tvl-depot/ops/nixos.nix
Vincent Ambo f520bd40ca refactor: Replace 'depotPath' with 'depot.path'
Instead of having two ways of accessing the path to the depot (one of
which was stuttering, depot.depotPath) we settle on only one:
depot.path.

This was mostly used for NixOS module imports.

Co-Authored-By: Florian Klink <flokli@flokli.de>
Change-Id: I2c0db23383fc34f6ca76baaad4cc4af2d9dfae15
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2962
Tested-by: BuildkiteCI
Reviewed-by: grfn <grfn@gws.fyi>
Reviewed-by: sterni <sternenseemann@systemli.org>
2021-04-12 21:55:07 +00:00

45 lines
1.3 KiB
Nix

# Helper functions for instantiating depot-compatible NixOS machines.
{ depot, lib, pkgs, ... }@args:
let inherit (lib) findFirst isAttrs;
in rec {
# This provides our standard set of arguments to all NixOS modules.
baseModule = { ... }: {
_module.args = {
inherit (args) depot;
};
};
nixosFor = configuration: (depot.third_party.nixos {
configuration = { ... }: {
imports = [
baseModule
configuration
];
};
});
findSystem = hostname:
(findFirst
(system: system.config.networking.hostName == hostname)
(throw "${hostname} is not a known NixOS host")
(map nixosFor depot.ops.machines.all-systems));
rebuild-system = pkgs.writeShellScriptBin "rebuild-system" ''
set -ue
if [[ $EUID -ne 0 ]]; then
echo "Oh no! Only root is allowed to rebuild the system!" >&2
exit 1
fi
echo "Rebuilding NixOS for $HOSTNAME"
system=$(nix-build -E "((import ${toString depot.path} {}).ops.nixos.findSystem \"$HOSTNAME\").system" --no-out-link --show-trace)
nix-env -p /nix/var/nix/profiles/system --set $system
$system/bin/switch-to-configuration switch
'';
# Systems that should be built in CI
whitbySystem = (nixosFor depot.ops.machines.whitby).system;
meta.targets = [ "whitbySystem" ];
}