libspatialite: Update for proj@6 (#16173)

* libspatialite

* flake8

* Added proper version constrain

* Update var/spack/repos/builtin/packages/libspatialite/package.py

Co-Authored-By: Adam J. Stewart <ajstewart426@gmail.com>

* Update var/spack/repos/builtin/packages/libspatialite/package.py

Co-authored-by: Adam J. Stewart <ajstewart426@gmail.com>

Co-authored-by: Elizabeth Fischer <elizabeth.fischer@alaska.edu>
Co-authored-by: Adam J. Stewart <ajstewart426@gmail.com>

var/spack/repos/builtin/packages/libspatialite/package.py

@@ -3,6 +3,7 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
+import os
 from spack import *
 
 
@@ -13,12 +14,25 @@ class Libspatialite(AutotoolsPackage):
     homepage = "http://www.gaia-gis.it"
     url      = "http://www.gaia-gis.it/gaia-sins/libspatialite-sources/libspatialite-4.3.0a.tar.gz"
 
-    version('4.3.0a', sha256='88900030a4762904a7880273f292e5e8ca6b15b7c6c3fb88ffa9e67ee8a5a499')
+    # Must download manually from:
+    #     https://www.gaia-gis.it/fossil/libspatialite/info/c7f67038bf06d98d
+    # For instructions on the file:// below..
+    #     https://github.com/spack/spack/issues/2489
+    version('5.0.0.2.c7f67038bf',
+        sha256='f8100f71b769c7db066c6f938af6b00e920e4b90ac14c00a4f3ed7171565caab',
+        url="file://%s/SpatiaLite-c7f67038bf.tar.gz" % os.getcwd())
+
+    version('5.0.0-beta0', sha256='caacf5378a5cfab9b8e98bb361e2b592e714e21f5c152b795df80d0ab1da1c42')
+    version('4.3.0a', preferred=True,
+            sha256='88900030a4762904a7880273f292e5e8ca6b15b7c6c3fb88ffa9e67ee8a5a499')
     version('3.0.1', sha256='4983d6584069fd5ff0cfcccccee1015088dab2db177c0dc7050ce8306b68f8e6')
 
     depends_on('pkgconfig', type='build')
     depends_on('sqlite+rtree')
-    depends_on('proj@:5')
+    depends_on('proj@:5', when='@:4.999.999')
+    # PROJ.6 is OK w/ newer versions
+    # https://www.gaia-gis.it/fossil/libspatialite/wiki?name=PROJ.6
+    depends_on('proj')
     depends_on('geos')
     depends_on('freexl')
     depends_on('iconv')