nix-shell

Start an interactive shell based on a Nix expression.

• Start with nix expression in `shell.nix` or `default.nix` in the current directory:

nix-shell

• Run shell command in non-interactive shell and exit:

nix-shell --run "{command} {command_arguments}"

• Start with expression in `default.nix` in the current directory:

nix-shell {default.nix}

• Start with packages loaded from nixpkgs:

nix-shell --packages {package_name_1} {package_name_2}

• Start with packages loaded from specific nixpkgs revision:

nix-shell --packages {package_names} -I nixpkgs={https://github.com/NixOS/nixpkgs/archive/nixpkgs_revision.tar.gz}

• Evaluate rest of file in specific interpreter, for use in `#!-scripts` (see <https://nixos.org/manual/nix/stable/#use-as-a-interpreter>):

nix-shell -i {interpreter} --packages {package_names}

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