6e0313d24e
We are hitting a long tail of problems at work related to old nix-direnv sneaking old nix versions in that would be fixed by https://github.com/nix-community/nix-direnv/pull/513, except that the issue is that nix-direnv itself is too old. It would at least be very helpful to print out *what* ancient nix version is at fault.
32 lines
1.0 KiB
Nix
32 lines
1.0 KiB
Nix
let
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requiredVersion = import ./lib/minver.nix;
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in
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if !builtins ? nixVersion || builtins.compareVersions requiredVersion builtins.nixVersion == 1 then
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abort ''
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This version of Nixpkgs requires Nix >= ${requiredVersion} but it is being
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evaluated with Nix ${builtins.nixVersion or "(too old to know)"}, please upgrade:
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- If you are running NixOS, `nixos-rebuild' can be used to upgrade your system.
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- Alternatively, with Nix > 2.0 `nix upgrade-nix' can be used to imperatively
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upgrade Nix. You may use `nix-env --version' to check which version you have.
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- If you installed Nix using the install script (https://nixos.org/nix/install),
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it is safe to upgrade by running it again:
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curl -L https://nixos.org/nix/install | sh
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For more information, please see the NixOS release notes at
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https://nixos.org/nixos/manual or locally at
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${toString ./nixos/doc/manual/release-notes}.
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If you need further help, see https://nixos.org/nixos/support.html
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''
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else
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import ./pkgs/top-level/impure.nix
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