                           7.0.1-2build1                              amd64        GRASS GIS core components
ii  grass-dev                                            7.0.1-2build1                              amd64        GRASS GIS development files
ii  grass-doc                                            7.0.1-2build1                              all          GRASS GIS user documentation
ii  grass-gui