$ nix-env -iA nixpkgs.bsdgames
error: attribute 'nixpkgs' in selection path 'nixpkgs.bsdgames' not found

$ nix-env -iA bsdgames
error: attribute 'bsdgames' in selection path 'bsdgames' not found

$ nix-env -i bsdgames
error: selector 'bsdgames' matches no derivations

$ nix-env -i nixpkgs.bsdgames
error: selector 'nixpkgs.bsdgames' matches no derivations

$ nix-store -qA bsdgames
error: only one operation may be specified
Try 'nix-store --help' for more information.

$ nix-store -q bsdgames
error: getting status of '/home/ersin/hello/bsdgames': No such file or directory

$ nix-env -qA bsdgames
home-manager-path