By: Tom Sydney Kerckhove <syd@cs-syd.eu>
Add coreutils to impure-test runtime inputs The NixCI impure runner does not put coreutils on PATH, so `mktemp` was not found. writeShellApplication only exposes runtimeInputs, so add coreutils explicitly.
| Time to Start | Worker time | Duration | Time to finish | Idle | |
| Config | 25s | 7s | 7s | 33s | 25s |
| Eval | 33s | 24s | 24s | 58s | 0s |
| Build | 1m08s | 33m18s | 33m09s | 34m17s | 9s |
| Test | 1m38s | 39m46s | 39m46s | 41m24s | 0s |
| Suite | 25s | 1h13m36s | 40m58s | 41m24s | 35s |