Fediversity/deployment/check/common/model.nix

91 lines
2.6 KiB
Nix

{
config,
pkgs,
lib,
...
}:
let
inherit (lib) mkOption types;
in
{
config = {
resources.login-shell = {
description = "The operator needs to be able to log into the shell";
request =
{ ... }:
{
_class = "fediversity-resource-request";
options = {
wheel = mkOption {
description = "Whether the login user needs root permissions";
type = types.bool;
default = false;
};
packages = mkOption {
description = "Packages that need to be available in the user environment";
type = with types; attrsOf package;
};
};
};
policy =
{ config, ... }:
{
_class = "fediversity-resource-policy";
options = {
username = mkOption {
description = "Username for the operator";
type = types.str; # TODO: use the proper constraints from NixOS
};
wheel = mkOption {
description = "Whether to allow login with root permissions";
type = types.bool;
default = false;
};
};
config = {
resource-type = types.raw; # TODO: splice out the user type from NixOS
apply =
requests:
let
# Filter out requests that need wheel if policy doesn't allow it
validRequests = lib.filterAttrs (
_name: req: !req.login-shell.wheel || config.wheel
) requests.resources;
in
lib.optionalAttrs (validRequests != { }) {
${config.username} = {
isNormalUser = true;
packages =
with lib;
attrValues (concatMapAttrs (_name: request: request.login-shell.packages) validRequests);
extraGroups = lib.optional config.wheel "wheel";
};
};
};
};
};
applications.hello =
{ ... }:
{
description = ''Command-line tool that will print "Hello, world!" on the terminal'';
module =
{ ... }:
{
options.enable = lib.mkEnableOption "Hello in the shell";
};
implementation = cfg: {
resources = lib.optionalAttrs cfg.enable {
hello.login-shell.packages.hello = pkgs.hello;
};
};
};
};
options."example-configuration" = mkOption {
type = config.configuration;
default = {
enable = true;
applications.hello.enable = true;
};
};
}