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lib/dag: improve dependency cycle error message

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Ching Pei Yang 2025-09-26 00:28:21 +02:00
commit 11fd1b7083
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1 changed files with 3 additions and 2 deletions
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5
lib/dag.nix
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@ -8,7 +8,7 @@
# - the addition of the function `entryBefore` indicating a "wanted
# by" relationship.
{lib}: let
inherit (builtins) isAttrs attrValues attrNames elem all head tail length toJSON isString;
inherit (builtins) isAttrs attrValues attrNames elem all head tail length toJSON isString removeAttrs;
inherit (lib.attrsets) filterAttrs mapAttrs;
inherit (lib.lists) toposort;
inherit (lib.nvim.dag) empty isEntry entryBetween entryAfter entriesBetween entryAnywhere topoSort;
@ -169,10 +169,11 @@ in {
else value)
dag;
sortedDag = topoSort finalDag;
loopDetail = map (loops: removeAttrs loops ["data"]) sortedDag.loops;
result =
if sortedDag ? result
then mapResult sortedDag.result
else abort ("Dependency cycle in ${name}: " + toJSON sortedDag);
else abort ("Dependency cycle in ${name}: " + toJSON loopDetail);
in
result;
}