eval #77 evaluation failed

evaluation failed: nix-eval-jobs (packages.x86_64-linux) exited with status Some(1)
stderr:
error:
       … while updating the lock file of flake 'git+file:///var/lib/argunix/work/77?rev=fa8408a298f88f0afcf696df0c8f974e67dbf20f&shallow=1'

       … while updating the flake input 'flake-parts'

       … while updating the flake input 'flake-parts/nixpkgs-lib'

       error: cannot update unlocked flake input 'flake-parts/nixpkgs-lib' in pure mode
error: worker error: error:
              … while updating the lock file of flake 'git+file:///var/lib/argunix/work/77?rev=fa8408a298f88f0afcf696df0c8f974e67dbf20f&shallow=1'

              … while updating the flake input 'flake-parts'

              … while updating the flake input 'flake-parts/nixpkgs-lib'

              error: cannot update unlocked flake input 'flake-parts/nixpkgs-lib' in pure mode