diff --git a/nix/ext/pgaudit.nix b/nix/ext/pgaudit.nix
index 01ab66f15..c6b0c3dad 100644
--- a/nix/ext/pgaudit.nix
+++ b/nix/ext/pgaudit.nix
@@ -1,47 +1,91 @@
-{ lib, stdenv, fetchFromGitHub, libkrb5, openssl, postgresql }:
+{ lib, stdenv, fetchFromGitHub, libkrb5, openssl, postgresql, runCommand }:
 #adapted from https://github.com/NixOS/nixpkgs/blob/master/pkgs/servers/sql/postgresql/ext/pgaudit.nix
 let
-  source = {
+  pname = "pgaudit";
+
+  meta = with lib; {
+    description = "Open Source PostgreSQL Audit Logging";
+    homepage = "https://github.com/pgaudit/pgaudit";
+    changelog = "https://github.com/pgaudit/pgaudit/releases/tag/${source.version}";
+    platforms = postgresql.meta.platforms;
+    license = licenses.postgresql;
+  };
+
+  versions = {
     "17" = {
-      version = "17.0";
-      hash = "sha256-3ksq09wiudQPuBQI3dhEQi8IkXKLVIsPFgBnwLiicro=";
+      "17.0" = "sha256-3ksq09wiudQPuBQI3dhEQi8IkXKLVIsPFgBnwLiicro=";
     };
     "16" = {
-      version = "16.0";
-      hash = "sha256-8+tGOl1U5y9Zgu+9O5UDDE4bec4B0JC/BQ6GLhHzQzc=";
+      "16.0" = "sha256-8+tGOl1U5y9Zgu+9O5UDDE4bec4B0JC/BQ6GLhHzQzc=";
     };
     "15" = {
-      version = "1.7.0";
-      hash = "sha256-8pShPr4HJaJQPjW1iPJIpj3CutTx8Tgr+rOqoXtgCcw=";
+      "1.7.0" = "sha256-8pShPr4HJaJQPjW1iPJIpj3CutTx8Tgr+rOqoXtgCcw=";
     };
   }.${lib.versions.major postgresql.version} or (throw "Source for pgaudit is not available for ${postgresql.version}");
-in
-stdenv.mkDerivation {
-  pname = "pgaudit";
-  inherit (source) version;
 
-  src = fetchFromGitHub {
-    owner = "pgaudit";
-    repo = "pgaudit";
-    rev = source.version;
-    hash = source.hash;
-  };
+  mkPackage =
+    version: hash:
+    stdenv.mkDerivation (finalAttrs: {
+      inherit pname version meta;
 
-  buildInputs = [ libkrb5 openssl postgresql ];
+      src = fetchFromGitHub {
+        owner = "pgaudit";
+        repo = "pgaudit";
+        rev = version;
+        inherit hash;
+      };
 
-  makeFlags = [ "USE_PGXS=1" ];
+      buildInputs = [ libkrb5 openssl postgresql ];
 
-  installPhase = ''
-    install -D -t $out/lib pgaudit${postgresql.dlSuffix}
-    install -D -t $out/share/postgresql/extension *.sql
-    install -D -t $out/share/postgresql/extension *.control
-  '';
+      makeFlags = [ "USE_PGXS=1" ];
 
-  meta = with lib; {
-    description = "Open Source PostgreSQL Audit Logging";
-    homepage = "https://github.com/pgaudit/pgaudit";
-    changelog = "https://github.com/pgaudit/pgaudit/releases/tag/${source.version}";
-    platforms = postgresql.meta.platforms;
-    license = licenses.postgresql;
+      postBuild = ''
+        sed -e "/^default_version =/d" \
+          -e "s|^module_pathname = .*|module_pathname = '\$libdir/pgaudit'|" \
+          pgaudit.control > pgaudit--$version.control
+      '';
+
+      installPhase = ''
+        mkdir -p $out/{lib,share/postgresql/extension}
+
+        install -Dm755 pgaudit${postgresql.dlSuffix} $out/lib/pgaudit-$version${postgresql.dlSuffix}
+        install -Dm644 pgaudit--$version.sql $out/share/postgresql/extension/
+        install -Dm644 pgaudit--$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
+    ln -sv $drv/lib/* $out/lib/
+    cp -v --no-clobber $drv/share/postgresql/extension/* $out/share/postgresql/extension/ || true
+  done
+
+  # Create default symlinks
+  latest_control=$(ls -v $out/share/postgresql/extension/pgaudit--*.control | tail -n1)
+  latest_version=$(basename "$latest_control" | sed -E 's/pgaudit--([0-9.]+).control/\1/')
+      
+  # Create main control file with default_version
+  echo "default_version = '$latest_version'" > $out/share/postgresql/extension/pgaudit.control
+  cat "$latest_control" >> $out/share/postgresql/extension/pgaudit.control
+      
+  # Library symlink
+  ln -sfnv pgaudit-$latest_version${postgresql.dlSuffix} $out/lib/pgaudit${postgresql.dlSuffix}
+''