There is https://search.nixos.org/ https://search.nixos.org/ and on the command line you can play around with: $ nix repl nix-repl> :l <nixpkgs> nix-repl> {p

There is https://search.nixos.org/ https://search.nixos.org/ and on the command line you can play around with: $ nix repl nix-repl> :l <nixpkgs> nix-repl> {press tab for auto-complete}