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nixos/lib/eval-config: Add warning when masking pkgs (#349453)

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Robert Hensing 2025-01-02 17:41:14 +01:00 • committed by GitHub
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8
nixos/lib/eval-config.nix
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@ -65,6 +65,14 @@ let
withWarnings = x:
lib.warnIf (evalConfigArgs?extraArgs) "The extraArgs argument to eval-config.nix is deprecated. Please set config._module.args instead."
lib.warnIf (evalConfigArgs?check) "The check argument to eval-config.nix is deprecated. Please set config._module.check instead."
lib.warnIf (specialArgs?pkgs) ''
You have set specialArgs.pkgs, which means that options like nixpkgs.config
and nixpkgs.overlays will be ignored. If you wish to reuse an already created
pkgs, which you know is configured correctly for this NixOS configuration,
please import the `nixosModules.pkgsReadOnly` module from the nixpkgs flake or
`(modulesPath + "/misc/nixpkgs/read-only.nix"), and set `{ nixpkgs.pkgs = <your pkgs>; }`.
This properly disables the ignored options to prevent future surprises.
''
x;
legacyModules =