this derivation will be built:
  /nix/store/r8lwb3kf74lfhi33l829ybvaqjxvzwci-nix-shell.drv
this path will be fetched (0.0 KiB download, 3.9 MiB unpacked):
  /nix/store/ihsf0n83s20jpdyq2x0zjw54miyd7vcq-clan-cli
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy