1let requiredVersion = import ./lib/minver.nix; in
2
3if ! builtins ? nixVersion || builtins.compareVersions requiredVersion builtins.nixVersion == 1 then
4
5 abort ''
6
7 This version of Nixpkgs requires Nix >= ${requiredVersion}, please upgrade:
8
9 - If you are running NixOS, `nixos-rebuild' can be used to upgrade your system.
10
11 - Alternatively, with Nix > 2.0 `nix upgrade-nix' can be used to imperatively
12 upgrade Nix. You may use `nix-env --version' to check which version you have.
13
14 - If you installed Nix using the install script (https://nixos.org/nix/install),
15 it is safe to upgrade by running it again:
16
17 curl https://nixos.org/nix/install | sh
18
19 For more information, please see the NixOS release notes at
20 https://nixos.org/nixos/manual or locally at
21 ${toString ./doc/manual/release-notes}.
22
23 If you need further help, see https://nixos.org/nixos/support.html
24 ''
25
26else
27
28 import ./pkgs/top-level/impure.nix