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{ config, pkgs, lib, ... }:
let
inherit (builtins)
genList hashString mul substring ;
inherit (lib)
foldl genAttrs imap mkOption stringToCharacters toLower
types unique ;
inherit (types)
listOf str ;
uid = name:
let
dec = {
"0" = 0; "1" = 1; "2" = 2; "3" = 3;
"4" = 4; "5" = 5; "6" = 6; "7" = 7;
"8" = 8; "9" = 9; "a" = 10; "b" = 11;
"c" = 12; "d" = 13; "e" = 14; "f" = 15;
};
base = 1000000000; # 2^32 > base + 16^7
hex = toLower (substring 0 7 (hashString "sha1" name));
pow = b: n: foldl mul 1 (genList (_: b) n);
digits = imap (i: d: {m = pow 16 (i - 1); d = d;}) (stringToCharacters hex);
f = a: {m, d}: a + m * dec.${d};
in foldl f base digits;
daemons = config.nixsap.system.users.daemons;
normal = config.nixsap.system.users.normal;
groups = config.nixsap.system.groups;
mkGroup = name: { gid = uid name; };
mkDaemonUser = name:
{
isNormalUser = false;
uid = uid name;
group = name;
};
mkNormalUser = name:
{
isNormalUser = true;
uid = uid name;
};
in {
options.nixsap.system = {
users.daemons = mkOption {
type = listOf str;
description = "List of system users with automatic UID and group";
default = [];
};
users.normal = mkOption {
type = listOf str;
description = "List of regular users with automatic UID";
default = [];
};
users.sysops = mkOption {
description = ''
List of local users with special roles in applications or system-wide.
The users in this list are not create automatically.
'';
type = listOf str;
default = [];
};
groups = mkOption {
type = listOf str;
description = "List of groups with automatic GID";
default = [];
};
};
# XXX: Modules for automatic unicity of user names:
imports = [
{ users.groups = genAttrs (unique (daemons ++ groups)) mkGroup; }
{ users.users = genAttrs daemons mkDaemonUser; }
{ users.users = genAttrs normal mkNormalUser; }
];
}
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