[postgis-tickets] [PostGIS] #5276: make installcheck-upgrade-byfunc fail in 3.1 branch

[PostGIS]

#5276: make installcheck-upgrade-byfunc fail in 3.1 branch
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  Reporter:  strk     |      Owner:  pramsey
      Type:  defect   |     Status:  new
  Priority:  blocker  |  Milestone:  PostGIS 3.1.8
 Component:  postgis  |    Version:  3.1.x
Resolution:           |   Keywords:
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Comment (by strk):

 The `installcheck-by-func` is basically an upgrade test, upgrading from
 unpackaged self

 Debug effort here: https://git.osgeo.org/gitea/postgis/postgis/pulls/110
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Ticket URL: <https://trac.osgeo.org/postgis/ticket/5276#comment:2>
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