diff --git a/nix/packages/extension-catalog.nix b/nix/packages/extension-catalog.nix
index d8d559121..547f7baaa 100644
--- a/nix/packages/extension-catalog.nix
+++ b/nix/packages/extension-catalog.nix
@@ -116,13 +116,6 @@
           ''
         )
       ) perMajor;
-
-      versions = lib.mapAttrs' (
-        major: wrappers:
-        lib.nameValuePair "site-extensions-versions-${major}" (
-          lib.recurseIntoAttrs (lib.mapAttrs (_: lib.recurseIntoAttrs) wrappers)
-        )
-      ) perMajor;
     in
     {
       packages = catalogs // {
@@ -163,6 +156,6 @@
           '';
         };
       };
-      legacyPackages = catalogs // versions;
+      legacyPackages = catalogs;
     };
 }
diff --git a/nix/packages/postgres.nix b/nix/packages/postgres.nix
index 87daccdae..279ad638c 100644
--- a/nix/packages/postgres.nix
+++ b/nix/packages/postgres.nix
@@ -216,17 +216,21 @@
       #    installed, and a receipt.json file containing metadata about the
       #    install.
       #  - exts: an attrset containing all the extensions, mapped to their
-      #    package names.
+      #    package names. Not exposed for the "cli" variant.
       makePostgres =
         version:
         {
           variant ? "full",
           latestOnly ? false,
         }:
-        lib.recurseIntoAttrs {
-          bin = makePostgresBin version { inherit variant latestOnly; };
-          exts = makeOurPostgresPkgsSet version { inherit variant latestOnly; };
-        };
+        lib.recurseIntoAttrs (
+          {
+            bin = makePostgresBin version { inherit variant latestOnly; };
+          }
+          // lib.optionalAttrs (variant != "cli") {
+            exts = makeOurPostgresPkgsSet version { inherit variant latestOnly; };
+          }
+        );
       basePackages = {
         psql_15 = makePostgres "15" { };
         psql_17 = makePostgres "17" { };