tldr/pages/common/nix3-build.md

nix build

Build a Nix expression (downloading from the cache when possible). See also: tldr nix-build. See tldr nix3 flake for information about flakes. More information: https://nixos.org/manual/nix/stable/command-ref/new-cli/nix3-build.html.

• Build a package from nixpkgs, symlinking the result to ./result:

nix build {{nixpkgs#pkg}}

• Build a package from a flake in the current directory, showing the build logs in the process:

nix build -L {{.#pkg}}

• Build the default package from a flake in some directory:

nix build {{./path/to/directory}}

• Build a package without making the result symlink, instead printing the store path to the stdout:

nix build --no-link --print-out-paths