stderr: useradd: UID 30011 is not unique

[osalbahr]

trafficstars

Is there a reason 30000 is hardcoded?

---

Error

Error: 
   0: Install failure
   1: Error executing action
   2: Action `create_users_and_group` errored
   3: Action `create_user` errored
   4: Failed to execute command with status 4 `"useradd" "--home-dir" "/var/empty" "--comment" "Nix build user 11" "--gid" "30000" "--groups" "30000" "--no-user-group" "--system" "--shell" "/sbin/nologin" "--uid" "30011" "--password" "!" "nixbld11"`, stdout: 
      stderr: useradd: UID 30011 is not unique

Metadata

key	value
version	0.15.1
os	linux
arch	x86_64

[Hoverbear]

30000 is what the official install scripts use, and we generally match them. We should address this by checking UID as well as suggested in #842