diff --git a/nix/ext/pgtap.nix b/nix/ext/pgtap.nix
index 159fec433..57f0dc617 100644
--- a/nix/ext/pgtap.nix
+++ b/nix/ext/pgtap.nix
@@ -1,23 +1,17 @@
-{ lib, stdenv, fetchFromGitHub, postgresql, perl, perlPackages, which }:
-
-stdenv.mkDerivation rec {
+{
+  lib,
+  stdenv,
+  fetchFromGitHub,
+  postgresql,
+  perl,
+  perlPackages,
+  which,
+  runCommand,
+}:
+let
   pname = "pgtap";
-  version = "1.2.0";
-
-  src = fetchFromGitHub {
-    owner = "theory";
-    repo = "pgtap";
-    rev = "v${version}";
-    hash = "sha256-lb0PRffwo6J5a6Hqw1ggvn0cW7gPZ02OEcLPi9ineI8=";
-  };
-
-  nativeBuildInputs = [ postgresql perl perlPackages.TAPParserSourceHandlerpgTAP which ];
-
-  installPhase = ''
-    install -D {sql/pgtap--${version}.sql,pgtap.control} -t $out/share/postgresql/extension
-  '';
 
-  meta = with lib; {
+  meta = {
     description = "A unit testing framework for PostgreSQL";
     longDescription = ''
       pgTAP is a unit testing framework for PostgreSQL written in PL/pgSQL and PL/SQL.
@@ -27,6 +21,81 @@ stdenv.mkDerivation rec {
     '';
     homepage = "https://pgtap.org";
     inherit (postgresql.meta) platforms;
-    license = licenses.mit;
+    license = lib.licenses.mit;
   };
-}
+
+  versions = {
+    "1.3.3" = "sha256-YgvfLGF7pLVcCKD66NnWAydDxtoYHH1DpLiYTEKHJ0E=";
+    "1.3.2" = "sha256-jPfYp94mZenKctCW+3tyyvdgVKW6TDsG1/dbBlHK3vE=";
+    "1.3.1" = "sha256-HOgCb1CCfsfbMbMMWuzFJ4B8CfVm9b0sI2zBY3/kqyI=";
+    "1.3.0" = "sha256-RaafUnrMRbvyf2m2Z+tK6XxVXDGnaOkYkSMxIJLnf6A=";
+    "1.2.0" = "sha256-lb0PRffwo6J5a6Hqw1ggvn0cW7gPZ02OEcLPi9ineI8=";
+  };
+
+  mkPackage =
+    version: hash:
+    stdenv.mkDerivation (finalAttrs: {
+      inherit pname version meta;
+
+      src = fetchFromGitHub {
+        owner = "theory";
+        repo = "pgtap";
+        rev = "refs/tags/v${version}";
+        inherit hash;
+      };
+
+      nativeBuildInputs = [
+        postgresql
+        perl
+        perlPackages.TAPParserSourceHandlerpgTAP
+        which
+      ];
+
+      postBuild = ''
+        sed -e "/^default_version =/d" \
+          -e "s|^module_pathname = .*|module_pathname = '\$libdir/pgtap'|" \
+          pgtap.control > pgtap--$version.control
+      '';
+
+      installPhase = ''
+        mkdir -p $out/share/postgresql/extension
+
+        install -Dm644 sql/pgtap--$version.sql $out/share/postgresql/extension
+        install -Dm644 pgtap--$version.control $out/share/postgresql/extension
+      '';
+    });
+
+  packages = lib.listToAttrs (
+    lib.attrValues (
+      lib.mapAttrs (version: hash: lib.nameValuePair "v${version}" (mkPackage version hash)) versions
+    )
+  );
+in
+runCommand "${pname}-all"
+  {
+    inherit pname meta;
+    version = "multi-" + lib.concatStringsSep "-" (map (v: lib.replaceStrings ["."] ["-"] v) (lib.attrNames versions));
+
+    buildInputs = lib.attrValues packages;
+
+    passthru = {
+      inherit packages;
+    };
+  }
+  ''
+    mkdir -p $out/{lib,share/postgresql/extension,bin}
+
+    # Install all versions
+    for drv in ''${buildInputs[@]}; do
+      ls $drv/share/postgresql/extension/
+      cp -v --no-clobber $drv/share/postgresql/extension/* $out/share/postgresql/extension/ || true
+    done
+
+    # Create default symlinks
+    latest_control=$(ls -v $out/share/postgresql/extension/pgtap--*.control | tail -n1)
+    latest_version=$(basename "$latest_control" | sed -E 's/pgtap--([0-9.]+).control/\1/')
+        
+    # Create main control file with default_version
+    echo "default_version = '$latest_version'" > $out/share/postgresql/extension/pgtap.control
+    cat "$latest_control" >> $out/share/postgresql/extension/pgtap.control
+  ''