write to correct path

correct path

.github/workflows/e2e_runtime-reproducibility.yml

@@ -39,11 +39,11 @@ jobs:
         run: |
           nix build .#${{ matrix.build-target }} --option substituters https://cache.nixos.org --builders ""
           reference_checksum="$(jq  -r '.manifests[0].digest' result/index.json)"
-          echo "$reference_checksum" > reference_checksum.txt
+          echo "$reference_checksum" > ${{ matrix.build-target }}-${{ matrix.os }}-reference_checksum.txt
 
           nix build .#${{ matrix.build-target }} --rebuild --option substituters https://cache.nixos.org --builders "" -o rebuild
           rebuild_checksum="$(jq  -r '.manifests[0].digest' rebuild/index.json)"
-          echo "$rebuild_checksum" > rebuild_checksum.txt
+          echo "$rebuild_checksum" > ${{ matrix.build-target }}-${{ matrix.os }}-rebuild_checksum.txt
       - name: Upload Build Artifacts
         uses: actions/upload-artifact@b4b15b8c7c6ac21ea08fcf65892d2ee8f75cf882 # v4.4.3
         with:
@@ -97,8 +97,8 @@ jobs:
               for system in os_list:
                   reference_checksum_filename = f"{target}-{system}-reference_checksum.txt"
                   rebuild_checksum_filename = f"{target}-{system}-rebuild_checksum.txt"
-                  with open(os.path.join(download_dir, reference_checksum_filename)) as f_reference:
-                      with open(os.path.join(download_dir, rebuild_checksum_filename)) as f_rebuild:
+                  with open(os.path.join(download_dir, f"{target}-{system}-checksum-reference", reference_checksum_filename)) as f_reference:
+                      with open(os.path.join(download_dir, f"{target}-{system}-checksum-rebuild", rebuild_checksum_filename)) as f_rebuild:
                           reference_checksum = f_reference.readline()
                           if not reference_checksum in seen:
                               seen[reference_checksum] = []