[QGIS-Developer] LTR management [was Re: Delaying 3.10.1?]

[Even Rouault]

> I think the issues are deeper then the crashes/projection failures
> fixed by the GDAL/proj cherry-picked commits.

Yes, actually QGIS 3.4 should not be affected by the PROJ fix, because it  
uses the old pj_transform() API with doesn't trigger that code path at all. 
But it *is* affected by exportToProj4() no longer returning +datum or +towgs84 
in cases where it used to be, which basically makes working with anything != 
WGS 84 fundamentaly broken. The only "fix" would be to backport the fully 
fledged PROJ 6 support of 3.10 which is obviously unreasonable to do in 3.4

> think we SHOULD drop
> Windows LTR support early rather than releasing a 3.4 build based on
> proj6/gdal3.

+1

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