diff --git a/nix/ext/tests/default.nix b/nix/ext/tests/default.nix
index facd250f6..93759b39a 100644
--- a/nix/ext/tests/default.nix
+++ b/nix/ext/tests/default.nix
@@ -10,6 +10,10 @@ let
     let
       pname = extension_name;
       inherit (pkgs) lib;
+
+      support_upgrade = if pname == "pg_repack" then false else true;
+      run_pg_regress = if pname == "pg_repack" then false else true;
+
       installedExtension =
         postgresMajorVersion: self.packages.${pkgs.system}."psql_${postgresMajorVersion}/exts/${pname}-all";
       versions = postgresqlMajorVersion: (installedExtension postgresqlMajorVersion).versions;
@@ -148,7 +152,7 @@ let
           extension_name = "${pname}"
           pg17_configuration = "${pg17-configuration}"
           ext_has_background_worker = ${
-            if (installedExtension "15") ? hasBackgroundWorker then "True" else "False"
+            if support_upgrade && (installedExtension "15") ? hasBackgroundWorker then "True" else "False"
           }
           sql_test_directory = Path("${../../tests}")
           pg_regress_test_name = "${(installedExtension "15").pgRegressTestName or pname}"
@@ -160,24 +164,40 @@ let
           server.wait_for_unit("multi-user.target")
           server.wait_for_unit("postgresql.service")
 
-          test = PostgresExtensionTest(server, extension_name, versions, sql_test_directory)
+          test = PostgresExtensionTest(server, extension_name, versions, sql_test_directory, ${
+            if support_upgrade then "True" else "False"
+          })
 
           with subtest("Check upgrade path with postgresql 15"):
             test.check_upgrade_path("15")
 
-          with subtest("Check pg_regress with postgresql 15 after extension upgrade"):
-            test.check_pg_regress(Path("${psql_15}/lib/pgxs/src/test/regress/pg_regress"), "15", pg_regress_test_name)
+          ${
+            if run_pg_regress then
+              ''
+                with subtest("Check pg_regress with postgresql 15 after extension upgrade"):
+                  test.check_pg_regress(Path("${psql_15}/lib/pgxs/src/test/regress/pg_regress"), "15", pg_regress_test_name)
+              ''
+            else
+              ""
+          }
 
           last_version = None
           with subtest("Check the install of the last version of the extension"):
             last_version = test.check_install_last_version("15")
 
-          if ext_has_background_worker:
-            with subtest("Test switch_${pname}_version"):
-              test.check_switch_extension_with_background_worker(Path("${psql_15}/lib/${pname}.so"), "15")
+          ${
+            if support_upgrade then
+              ''
+                if ext_has_background_worker:
+                  with subtest("Test switch_${pname}_version"):
+                    test.check_switch_extension_with_background_worker(Path("${psql_15}/lib/${pname}.so"), "15")
 
-          with subtest("Check pg_regress with postgresql 15 after installing the last version"):
-            test.check_pg_regress(Path("${psql_15}/lib/pgxs/src/test/regress/pg_regress"), "15", pg_regress_test_name)
+                  with subtest("Check pg_regress with postgresql 15 after installing the last version"):
+                    test.check_pg_regress(Path("${psql_15}/lib/pgxs/src/test/regress/pg_regress"), "15", pg_regress_test_name)
+              ''
+            else
+              ""
+          }
 
           with subtest("switch to postgresql 17"):
             server.succeed(
@@ -190,14 +210,21 @@ let
           with subtest("Check upgrade path with postgresql 17"):
             test.check_upgrade_path("17")
 
-          with subtest("Check pg_regress with postgresql 17 after extension upgrade"):
-            test.check_pg_regress(Path("${psql_17}/lib/pgxs/src/test/regress/pg_regress"), "17", pg_regress_test_name)
+          ${
+            if run_pg_regress then
+              ''
+                with subtest("Check pg_regress with postgresql 17 after extension upgrade"):
+                  test.check_pg_regress(Path("${psql_17}/lib/pgxs/src/test/regress/pg_regress"), "17", pg_regress_test_name)
 
-          with subtest("Check the install of the last version of the extension"):
-            test.check_install_last_version("17")
+                with subtest("Check the install of the last version of the extension"):
+                  test.check_install_last_version("17")
 
