Re: [pgsql-pkg-yum] postgis24_* package

On Sun, Oct 08, 2017 at 05:52:29PM -0500, Justin Pryzby wrote:
> Just curious how the postgis package upgrades are intended to work ?  It seems
...
> Further, how do I actually install postgis24_96 ?  Do I actually have to run
> "rpm -e postgis23_96" first ?  Or is some particular yum incanatation intended

I've upgraded nearly all our customers to postgis24_96.  For most this has, at
worst, first required rpm -e postgis2_96.  Here's one, final, issue with our
otherwise up-to-date customers:

[pryzbyj@TELSASOFT01 ~]$ sudo yum install postgis24_96
...
Installing: postgis24_96
x86_64                                                   2.4.0-1.rhel6
pgdg96                                                   9.3 M
Transaction Check Error: file /usr/pgsql-9.6/lib/liblwgeom.so from install of postgis24_96-2.4.0-1.rhel6.x86_64
conflictswith file from package postgis22_96-2.2.5-1.rhel6.x86_64 file
/usr/pgsql-9.6/share/extension/address_standardizer.controlfrom install of postgis24_96-2.4.0-1.rhel6.x86_64 conflicts
withfile from package postgis22_96-2.2.5-1.rhel6.x86_64
 
[...]

[pryzbyj@TELSASOFT01 ~]$ sudo rpm -e postgis22_96
error: Failed dependencies:       postgis is needed by (installed) python-mapscript-5.0.2-3.x86_64

So I ended up having to remove multiple packages in order to upgrade:
[pryzbyj@TELSASOFT01 ~]$ sudo rpm -e python-mapscript.x86_64 postgis22_96-2.2.5-1.rhel6.x86_64

I think postgis24_96 should conflict postgis23_96 (et al) and postgis24_96
should have a redhat equivalent of what in debian's package metadata would be
expressed as Conflicts+Replaces: postgis2_96, forcing removal of postgis2_96.
And optionally Provides: postgis2_96, if it's intended to allow other packages
to "Depend: postgis2_96" for postgis2 rather than enumerating supported version
(Depends: postgis24_96|postgis23_96|postgis22_96).

Justin


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