nixpkgs/default.nix at master · dominik-lukacs/nixpkgs

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let

requiredVersion = import ./lib/minver.nix;

if !builtins ? nixVersion || builtins.compareVersions requiredVersion builtins.nixVersion == 1 then

abort ''

This version of Nixpkgs requires Nix >= ${requiredVersion}, please upgrade:

- If you are running NixOS, `nixos-rebuild' can be used to upgrade your system.

- Alternatively, with Nix > 2.0 `nix upgrade-nix' can be used to imperatively

upgrade Nix. You may use `nix-env --version' to check which version you have.

- If you installed Nix using the install script (https://nixos.org/nix/install),

it is safe to upgrade by running it again:

curl -L https://nixos.org/nix/install | sh

For more information, please see the NixOS release notes at

https://nixos.org/nixos/manual or locally at

${toString ./nixos/doc/manual/release-notes}.

If you need further help, see https://nixos.org/nixos/support.html

else

import ./pkgs/top-level/impure.nix