45 lines
801 B
Nix
45 lines
801 B
Nix
{ lib, ... }:
|
|
let
|
|
inherit (lib)
|
|
foldl'
|
|
groupBy
|
|
unique
|
|
;
|
|
|
|
duplicateUids = entries:
|
|
let
|
|
byUid = groupBy (entry: toString entry.value) entries;
|
|
in
|
|
foldl' (
|
|
acc: uid:
|
|
let
|
|
serviceNames = unique (map (entry: entry.entry) byUid.${uid});
|
|
in
|
|
if builtins.length serviceNames > 1 then
|
|
acc ++ [ {
|
|
uid = lib.toInt uid;
|
|
inherit serviceNames;
|
|
} ]
|
|
else
|
|
acc
|
|
) [ ] (builtins.attrNames byUid);
|
|
|
|
in
|
|
{
|
|
# Next stable UID: 20003
|
|
replicate = true;
|
|
|
|
type = lib.types.ints.positive;
|
|
|
|
validate = entries:
|
|
let
|
|
uidConflicts = duplicateUids entries;
|
|
in
|
|
[
|
|
{
|
|
assertion = uidConflicts == [ ];
|
|
message = "Stable UID allocations must be unique.";
|
|
}
|
|
];
|
|
}
|