add supautils smoke test

ext/supautils.nix

@@ -0,0 +1,29 @@
+{ lib, stdenv, fetchFromGitHub, postgresql }:
+
+stdenv.mkDerivation rec {
+  pname = "supautils";
+  version = "1.7.3";
+
+  buildInputs = [ postgresql ];
+
+  src = fetchFromGitHub {
+    owner  = "supabase";
+    repo   = pname;
+    rev    = "refs/tags/v${version}";
+    hash   = "sha256-bkuqF83XRIOl7CuKOh16G7QekPSmt1EdoG0c1W0xFKY=";
+  };
+
+  installPhase = ''
+    mkdir -p $out/lib
+
+    install -D supautils.so -t $out/lib
+  '';
+
+  meta = with lib; {
+    description = "PostgreSQL extension for enhanced security";
+    homepage    = "https://github.com/supabase/${pname}";
+    maintainers = with maintainers; [ steve-chavez ];
+    platforms   = postgresql.meta.platforms;
+    license     = licenses.postgresql;
+  };
+}

flake.nix

@@ -63,12 +63,13 @@
           ./ext/hypopg.nix
           ./ext/pg_tle.nix
           ./ext/wrappers/default.nix
+          ./ext/supautils.nix
         ];
 
         makePostgresPkgs = version:
           let postgresql = pkgs."postgresql_${version}";
           in map (path: pkgs.callPackage path { inherit postgresql; }) ourExtensions;
-        
+
         makePostgresPkgsSet = version:
           (builtins.listToAttrs (map (drv:
             { name = drv.pname; value = drv; }

tests/smoke/0002-supautils.sql

@@ -0,0 +1,17 @@
+BEGIN;
+SELECT plan(2);
+
+-- the setting doesn't exist when supautils is not loaded
+SELECT throws_ok($$
+  select current_setting('supautils.privileged_extensions', false)
+$$);
+
+LOAD 'supautils';
+
+-- now it does
+SELECT ok(
+  current_setting('supautils.privileged_extensions', false) = ''
+);
+
+SELECT * FROM finish();
+ROLLBACK;