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[Lib/Attrsets]: add support for merging with priority overrides

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This commit is contained in:
Antoine Viallon 2024-09-18 20:47:47 +02:00
parent 2e6e4b53b2
commit d7d489674f
Signed by: aviallon
GPG key ID: 186FC35EDEB25716
1 changed files with 23 additions and 2 deletions
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25
lib/attrsets.nix
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@ -1,7 +1,28 @@
{lib, myLib, ...}: {lib, myLib, ...}:
with lib; with lib;
rec { rec {
mergeAttrsRecursive = a: b: foldAttrs (item: acc: getPriority = x:
if isAttrs x && (attrByPath [ "_type" ] "" x) == "override" then
getAttr "priority" x
else
lib.modules.defaultOverridePriority
;
comparePriority = a: b: (getPriority a) - (getPriority b);
mergeAttrsRecursiveWithPriority = a: b:
let
_prio = comparePriority a b;
in
if _prio == 0 then
_mergeAttrsRecursive mergeAttrsRecursiveWithPriority a b
else if _prio > 0 then
a
else
b
;
mergeAttrsRecursive = a: b: _mergeAttrsRecursive _mergeAttrsRecursive a b;
_mergeAttrsRecursive = self: a: b: foldAttrs (item: acc:
if (isNull acc) then if (isNull acc) then
item item
else if (isList item) then else if (isList item) then
@ -11,7 +32,7 @@ rec {
else if (isString item) then else if (isString item) then
acc + item acc + item
else if (isAttrs item) then else if (isAttrs item) then
mergeAttrsRecursive acc item self acc item
else item else item
) null [ b a ]; ) null [ b a ];
} }