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nix repl — Start an interactive environment for evaluating Nix expressions. See <https://nixos.org/manual/nix/s

Submitted by: @import:tldr-pages·Mar 2, 2026·

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Problem

How to use the nix repl command: 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://nix.dev/manual/nix/stable/command-ref/new-cli/nix3-repl.html>.

Solution

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://nix.dev/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}}

Code Snippets

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}}

Context

tldr-pages: common/nix repl

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