32 lines
923 B
Nix
32 lines
923 B
Nix
{
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config,
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lib,
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pkgs,
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...
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}:
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{
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# dix: https://github.com/faukah/dix
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# rust based
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# module from https://github.com/getchoo/borealis/blob/a35749aa6280fbe4cbe72291bb9c4cc643780c76/modules/nixos/custom/activation-diff.nix
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# nvd: https://discourse.nixos.org/t/nvd-simple-nix-nixos-version-diff-tool/12397
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# python based
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# module from https://github.com/luishfonseca/dotfiles/blob/ab7625ec406b48493eda701911ad1cd017ce5bc1/modules/upgrade-diff.nix
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# gated on formatAttr which is set by nixos-generators
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system.activationScripts.show-nixos-closure-diff = lib.mkIf ((config.formatAttr or null) == null) {
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supportsDryActivation = true;
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text =
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if pkgs ? dix then
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''
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${pkgs.dix}/bin/dix /run/current-system "$systemConfig"
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''
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else
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''
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${pkgs.nvd}/bin/nvd --nix-bin-dir=${pkgs.nix}/bin diff /run/current-system "$systemConfig"
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'';
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};
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}
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