[Bugfix] Require quack-kernels>=0.4.1 for cutlass-dsl 4.5+ compatibility

[SmartAI]

Purpose

FIX #47570 (also the root cause of #43141)

Rebased over #47442 (cutlass-dsl 4.5.2 -> 4.6.0, quack floor 0.3.3 -> 0.4.0): still needed — 4.6.0 also has no top-level cutlass.base_dsl.Arch (verified by AST inspection of the v4.6.0 tag), so the current >=0.4.0 floor still admits the last broken quack release. This PR bumps it to 0.4.1, the first release with the corrected import. Fresh installs now resolve quack 0.6.1 (pins cutlass-dsl==4.6.0) and are unaffected.

Users hit this at runtime when vLLM imports quack:

ImportError: cannot import name 'Arch' from 'cutlass.base_dsl' (.../cutlass/base_dsl/__init__.py)

Root cause:

• quack-kernels 0.3.10, 0.3.11 and 0.4.0 wheels contain from cutlass.base_dsl import Arch in rmsnorm.py, softmax.py and cross_entropy.py — all reached from import quack (rmsnorm.py:24 matches the traceback in [Bug]: Deepseek v4 ImportError: cannot import name 'Arch' from 'cutlass.base_dsl' #43141). Earlier releases don't reference Arch on the import quack path (0.3.8/0.3.9 use the correct form in trace.py only; <= 0.3.7 not at all).
• That import only ever worked because nvidia-cutlass-dsl <= 4.4.2 had a top-level from .arch import Arch in base_dsl/dsl.py, re-exported via from .dsl import * in base_dsl/__init__.py. In 4.5.x that import was moved out of module top level (now under TYPE_CHECKING/function scope), so cutlass.base_dsl.Arch no longer exists. Verified by AST inspection of the shipped wheels: Arch is bound at top level of base_dsl/dsl.py in 4.4.2 but not in 4.5.2.
• quack fixed its import in 0.4.1 (from cutlass.base_dsl.arch import Arch; base_dsl/arch.py defining Arch is present in the 4.5.2 wheel).

vLLM pins nvidia-cutlass-dsl[cu13]==4.5.2 but only required quack-kernels>=0.3.3, and quack <= 0.4.0 declares nvidia-cutlass-dsl>=4.4.2 with no upper bound, so resolvers happily co-install the broken combination. Fresh installs usually escape it (they resolve quack 0.5.0, since 0.5.1+ pin nvidia-cutlass-dsl==4.6.0.dev0 and are excluded), which is why the failure is intermittent across environments — stale envs, lockfiles, or lowest-version resolution still land on a broken quack. The issue reporter confirmed their failing env resolved an old quack via uv (#47570 (comment)).

This PR raises the floor to the first release compatible with the pinned cutlass-dsl: quack-kernels>=0.4.1.

Test Plan

1. Confirm the broken combination is currently resolvable (metadata does not protect against it):

   uv pip compile <(printf 'nvidia-cutlass-dsl[cu13]==4.5.2\nquack-kernels==0.4.0\n') --python-platform linux --python-version 3.12
   

2. Confirm the new floor keeps resolving to the same version as today for fresh installs:

   uv pip compile <(printf 'nvidia-cutlass-dsl[cu13]==4.5.2\nquack-kernels>=0.4.1\n') --python-platform linux --python-version 3.12
   

3. Static verification against the shipped wheels: grep from cutlass.base_dsl import Arch across all quack wheels 0.3.3–0.5.3 (present only in 0.3.10/0.3.11/0.4.0; 0.4.1+ use the correct cutlass.base_dsl.arch path); AST check that Arch is not a top-level name of cutlass.base_dsl in the nvidia-cutlass-dsl-libs-base 4.5.2 wheel (it is in 4.4.2).
4. vllm.model_executor.layers.mamba.ops.gdn_chunk_cutedsl and the deepseek_v4 cute-DSL ops only use quack.compile_utils.make_fake_tensor, which exists unchanged in 0.4.1 and 0.5.0.

Test Result

1. Resolves to quack-kernels==0.4.0 + nvidia-cutlass-dsl==4.5.2 — the combination that crashes at import time.
2. Resolves to quack-kernels==0.5.0 + nvidia-cutlass-dsl==4.5.2 — identical to what a fresh pip install vllm picks today, so no behavior change for healthy environments; only the broken quack range is excluded.
3. Confirmed as described.
4. Confirmed via wheel inspection.

[claude]

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[mergify]

This pull request has merge conflicts that must be resolved before it can be
merged. Please rebase the PR, @SmartAI.

https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/working-with-forks/syncing-a-fork

[mergify]

This pull request has merge conflicts that must be resolved before it can be
merged. Please rebase the PR, @SmartAI.

https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/working-with-forks/syncing-a-fork

[mergify]

This pull request has merge conflicts that must be resolved before it can be
merged. Please rebase the PR, @SmartAI.

https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/working-with-forks/syncing-a-fork