warning: ignoring untrusted flake configuration setting 'extra-substituters'.
Pass '--accept-flake-config' to trust it
warning: ignoring untrusted flake configuration setting 'extra-trusted-public-keys'.
Pass '--accept-flake-config' to trust it
these 3 paths will be fetched (0.50 MiB download, 1.49 MiB unpacked):
  /nix/store/04f0wpwclgf7dwxvms9vbi9zm5imz3a6-argc-1.21.0
  /nix/store/69iyhfnzxmr7yl4mqgf9px0advl4n5jl-devnet-union-upload-wasm-light-client
  /nix/store/r9py0kk93m3sysgi65dwiffn0nwr83gw-union-home