Feature request #3204
GRASS toolbox: let force an optional flag required
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It would be nice to be able to enforce an optional parameter in qgm as obligatory - sth like a "require=yes" atribute.
Case: r.cost supports various input types - x,y coords, vector map, raster map. According to GRASS toolbox convention, I guess it should be divided into 3 seperate ones qgms: r.cost.coord, r.cost.vect, r.cost.rast. Although in each case the respective input starting points method should be required, there is no way to specify this in a qgm currently.
#3203 is related - maybe to workaround that bug add support for sth like "require=no" BTW?