[postgis-devel] Proposal: drop support for libproj < 6.1 in PostGIS 3.3.0

[Regina Obe]

Your subject lines says  < 6.1 but you say < 7.1
Which one is it?

I'm okay with dropping < 6.1 but not so much with < 7

> -----Original Message-----
> From: postgis-devel [mailto:postgis-devel-bounces at lists.osgeo.org] On
> Behalf Of Sandro Santilli
> Sent: Friday, February 11, 2022 6:00 PM
> To: postgis-devel at lists.osgeo.org
> Subject: [postgis-devel] Proposal: drop support for libproj < 6.1 in
PostGIS
> 3.3.0
> 
> It's weird that it is me proposing this, but Debian stable (11) ships
libproj 7.1
> and so I've no problem accepting that we drop support for libproj < 7 for
> PostGIS 3.3.0
> 
> PROs:
>   - we could query the proj db for spatial_ref_sys entries
>     ( https://trac.osgeo.org/postgis/ticket/5094 )
>     and stop shipping spatial_ref_sys.sql all togheter
>     (as suggested by Raul)
>   - we could drop a few #idefs
> 
> CONs:
>   - people running in production older proj won't be able
>     to upgrade ONLY postgis w/out upgrading libproj
>     (meh)
> 
> Thanks Regina we now have libproj support matrix written
> here: https://trac.osgeo.org/postgis/wiki/UsersWikiPostgreSQLPostGIS
> The table puts proj 6.0-6.3 togheter, not sure why, our code seems to want
> 6.1+ for some specific things.
> 
> --strk;
> 
>   Libre GIS consultant/developer
>   https://strk.kbt.io/services.html
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