don't know how to build these paths:
  /nix/store/nxkmbmzwshcdd8c1kz1a8r8qlfp7ipyx-nix-shell.drv
warning: ignoring the client-specified setting 'store', because it is a restricted setting and you are not a trusted user
building '/nix/store/nxkmbmzwshcdd8c1kz1a8r8qlfp7ipyx-nix-shell.drv' on farm.numtide.com:50051
nix-shell> bld1: building nxkmbmzwshcdd8c1kz1a8r8qlfp7ipyx-nix-shell.drv
nix-shell> Running phase: buildPhase