postgis: depend on postgresql@14.

Formula/postgis.rb

@@ -4,6 +4,7 @@ class Postgis < Formula
   url "https://download.osgeo.org/postgis/source/postgis-3.2.3.tar.gz"
   sha256 "1b4d8b5c756e5aba59efbc1833b22efe4d6562778eeca56fa497feb2eb13668c"
   license "GPL-2.0-or-later"
+  revision 1
 
   livecheck do
     url "https://download.osgeo.org/postgis/source/"
@@ -33,7 +34,7 @@ class Postgis < Formula
   depends_on "geos"
   depends_on "json-c" # for GeoJSON and raster handling
   depends_on "pcre2"
-  depends_on "postgresql"
+  depends_on "postgresql@14"
   depends_on "proj"
   depends_on "protobuf-c" # for MVT (map vector tiles) support
   depends_on "sfcgal" # for advanced 2D/3D functions
@@ -44,13 +45,19 @@ class Postgis < Formula
 
   fails_with gcc: "5"
 
+  def postgresql
+    Formula["postgresql@14"]
+  end
+
   def install
     ENV.deparallelize
 
+    ENV["PG_CONFIG"] = postgresql.opt_bin/"pg_config"
+
     args = [
       "--with-projdir=#{Formula["proj"].opt_prefix}",
       "--with-jsondir=#{Formula["json-c"].opt_prefix}",
-      "--with-pgconfig=#{Formula["postgresql"].opt_bin}/pg_config",
+      "--with-pgconfig=#{postgresql.opt_bin}/pg_config",
       "--with-protobufdir=#{Formula["protobuf-c"].opt_bin}",
       # Unfortunately, NLS support causes all kinds of headaches because
       # PostGIS gets all of its compiler flags from the PGXS makefiles. This
@@ -72,7 +79,7 @@ def install
     # the version of postgresql used to build postgis.  Since we copy these
     # files into the postgis keg and symlink them to HOMEBREW_PREFIX, postgis
     # only needs to be rebuilt when there is a new major version of postgresql.
-    postgresql_prefix = Formula["postgresql"].prefix.realpath
+    postgresql_prefix = postgresql.prefix.realpath
     postgresql_stage_path = File.join("stage", postgresql_prefix)
     bin.install (buildpath/postgresql_stage_path/"bin").children
     doc.install (buildpath/postgresql_stage_path/"share/doc").children
@@ -95,10 +102,10 @@ def install
   end
 
   test do
-    pg_version = Formula["postgresql"].version.major
+    pg_version = postgresql.version.major
     expected = /'PostGIS built for PostgreSQL % cannot be loaded in PostgreSQL %',\s+#{pg_version}\.\d,/
     postgis_version = Formula["postgis"].version.major_minor
-    assert_match expected, (share/"postgresql/contrib/postgis-#{postgis_version}/postgis.sql").read
+    assert_match expected, (share/postgresql.name/"contrib/postgis-#{postgis_version}/postgis.sql").read
 
     require "base64"
     (testpath/"brew.shp").write ::Base64.decode64 <<~EOS
@@ -135,5 +142,19 @@ def install
     result = shell_output("#{bin}/shp2pgsql #{testpath}/brew.shp")
     assert_match "Point", result
     assert_match "AddGeometryColumn", result
+
+    pg_ctl = postgresql.opt_bin/"pg_ctl"
+    psql = postgresql.opt_bin/"psql"
+    port = free_port
+
+    system pg_ctl, "initdb", "-D", testpath/"test"
+    (testpath/"test/postgresql.conf").write <<~EOS, mode: "a+"
+
+      shared_preload_libraries = 'postgis-3'
+      port = #{port}
+    EOS
+    system pg_ctl, "start", "-D", testpath/"test", "-l", testpath/"log"
+    system psql, "-p", port.to_s, "-c", "CREATE EXTENSION \"postgis\";", "postgres"
+    system pg_ctl, "stop", "-D", testpath/"test"
   end
 end