these 4 derivations will be built:
  /nix/store/jr1fqm54w6xcb8pvswphb5a3spg2gayp-claude.drv
  /nix/store/gk93jn596f3y6k5s3jk6x1a1fgkix25k-claude-code-2.1.306.drv
  /nix/store/hmmh2fd4fwha36md5igi8yvm620gv3jn-claudebox.drv
  /nix/store/yclxrvmlw8zkpsnm4jh4v3jhb7ls04v6-check-claudebox.drv
building '/nix/store/hmmh2fd4fwha36md5igi8yvm620gv3jn-claudebox.drv'
building '/nix/store/yclxrvmlw8zkpsnm4jh4v3jhb7ls04v6-check-claudebox.drv'

upload niks3: ok