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|
{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.unison;
pairOf = t:
let list = types.addCheck (types.listOf t) (l: length l == 2);
in list // { description = list.description + " of length 2"; };
pairOptions = {
options = {
stateDirectory = mkOption {
type = types.path;
default = "${config.xdg.dataHome}/unison";
defaultText = "$XDG_DATA_HOME/unison";
description = ''
Unison state directory to use.
'';
};
commandOptions = mkOption rec {
type = with types; attrsOf str;
apply = mergeAttrs default;
default = {
repeat = "watch";
sshcmd = "${pkgs.openssh}/bin/ssh";
ui = "text";
auto = "true";
batch = "true";
log = "false"; # don't log to file, handled by systemd
};
description = ''
Additional command line options as a dictionary to pass to the
<literal>unison</literal> program.
</para><para>
See
<citerefentry>
<refentrytitle>unison</refentrytitle>
<manvolnum>1</manvolnum>
</citerefentry>
for a list of available options.
'';
};
roots = mkOption {
type = pairOf types.str;
example = literalExample ''
[
"/home/user/documents"
"ssh://remote/documents"
]
'';
description = ''
Pair of roots to synchronise.
'';
};
};
};
serialiseArg = key: val: escapeShellArg "-${key}=${escape [ "=" ] val}";
serialiseArgs = args: concatStringsSep " " (mapAttrsToList serialiseArg args);
makeDefs = gen:
mapAttrs'
(name: pairCfg: nameValuePair "unison-pair-${name}" (gen name pairCfg))
cfg.pairs;
in {
meta.maintainers = with maintainers; [ pacien ];
options.services.unison = {
enable = mkEnableOption "Unison synchronisation";
pairs = mkOption {
type = with types; attrsOf (submodule pairOptions);
default = { };
example = literalExample ''
{
roots = [
"/home/user/documents"
"ssh://remote/documents"
];
}
'';
description = ''
Unison root pairs to keep synchronised.
'';
};
};
config = mkIf cfg.enable {
systemd.user.services = makeDefs (name: pairCfg: {
Unit = {
Description = "Unison pair sync (${name})";
# Retry forever, useful in case of network disruption.
StartLimitIntervalSec = 0;
};
Service = {
Restart = "always";
RestartSec = 60;
CPUSchedulingPolicy = "idle";
IOSchedulingClass = "idle";
Environment = [ "UNISON='${toString pairCfg.stateDirectory}'" ];
ExecStart = ''
${pkgs.unison}/bin/unison \
${serialiseArgs pairCfg.commandOptions} \
${strings.concatMapStringsSep " " escapeShellArg pairCfg.roots}
'';
};
Install = { WantedBy = [ "default.target" ]; };
});
};
}
|
