1error:2 … while evaluating the attribute 'packages."${(pkgs).stdenv.hostPlatform.system}".default'3 at /var/lib/nixbot/worktrees/956-f605fda68195-1af1a934/flake.nix:20:7:4 19| {5 20| packages = eachSystem (pkgs: {6 | ^7 21| default = pkgs.python3.pkgs.callPackage ./default.nix { };89 … while evaluating the attribute 'legacyPackages.x86_64-darwin'10 at «git+https://github.com/NixOS/nixpkgs?ref=nixpkgs-unstable&rev=716c7a2664ca8325617b8a7fbb609273f2c4cae7&shallow=1»/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