-          with subtest("Check pg_regress with postgresql 17 after installing the last version"):
-            test.check_pg_regress(Path("${psql_17}/lib/pgxs/src/test/regress/pg_regress"), "17", pg_regress_test_name)
+                with subtest("Check pg_regress with postgresql 17 after installing the last version"):
+                  test.check_pg_regress(Path("${psql_17}/lib/pgxs/src/test/regress/pg_regress"), "17", pg_regress_test_name)
+              ''
+            else
+              ""
+          }
         '';
     };
 in
@@ -221,6 +248,7 @@ builtins.listToAttrs (
       "pg_hashids"
       "pg_jsonschema"
       "pg_net"
+      "pg_repack"
       "pg_stat_monitor"
       "pg_tle"
       "pgaudit"
diff --git a/nix/ext/tests/pg_repack.nix b/nix/ext/tests/pg_repack.nix
deleted file mode 100644
index dae534d2e..000000000
--- a/nix/ext/tests/pg_repack.nix
+++ /dev/null
@@ -1,162 +0,0 @@
-{ self, pkgs }:
-let
-  pname = "pg_repack";
-  inherit (pkgs) lib;
-  installedExtension =
-    postgresMajorVersion: self.packages.${pkgs.system}."psql_${postgresMajorVersion}/exts/${pname}-all";
-  versions = postgresqlMajorVersion: (installedExtension postgresqlMajorVersion).versions;
-  postgresqlWithExtension =
-    postgresql:
-    let
-      majorVersion = lib.versions.major postgresql.version;
-      pkg = pkgs.buildEnv {
-        name = "postgresql-${majorVersion}-${pname}";
-        paths = [
-          postgresql
-          postgresql.lib
-          (installedExtension majorVersion)
-        ];
-        passthru = {
-          inherit (postgresql) version psqlSchema;
-          lib = pkg;
-          withPackages = _: pkg;
-        };
-        nativeBuildInputs = [ pkgs.makeWrapper ];
-        pathsToLink = [
-          "/"
-          "/bin"
-          "/lib"
-        ];
-        postBuild = ''
-          wrapProgram $out/bin/postgres --set NIX_PGLIBDIR $out/lib
-          wrapProgram $out/bin/pg_ctl --set NIX_PGLIBDIR $out/lib
-          wrapProgram $out/bin/pg_upgrade --set NIX_PGLIBDIR $out/lib
-        '';
-      };
-    in
-    pkg;
-in
-self.inputs.nixpkgs.lib.nixos.runTest {
-  name = pname;
-  hostPkgs = pkgs;
-  nodes.server =
-    { config, ... }:
-    {
-      virtualisation = {
-        forwardPorts = [
-          {
-            from = "host";
-            host.port = 13022;
-            guest.port = 22;
-          }
-        ];
-      };
-      services.openssh = {
-        enable = true;
-      };
-
-      services.postgresql = {
-        enable = true;
-        package = postgresqlWithExtension self.packages.${pkgs.system}.postgresql_15;
-        enableTCPIP = true;
-        authentication = ''
-          local all postgres peer map=postgres
-          local all all peer map=root
-        '';
-        identMap = ''
-          root root supabase_admin
-          postgres postgres postgres
-        '';
-        ensureUsers = [
-          {
-            name = "supabase_admin";
-            ensureClauses.superuser = true;
-          }
-        ];
-      };
-
-      networking.firewall.allowedTCPPorts = [ config.services.postgresql.settings.port ];
-
-      specialisation.postgresql17.configuration = {
-        services.postgresql = {
-          package = lib.mkForce (postgresqlWithExtension self.packages.${pkgs.system}.postgresql_17);
-        };
-
-        systemd.services.postgresql-migrate = {
-          serviceConfig = {
-            Type = "oneshot";
-            RemainAfterExit = true;
-            User = "postgres";
-            Group = "postgres";
-            StateDirectory = "postgresql";
-            WorkingDirectory = "${builtins.dirOf config.services.postgresql.dataDir}";
-          };
-          script =
-            let
-              oldPostgresql = postgresqlWithExtension self.packages.${pkgs.system}.postgresql_15;
-              newPostgresql = postgresqlWithExtension self.packages.${pkgs.system}.postgresql_17;
-              oldDataDir = "${builtins.dirOf config.services.postgresql.dataDir}/${oldPostgresql.psqlSchema}";
-              newDataDir = "${builtins.dirOf config.services.postgresql.dataDir}/${newPostgresql.psqlSchema}";
-            in
-            ''
-              if [[ ! -d ${newDataDir} ]]; then
-                install -d -m 0700 -o postgres -g postgres "${newDataDir}"
-                ${newPostgresql}/bin/initdb -D "${newDataDir}"
-                ${newPostgresql}/bin/pg_upgrade --old-datadir "${oldDataDir}" --new-datadir "${newDataDir}" \
-                  --old-bindir "${oldPostgresql}/bin" --new-bindir "${newPostgresql}/bin"
-              else
-                echo "${newDataDir} already exists"
-              fi
-            '';
-        };
-
-        systemd.services.postgresql = {
-          after = [ "postgresql-migrate.service" ];
-          requires = [ "postgresql-migrate.service" ];
-        };
-      };
-    };
-  testScript =
-    { nodes, ... }:
-    let
-      pg17-configuration = "${nodes.server.system.build.toplevel}/specialisation/postgresql17";
-    in
-    ''
-      from pathlib import Path
-      versions = {
-        "15": [${lib.concatStringsSep ", " (map (s: ''"${s}"'') (versions "15"))}],
-        "17": [${lib.concatStringsSep ", " (map (s: ''"${s}"'') (versions "17"))}],
-      }
-      extension_name = "${pname}"
-      support_upgrade = False
-      pg17_configuration = "${pg17-configuration}"
-      sql_test_directory = Path("${../../tests}")
-
-      ${builtins.readFile ./lib.py}
-
-      start_all()
-
-      server.wait_for_unit("multi-user.target")
-      server.wait_for_unit("postgresql.service")
-
-      test = PostgresExtensionTest(server, extension_name, versions, sql_test_directory, support_upgrade)
-
-      with subtest("Check upgrade path with postgresql 15"):
-        test.check_upgrade_path("15")
-
-      last_version = None
-      with subtest("Check the install of the last version of the extension"):
-        last_version = test.check_install_last_version("15")
-
-      with subtest("switch to postgresql 17"):
-        server.succeed(
-          f"{pg17_configuration}/bin/switch-to-configuration test >&2"
-        )
-
-      with subtest("Check last version of the extension after upgrade"):
-        test.assert_version_matches(last_version)
-
-      with subtest("Check upgrade path with postgresql 17"):
-        test.check_upgrade_path("17")
-    '';
-}