dogfood nixcp everywhere

.github/workflows/build-packages.yml

@@ -64,16 +64,11 @@ jobs:
         # https://stackoverflow.com/a/58859404
         if: '!cancelled()'
         run: |
-          derivations=()
-          while IFS=$'\n' read derivation; do
-              derivations+=("$derivation")
-          done < <(nix path-info --derivation "${{ matrix.package }}")
-
-          for derivation in "${derivations[@]}"; do
-              nix copy -j8 \
-                --to 's3://nixcache?endpoint=s3.cy7.sh&secret-key=/home/runner/cache-priv-key.pem' \
-                $(nix-store --query --requisites --include-outputs "$derivation")
-          done
+          nix run git+https://git.cy7.sh/cy/nixcp.git -- \
+            --to 's3://nixcache?endpoint=s3.cy7.sh&secret-key=/home/runner/cache-priv-key.pem' \
+            -u https://nix-community.cachix.org \
+            -u https://nixcache.cy7.sh \
+            "${{ matrix.package }}"
 
       - name: prepare tarball to upload
         run: nix run github:nixos/nixpkgs#gnutar hcvf result.tar result