nixpkgs/default.nix

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let
fromEnv = name: default:
let env = builtins.getEnv name; in
if env == "" then default else env;
configuration = import (fromEnv "NIXOS_CONFIG" /etc/nixos/configuration.nix);
nixpkgs = fromEnv "NIXPKGS" /etc/nixos/nixpkgs;
system = import system/system.nix { inherit configuration nixpkgs; };
in
{ inherit (system)
activateConfiguration
bootStage2
etc
grubMenuBuilder
kernel
modulesTree
nix
system
systemPath
config
;
inherit (system.nixosTools)
nixosCheckout
nixosHardwareScan
nixosInstall
nixosRebuild
nixosGenSeccureKeys
;
inherit (system.initialRamdiskStuff)
bootStage1
extraUtils
initialRamdisk
modulesClosure
;
nixFallback = system.nix;
manifests = system.config.installer.manifests; # exported here because nixos-rebuild uses it
tests = system.config.tests;
}