haccfiles/lib/deploy.nix

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2020-11-27 20:56:20 +00:00
let
pkgs = import <nixpkgs> {};
lib = pkgs.lib;
hosts = import ../configuration/hosts;
nixosHosts = lib.filterAttrs (name: host: host ? ssh) hosts;
allGroups = lib.unique (
lib.flatten (
lib.mapAttrsToList (
name: host: host.groups
) hosts
)
);
hostsInGroup = group:
lib.filterAttrs (
k: v: builtins.elem group v.groups
) hosts;
hostsInAllGroups = lib.listToAttrs (
map (
group: lib.nameValuePair group (
lib.attrNames (hostsInGroup group)
)
) allGroups );
mkDeploy = hostnames: pkgs.writeScript "deploy-${lib.concatStringsSep "-" hostnames}" ''
#!${pkgs.stdenv.shell}
set -e -o pipefail
export PATH=/run/wrappers/bin/:${with pkgs; lib.makeBinPath [
coreutils
openssh
nix
gnutar
findutils
nettools
gzip
git
]}
MODE=$1
shift || true
ARGS=$@
[ "$MODE" == "" ] && MODE="switch"
${lib.concatMapStrings (hostname: let
hostAttrs = nixosHosts.${hostname};
nixosSystem = (import <nixpkgs/nixos/lib/eval-config.nix> {
modules = [
"${toString ../configuration}/hosts/${hostname}/configuration.nix"
];
system = if hostAttrs ? system then hostAttrs.system else "x86_64-linux";
}).config.system.build.toplevel;
in ''
(
echo "deploying ${hostname}..."
nix copy --no-check-sigs --to ssh://${hostAttrs.ssh.host} ${nixosSystem}
ssh $NIX_SSHOPTS ${hostAttrs.ssh.host} "sudo nix-env -p /nix/var/nix/profiles/system -i ${nixosSystem}"
ssh $NIX_SSHOPTS ${hostAttrs.ssh.host} "sudo /nix/var/nix/profiles/system/bin/switch-to-configuration $MODE $ARGS"
) &
PID_LIST+=" $!"
'') hostnames}
echo "deploys started, waiting for them to finish..."
trap "kill $PID_LIST" SIGINT
wait $PID_LIST
'';
in {
deploy = (lib.mapAttrs (hostname: hostAttrs: mkDeploy [ hostname ]) nixosHosts)
// (lib.mapAttrs (group: hosts: mkDeploy hosts) hostsInAllGroups)
// { all = mkDeploy (lib.attrNames nixosHosts); };
}