This is a big package (~700MB compressed), that on my system is pulled in through a chain of sci-electronics/kicad -> sci-libs/opencascade -> sci-libs/vtk -> sci-libs/proj. I'm not entirely sure what functionality of any of this chain uses this package, and I'm similarly confused as to what the data files even are, as I'm completely out of my depth with this one. But I've noticed a few things: - The Arch Linux package ships with no data - The README notes the following: As an alternative to installing the data package on the local system, the resource files can be retrieved on-the-fly from the PROJ CDN. A network-enabled PROJ build, will automatically fetch resource files that are not present locally from the CDN. - Removing the data in question, even with USE=-curl, doesn't seem to break KiCAD's 3D viewer at first glance. What are these big files used for? What kind of program misbehavior can I expect if they're missing? Would it be possible to have a USE flag to avoid installing them, even if it means requiring USE=curl to make sure the functionality isn't missing?
(In reply to Esteve Varela Colominas from comment #0) > through a chain of sci-electronics/kicad -> sci-libs/opencascade -> > sci-libs/vtk -> sci-libs/proj. I can't find any ebuild in the tree that used sci-libs/opencascade[vtk] so maybe a simple USE flag change there? media-gfx/freecad-1.0 does need sci-libs/vtk; if mesh support isn't required that won't be needed in 1.1 (or already in 9999)
Oh, you're right, I was reporting on kicad, but it's freecad that used to depend on opencascade[vtk] (causing me to enable the flag), now it just depends on vtk directly. Since I removed freecad recently, I suppose I don't directly need vtk or proj right now. That said, does freecad need the huge data files for its mesh support?
I can't find any evidence that salomesmesh uses proj. My first idea would be to add a proj USE flag to sci-libs/vtk: https://github.com/gentoo/gentoo/pull/40889
Thanks for checking! This helps a lot, I can't think of anything else that I need sci-libs/vtk for right now, and for the ebuilds I'm seeing where proj is used directly, the use of the data files is more clearly obvious (they're mapping tools). I'll consider this ticket solved if that is merged.
