diff --git a/ci/default.nix b/ci/default.nix
index 540a0faea0ab7..8a0fbddf0eabb 100644
--- a/ci/default.nix
+++ b/ci/default.nix
@@ -200,5 +200,6 @@ rec {
     officialRelease = false;
     inherit pkgs lib-tests;
     nix = pkgs.nixVersions.latest;
+    supportedSystems = [ system ];
   };
 }
diff --git a/pkgs/top-level/make-tarball.nix b/pkgs/top-level/make-tarball.nix
index 3318b17ba9260..0d7d8146b7c1c 100644
--- a/pkgs/top-level/make-tarball.nix
+++ b/pkgs/top-level/make-tarball.nix
@@ -4,6 +4,7 @@
   pkgs ? import nixpkgs.outPath { },
   nix ? pkgs.nix,
   lib-tests ? import ../../lib/tests/release.nix { inherit pkgs; },
+  supportedSystems ? builtins.fromJSON (builtins.readFile ../../ci/supportedSystems.json),
 }:
 
 pkgs.releaseTools.sourceTarball {
@@ -44,7 +45,12 @@ pkgs.releaseTools.sourceTarball {
   checkPhase = ''
     echo "generating packages.json"
 
-    NIX_STATE_DIR=$TMPDIR NIX_PATH= nix-instantiate --eval --raw --expr "import $src/pkgs/top-level/packages-info.nix {}" | sed "s|$src/||g" | jq -c > packages.json
+    echo ' '''${builtins.toJSON supportedSystems}''' ' |
+      NIX_STATE_DIR=$TMPDIR NIX_PATH= nix-instantiate \
+        --eval --raw --arg-from-stdin supportedSystems \
+        --expr "{ supportedSystems }: import $src/pkgs/top-level/packages-info.nix { supportedSystems = builtins.fromJSON supportedSystems; }" |
+      sed "s|$src/||g" |
+      jq -c > packages.json
 
     # Arbitrary number. The index has ~115k packages as of April 2024.
     if [ $(jq -r '.packages | length' < packages.json) -lt 100000 ]; then
diff --git a/pkgs/top-level/packages-info.nix b/pkgs/top-level/packages-info.nix
index 04f5f42cdfaab..ff8a59e5bb662 100644
--- a/pkgs/top-level/packages-info.nix
+++ b/pkgs/top-level/packages-info.nix
@@ -1,10 +1,29 @@
 {
   trace ? false,
+  supportedSystems,
 }:
 
 let
-  pkgs = import ../.. { config = import ./packages-config.nix; };
+  pkgsSystems =
+    if builtins.all (v: v != builtins.currentSystem) supportedSystems then
+      supportedSystems ++ [ builtins.currentSystem ]
+    else
+      supportedSystems;
+
+  pkgsByArch = builtins.listToAttrs (
+    map (system: {
+      name = system;
+      value = import ../.. {
+        inherit system;
+        config = import ./packages-config.nix;
+      };
+    }) pkgsSystems
+  );
+
+  pkgs = pkgsByArch.${builtins.currentSystem};
+
   inherit (pkgs) lib;
+
   generateInfo =
     path: value:
     let
@@ -23,10 +42,42 @@ let
                   system
                   ;
                 ${if value ? "outputs" then "outputs" else null} = lib.listToAttrs (
-                  lib.map (x: {
-                    name = x;
-                    value = null;
-                  }) value.outputs
+                  lib.map (
+                    x:
+                    let
+                      platforms = lib.intersectLists (value.meta.hydraPlatforms
+                        or (lib.subtractLists (value.meta.badPlatforms or [ ]) (value.meta.platforms or supportedSystems))
+                      ) supportedSystems;
+
+                      outPaths = lib.listToAttrs (
+                        lib.map (
+                          platform:
+                          let
+                            drvForPlatform =
+                              if lib.hasAttrByPath path pkgsByArch.${platform} then
+                                lib.getAttrFromPath path pkgsByArch.${platform}
+                              else
+                                null;
+                            outPath =
+                              if builtins.isAttrs drvForPlatform && drvForPlatform ? ${x}.outPath then
+                                builtins.unsafeDiscardStringContext drvForPlatform.${x}.outPath
+                              else
+                                null;
+                            eval = builtins.tryEval outPath;
+                          in
+                          {
+                            name = platform;
+                            value = if eval.success then eval.value else null;
+                          }
+                        ) platforms
+                      );
+                    in
+                    {
+                      name = x;
+                      value = (builtins.tryEval outPaths).value or null;
+                      # value = null;
+                    }
+                  ) value.outputs
                 );
                 # TODO: Remove the following two fallbacks when all packages have been fixed.
                 # Note: pname and version are *required* by repology, so do not change to
diff --git a/pkgs/top-level/release-small.nix b/pkgs/top-level/release-small.nix
index e7b89beed282b..2a4dd02a2d4c7 100644
--- a/pkgs/top-level/release-small.nix
+++ b/pkgs/top-level/release-small.nix
@@ -42,7 +42,7 @@ in
 {
 
   tarball = import ./make-tarball.nix {
-    inherit nixpkgs;
+    inherit nixpkgs supportedSystems;
     officialRelease = false;
   };
 
diff --git a/pkgs/top-level/release.nix b/pkgs/top-level/release.nix
index 2d0c24ba761b5..abe296568f7ef 100644
--- a/pkgs/top-level/release.nix
+++ b/pkgs/top-level/release.nix
@@ -101,6 +101,7 @@ let
         pkgs
         nixpkgs
         officialRelease
+        supportedSystems
         ;
     };