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fix: use trait dispatch for array Packable::unpack in card_game_contract#21683

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nchamo merged 1 commit intobackport-to-v4-next-stagingfrom
claudebox/fix-backport-ci-21654
Mar 17, 2026
Merged

fix: use trait dispatch for array Packable::unpack in card_game_contract#21683
nchamo merged 1 commit intobackport-to-v4-next-stagingfrom
claudebox/fix-backport-ci-21654

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Summary

Fixes CI failure on backport PR #21654 caused by card_game_contract compilation error.

The <[T; N]>::unpack(...) turbofish syntax doesn't work in Noir for calling static trait methods on array types. Changed to Packable::unpack(...) with explicit type annotations, letting the compiler infer the correct impl from the assignment target.

Details

  • game.nr:87<[PlayerEntry; NUMBER_OF_PLAYERS]>::unpack(...)let players: [PlayerEntry; NUMBER_OF_PLAYERS] = Packable::unpack(...)
  • game.nr:93<[Card; PLAYABLE_CARDS]>::unpack(...)let rounds_cards: [Card; PLAYABLE_CARDS] = Packable::unpack(...)

This was introduced in commit c6e2040 (PR #21576 "implement manual Packable for structs with sub-Field members") which was backported to v4-next.

All 8 card_game_contract tests pass after the fix.

ClaudeBox log: https://claudebox.work/s/5801e05688fc0bd3?run=1

The turbofish syntax <[T; N]>::unpack(...) is not supported by Noir for
calling static trait methods on array types. Use Packable::unpack(...)
with type annotations instead, letting the compiler infer the correct
impl from the assignment target type.
@AztecBot AztecBot added the claudebox Owned by claudebox. it can push to this PR. label Mar 17, 2026
@nchamo nchamo marked this pull request as ready for review March 17, 2026 15:33
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Flakey Tests

🤖 says: This CI run detected 1 tests that failed, but were tolerated due to a .test_patterns.yml entry.

\033FLAKED\033 (8;;http://ci.aztec-labs.com/e30777e622088568�e30777e6220885688;;�):  yarn-project/end-to-end/scripts/run_test.sh simple src/e2e_epochs/epochs_l1_reorgs.parallel.test.ts "updates L1 to L2 messages changed due to an L1 reorg" (66s) (code: 0) group:e2e-p2p-epoch-flakes

@nchamo nchamo merged commit e4c029b into backport-to-v4-next-staging Mar 17, 2026
21 checks passed
@nchamo nchamo deleted the claudebox/fix-backport-ci-21654 branch March 17, 2026 15:58
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