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|
{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.bar;
in {
options.services.bar = {
enable = mkEnableOption "the Bar Inventory System";
user = mkOption {
type = types.str;
default = "bar";
description = "User to execute the daemon under";
};
group = mkOption {
type = types.str;
default = "bar";
description = "Group to execute the daemon under";
};
stateDir = mkOption {
type = types.path;
default = "/var/lib/bar";
description = "Directory for the daemon to store semi-transient state (encryption keys etc.)";
};
port = mkOption {
type = types.int;
default = 8080;
description = "Port for the daemon to listen on";
};
host = mkOption {
type = types.str;
default = "localhost";
description = "Host to bind to";
};
approot = mkOption {
type = types.str;
default = "/";
description = "Subdirectory of the daemon-managed site relative to HTTP /; only useful when using a reverse proxy";
};
ipFromHeader = mkOption {
type = types.bool;
default = false;
description = "Determine IP from a HTTP header";
};
thermoprintBaseURL = mkOption {
type = with types; nullOr types.str;
default = null;
example = "http://localhost:80/thermoprint/api";
description = "Thermoprint base url";
};
postgresql = {
user = mkOption {
type = types.str;
default = cfg.user;
};
host = mkOption {
type = types.str;
default = "/tmp";
};
port = mkOption {
type = types.int;
default = 5432;
};
database = mkOption {
type = types.str;
default = cfg.user;
};
poolsize = mkOption {
type = types.int;
default = 10;
};
};
};
imports = [ ./thermoprint-service.nix ];
config = mkIf cfg.enable {
assertions = [
{ assertion = config.services.postgresql.enable;
message = "bar requires PostgreSQL";
}
];
nixpkgs.config.allowUnfree = true;
packages.thermoprint.enable = cfg.thermoprintBaseURL != null;
users.users."${cfg.user}" = {
group = cfg.group;
description = "User for the Bar Inventory System";
isSystemUser = true;
home = cfg.stateDir;
createHome = true;
};
users.groups."${cfg.group}" = {};
nixpkgs.overlays = [(selfPkgs: superPkgs: {
haskell = superPkgs.haskell // {
packages = superPkgs.haskell.packages // {
ghc822 = superPkgs.haskell.packages.ghc822.extend (selfH: superH: {
bar = superPkgs.callPackage ./bar {
haskellPackages = selfH // {
thermoprint-client = if (cfg.thermoprintBaseURL != null)
then selfH.thermoprint-client
else null;
};
};
});
};
};
inherit (selfPkgs.haskell.packages.ghc822) bar;
})];
systemd.services."bar" = {
environment = {
PORT = toString cfg.port;
HOST = cfg.host;
APPROOT = cfg.approot;
IP_FROM_HEADER = if cfg.ipFromHeader then "True" else "False";
TPRINT_BASEURL = mkIf (cfg.thermoprintBaseURL != null) cfg.thermoprintBaseURL;
PGUSER = cfg.postgresql.user;
PGHOST = cfg.postgresql.host;
PGPORT = toString cfg.postgresql.port;
PGDATABASE = cfg.postgresql.database;
PGPOOLSIZE = toString cfg.postgresql.poolsize;
};
bindsTo = [ "postgresql.service" ];
after = [ "postgresql.service" ];
wantedBy = [ "multi-user.target" ];
serviceConfig = {
Type = "notify";
User = cfg.user;
Group = cfg.group;
WorkingDirectory = cfg.stateDir;
ExecStart = "${pkgs.bar}/bin/bar";
};
};
};
}
|
