[PATCH 1/2] vis: Add missing file(1) dependency

Required for syntax hilighting; opening /etx/nixos/configuration.nix
immediatly prints

  sh: file: command not found

Improve description while here.

The attachment is missing. It’s probably Discourse doing some sort of filtering. Do you mind sending it again to the patches email address?

Just sent it again to nixos1+dev-patches@discoursemail.com via

git format-patch -1
git send-email --to=nixos1+dev-patches@discoursemail.com \
    ./0001-vis-Add-missing-file-1-dependency.patch


arrived but is missing the patch again.