tldr/pages/common/nix3-repl.md

nix repl

Start an interactive environment for evaluating Nix expressions. See https://nixos.org/manual/nix/stable/language/index.html for a description of the Nix expression language. More information: https://nixos.org/manual/nix/stable/command-ref/new-cli/nix3-repl.html.

• Start an interactive environment for evaluating Nix expressions:

nix repl

• Load all packages from a flake (e.g. nixpkgs) into scope:

:lf {{nixpkgs}}

• Build a package from an expression:

:b {{expression}}

• Start a shell with package from the expression available:

:u {{expression}}

• Start a shell with dependencies of the package from the expression available:

:s {{expression}}