libjson-rpc-cpp 1.3.0 -> 1.4.1 https://github.com/cinemast/libjson-rpc-cpp/releases attrpath: libjson-rpc-cpp Received ExitFailure 1 when running Raw command: /nix/store/3nqhcyc7vid1npgcd0m7arg5sn325nhz-nix-2.12.0/bin/nix eval -f . "(let pkgs = import ./. {}; in builtins.hasAttr \"updateScript\" pkgs.libjson-rpc-cpp)" Standard error: error: attribute '(let pkgs = import ' in selection path '(let pkgs = import ./. {}; in builtins.hasAttr "updateScript" pkgs.libjson-rpc-cpp)' not found