Splits //ops/nixos into: * //ops/nixos.nix - utility functions for building systems * //ops/machines - shared machine definitions (read by readTree) * //ops/modules - shared NixOS modules (skipped by readTree) This simplifies working with the configuration fixpoint in whitby, and is overall a bit more in line with how NixOS systems in user folders currently work. Change-Id: I1322ec5cc76c0207c099c05d44828a3df0b3ffc1 Reviewed-on: https://cl.tvl.fyi/c/depot/+/2931 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org> Reviewed-by: glittershark <grfn@gws.fyi>
		
			
				
	
	
		
			45 lines
		
	
	
	
		
			1.3 KiB
		
	
	
	
		
			Nix
		
	
	
	
	
	
			
		
		
	
	
			45 lines
		
	
	
	
		
			1.3 KiB
		
	
	
	
		
			Nix
		
	
	
	
	
	
# Helper functions for instantiating depot-compatible NixOS machines.
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{ depot, lib, pkgs, ... }@args:
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let inherit (lib) findFirst isAttrs;
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in rec {
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  # This provides our standard set of arguments to all NixOS modules.
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  baseModule = { ... }: {
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    _module.args = {
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      inherit (args) depot;
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    };
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  };
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  nixosFor = configuration: (depot.third_party.nixos {
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    configuration = { ... }: {
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      imports = [
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        baseModule
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        configuration
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      ];
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    };
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  });
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  findSystem = hostname:
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    (findFirst
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      (system: system.config.networking.hostName == hostname)
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      (throw "${hostname} is not a known NixOS host")
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      (map nixosFor depot.ops.machines.all-systems));
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  rebuild-system = pkgs.writeShellScriptBin "rebuild-system" ''
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    set -ue
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    if [[ $EUID -ne 0 ]]; then
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      echo "Oh no! Only root is allowed to rebuild the system!" >&2
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      exit 1
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    fi
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    echo "Rebuilding NixOS for $HOSTNAME"
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    system=$(nix-build -E "((import ${toString depot.depotPath} {}).ops.nixos.findSystem \"$HOSTNAME\").system" --no-out-link --show-trace)
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    nix-env -p /nix/var/nix/profiles/system --set $system
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    $system/bin/switch-to-configuration switch
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  '';
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  # Systems that should be built in CI
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  whitbySystem = (nixosFor depot.ops.machines.whitby).system;
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  meta.targets = [ "whitbySystem" ];
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}
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