1error:2 … in the right operand of the update (//) operator3 at /var/lib/nixbot/worktrees/1042-1fbfadbba995-94b7b6da/nix/checks/default.nix:57:4:4 56| }5 57| // lib.optionalAttrs (lib.hasSuffix "linux" system) {6 | ^7 58| nixos-test-niks3 = pkgs.callPackage ./nixos-test-niks3.nix {89 … while evaluating the attribute 'legacyPackages.x86_64-darwin'10 at «github:NixOS/nixpkgs/9ab0784f4b4b98a4f100d4cb2245d791cdccf70a?narHash=sha256-ajlPoJbp28hK8Zgua3n%2Bg4LuzGVGlKfs94jA2VVUa3Q%3D»/lib/attrsets.nix:987:47:11 986| */12 987| nameValuePair = name: value: { inherit name value; };13 | ^14 988|1516 (stack trace truncated; use '--show-trace' to show the full, detailed trace)1718 error: Nixpkgs 26.11 has dropped support for x86_64-darwin.1920 The 26.05 stable branch still supports x86_64-darwin, and will21 receive security fixes until the end of 2026. If you use channels,22 you can switch to 26.05 as follows:2324 $ sudo nix-channel --add https://nixos.org/channels/nixpkgs-26.05-darwin nixpkgs25 $ sudo nix-channel --update2627 If this doesn’t work, you may need to run:2829 # Lack of sudo is deliberate:30 $ nix-channel --remove nixpkgs3132 If you use flakes, switch your flake input:3334 inputs.nixpkgs = {35 url = "github:NixOS/nixpkgs/nixpkgs-26.05-darwin";36 };3738 See the release notes for more information and alternatives:3940 https://nixos.org/manual/nixpkgs/unstable/release-notes#x86_64-darwin-26.11