I am on nixos-unstable and I  have 
"error: unexpected EOF reading a line "
at least for 2 packages, is it sthg in my configuration.nix or config.nix ? 
nix-env -i python3.6-jupyter_console --show-trace              ~/luarocks2nix
installing ‘python3.6-jupyter_console-5.0.0’
building path(s) ‘/nix/store/qc80z1q9vw8w0arr6hb0r1669vp5adjk-user-environment’
error: unexpected EOF reading a line
builder for ‘/nix/store/14azf52jcs9bw1v9ik9hqai44dhrn79w-user-environment.drv’ failed with exit code 1