nixbot

error:
       … in the right operand of the update (//) operator
         at /var/lib/nixbot/worktrees/255-4216934b5877-d0d6afbe/flake.nix:75:34:
           74|         in
           75|         packages // devShells // vmTests);
             |                                  ^
           76|     };

       … while evaluating a branch condition
         at «github:nixos/nixpkgs/c552e6d492ac42d6039dc92a4dd7d608aced167a?narHash=sha256-4jFMNTCCFYP7BfYanzw31ESHRDiOfShYEd/kI%2BT0ks8%3D»/lib/attrsets.nix:1482:29:
         1481|   */
         1482|   optionalAttrs = cond: as: if cond then as else { };
             |                             ^
         1483|

       (stack trace truncated; use '--show-trace' to show the full, detailed trace)

       error: Nixpkgs 26.11 has dropped support for x86_64-darwin.

       The 26.05 stable branch still supports x86_64-darwin, and will
       receive security fixes until the end of 2026. If you use channels,
       you can switch to 26.05 as follows:

           $ sudo nix-channel --add https://nixos.org/channels/nixpkgs-26.05-darwin nixpkgs
           $ sudo nix-channel --update

       If this doesn’t work, you may need to run:

           # Lack of sudo is deliberate:
           $ nix-channel --remove nixpkgs

       If you use flakes, switch your flake input:

           inputs.nixpkgs = {
             url = "github:NixOS/nixpkgs/nixpkgs-26.05-darwin";
           };

       See the release notes for more information and alternatives:

         https://nixos.org/manual/nixpkgs/unstable/release-notes#x86_64-darwin-26.11

debian-12-generic-amd64-20260601-2496.qcow2-nix-vm-test.qcow2:
[   4.3] Setting the machine ID in /etc/machine-id
[   4.3] Copying: backdoor.service to /etc/systemd/system
[   4.4] Copying: mount-store.service to /etc/systemd/system
[   4.4] Copying: resizeguest.service to /etc/systemd/system
[   4.5] Running: /nix/store/v0w1nz1c675f44rhv8a5jnhr1yl3v87z-run-script
[   4.7] SELinux relabelling
[   4.8] Finishing off
Error: output unpacker died

Fedora-Cloud-Base-Generic-43-1.6.x86_64.qcow2-nix-vm-test.qcow2:
[   4.7] Copying: backdoorScript to /usr/bin
[   4.7] Copying: backdoor.service to /etc/systemd/system
[   4.8] Copying: mount-store.service to /etc/systemd/system
[   4.8] Copying: resizeguest.service to /etc/systemd/system
[   4.8] Running: /nix/store/gzk9jg537x705i4x7pzmssl6rg52q918-run-script
[   5.1] SELinux relabelling
[   7.6] Finishing off
Error: output unpacker died

ubuntu-24.04-server-cloudimg-amd64.img-nix-vm-test.qcow2:
[   4.2] Setting the machine ID in /etc/machine-id
[   4.2] Copying: backdoor.service to /etc/systemd/system
[   4.3] Copying: mount-store.service to /etc/systemd/system
[   4.3] Copying: resizeguest.service to /etc/systemd/system
[   4.4] Running: /nix/store/z6cvqmh7bfca91qdq744n586rkd7ij5a-run-script
[   4.6] SELinux relabelling
[   4.7] Finishing off
Error: output unpacker died