[postgis-tickets] [PostGIS] #2382: Can't upgrade postgis ERROR: attempt to redefine parameter "postgis.backend"

[PostGIS]

#2382: Can't upgrade postgis ERROR: attempt to redefine parameter
"postgis.backend"
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  Reporter:  robe                   |       Owner:  pramsey      
      Type:  defect                 |      Status:  reopened     
  Priority:  blocker                |   Milestone:  PostGIS 2.2.0
 Component:  build/upgrade/install  |     Version:  trunk        
Resolution:                         |    Keywords:               
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Comment(by vmo):

 Thanks for the 'Remember', I'm able to reproduce now.

 The fix in r12350 don't actually fix this, but prevents the loading of
 sfcgal backend. I think r12350 is responsible for some of the diff in
 #2755: some output (e.g. ST_Distance(geom, empty)) comes from geos
 functions that are not properly replaced by sfcgal ones.

 The result from your test is apparently the same with/without r12350

     svn merge -r 12350:12349 .

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Ticket URL: <http://trac.osgeo.org/postgis/ticket/2382#comment:32>
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