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add a sane.user option which is shorthand for the default user

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Colin 2023-01-30 08:53:40 +00:00
parent 870afec07e
commit ee9a2b320d
1 changed files with 45 additions and 4 deletions
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49
modules/users.nix
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@ -1,13 +1,16 @@
{ config, lib, sane-lib, ... }:
let
inherit (lib) mapAttrs' mapAttrsToList mkMerge mkOption types;
inherit (builtins) attrValues;
inherit (lib) count mapAttrs' mapAttrsToList mkIf mkMerge mkOption types;
sane-user-cfg = config.sane.user;
cfg = config.sane.users;
path-lib = sane-lib.path;
userModule = types.submodule {
userOptions = {
options = {
fs = mkOption {
type = types.attrs;
default = {};
description = ''
entries to pass onto `sane.fs` after prepending the user's home-dir to the path.
e.g. `sane.users.colin.fs."/.config/aerc" = X`
@ -16,6 +19,22 @@ let
};
};
};
userModule = types.submodule ({ config, ... }: {
options = {
inherit (userOptions) fs;
default = mkOption {
type = types.bool;
default = false;
description = ''
only one default user may exist.
this option determines what the `sane.user` shorthand evaluates to.
'';
};
};
# if we're the default user, inherit whatever settings were routed to the default user
config = mkIf config.default sane-user-cfg;
});
processUser = user: defn: {
sane.fs = mapAttrs' (path: value: {
# TODO: query the user's home dir!
@ -36,13 +55,35 @@ in
into the toplevel `sane` options. it's merely a shorthand.
'';
};
sane.user = mkOption {
type = types.nullOr (types.submodule userOptions);
default = null;
description = ''
options to pass down to the default user
'';
};
};
config =
let
configs = mapAttrsToList processUser cfg;
num-default-users = count (u: u.default) (attrValues cfg);
take = f: {
sane.fs = f.sane.fs;
};
in
take (sane-lib.mkTypedMerge take configs);
in mkMerge [
(take (sane-lib.mkTypedMerge take configs))
{
assertions = [
{
assertion = sane-user-cfg == null || num-default-users != 0;
message = "cannot set `sane.user` without first setting `sane.users.<user>.default = true` for some user";
}
{
assertion = num-default-users <= 1;
message = "cannot set more than one default user";
}
];
}
];
}