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|
{ depot, lib, pkgs, ... }:
let
bins = depot.nix.getBins pkgs.nq [ "fq" "nq" ];
machines = lib.mapAttrs
(name: _:
depot.ops.nixos.nixosFor (import (./. + ("/" + name)))
)
(lib.filterAttrs (_: type: type == "directory") (builtins.readDir ./.));
# TODO(sterni): share code with rebuild-system
localDeployScriptFor = { system, config, ... }:
pkgs.writeShellScript "local-deploy-${system.name}" ''
set -eu
if [[ "$(hostname)" != "${config.networking.hostName}" ]]; then
echo "$0: unexpected hostname: $(hostname). Are you deploying on the right machine?"
exit 1
fi
nix-env -p /nix/var/nix/profiles/system --set "${system}"
"${system}/bin/switch-to-configuration" switch
'';
# Builds the system on the remote machine
deployScriptFor = { system, ... }@machine:
pkgs.writeShellScript "remote-deploy-${system.name}" ''
set -eu
if [ $# != 1 ]; then
printf 'usage: %s [USER@]HOST' "$0"
exit 100
fi
readonly TARGET_HOST="$1"
readonly DEPLOY_DRV="${
builtins.unsafeDiscardOutputDependency (
# Wrapper script around localDeployScriptFor that merely starts the
# local deploy script using and nq and then waits using fq. This means
# we can't Ctrl-C the deploy and it won't be terminated by a lost
# connection.
pkgs.writeShellScript "queue-deploy-${system.name}" ''
readonly STATE_DIR="''${XDG_STATE_HOME:-$HOME/.local/state}/sterni-deploy"
mkdir -p "$STATE_DIR"
export NQDIR="$STATE_DIR"
"${bins.nq}" "${localDeployScriptFor machine}"
"${bins.fq}"
''
).drvPath
}"
nix-copy-closure -s --gzip --to "$TARGET_HOST" "$DEPLOY_DRV"
readonly DEPLOY_OUT="$(ssh "$TARGET_HOST" "nix-store -r '$DEPLOY_DRV'")"
ssh "$TARGET_HOST" "$DEPLOY_OUT"
'';
in
depot.nix.readTree.drvTargets (
# this somehow becomes necessarily ugly with nixpkgs-fmt
machines // { inherit deployScriptFor; } //
lib.mapAttrs'
(name: _: {
name = "${name}System";
value = machines.${name}.system;
})
machines
//
lib.mapAttrs'
(name: _: {
name = "${name}Deploy";
value = deployScriptFor machines.${name};
})
machines
)
|
