Hi Folks,

I'm attempting to add PostGIS to Guix - a GIS extension for PostgreSQL.
The build phase runs ok, but the install phase fails trying to write to
the postgresql package:

  /gnu/store/42d5rjrdkln6nwvzwdc8dyd4w6iy3n5j-coreutils-8.27/bin/mkdir:
  cannot create directory
  ‘/gnu/store/0haa85i5rhpxmmninqpkyn3rqax83887-postgresql-10.1/share/contrib’:
  Permission denied

That directory comes from `pg_config --sharedir`, run during configure.
I'm trying to force configure to use /share instead by patching
configure.ac as attached. The patch seems like it's being applied, as I
can see the change in
/tmp/guix-build-postgis-2.4.2.drv-7/postgis-2.4.2/configure.ac, but it
seems that the corresponding "configure" file is unchanged, so I'm
obviously missing something.

Any thoughts on this or a better approach?

Regards,
Ben

Ben Sturmfels

Sturm Software Engineering
www.sturm.com.au
(03) 9024 2467