Created
January 5, 2019 03:16
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# neither A nor B is working. I don't see this in the activation script or under `result/etc/` | |
{ | |
# A | |
system.activationScripts = { | |
nixpkgsPin = { | |
text = '' | |
ln -sfn ${pinnedNixpkgs} /etc/nixpkgs | |
''; | |
deps = []; | |
}; | |
}; | |
# B | |
system.activationScripts.nixpkgs = stringAfter [ "users" "groups" ] '' | |
ln -sfn ${pinnedNixpkgs} /etc/nixpkgs | |
''; | |
} |
I think what you want is
system.extraSystemBuilderCmds = '' ln -sv ${pinnedNixpkgs} $out/nixpkgs '';
It does not seem to work! I can't seem to find the option over on https://nixos.org/nixos/options.html#system.extr either.
EDIT: Oh I see, it's an internal option that's why we cannot see it over on the documentation side. https://github.com/NixOS/nixpkgs/blob/0a124ba93d4e0f9e77d003402e7a6b0e56ef8aa1/nixos/modules/system/activation/top-level.nix#L215-L222
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I think what you want is
What this precisely does is described
So nixpkgs will end up at
/run/current-system/nixpkgs
.