buildx failed with: ERROR: failed to build: failed to solve: process "/bin/sh -c nix \\\n --extra-experimental-features \"nix-command flakes\" \\\n --extra-substituters \"http://host.docker.internal?priority=10\" \\\n --option filter-syscalls false \\\n --show-trace \\\n --log-format raw \\\n build .#${NIX_BUILD_PKG} --out-link /tmp/output/result\n # Evaluate the build result closure (runtime dependencies)\n cp -R $(nix-store -qR /tmp/output/result) /tmp/nix-store-closure\n # Evaluate and copy the symlink contents (build output)\n cp -R /tmp/output/result/ /tmp/nix-build-output\n" did not complete successfully: exit code: 1