[Bug][Compatibility] tile-kernels fails to import with TileLang 0.1.12

[GenTang]

Summary

tile-kernels==1.0.0 fails to import when installed with TileLang 0.1.12.

TileKernels currently declares the following dependency:

tilelang>=0.1.9

Therefore, a fresh installation may resolve to TileLang 0.1.12. However, TileKernels still imports determine_target from the old module path:

from tilelang.utils.target import determine_target

In TileLang 0.1.12, determine_target was moved to:

from tilelang.backend.target import determine_target

As a result, importing tile_kernels raises a ModuleNotFoundError.

Minimal reproduction

Run the following command will get ModuleNotFoundError

python -m pip install --no-cache-dir \
    "tile-kernels==1.0.0" \
    "tilelang==0.1.12"

python - <<'PY'
import importlib.metadata

print("tile-kernels:", importlib.metadata.version("tile-kernels"))
print("tilelang:", importlib.metadata.version("tilelang"))

from tile_kernels.modeling.mhc.functional import mhc_pre
PY

Proposed fix

The root cause is in the file tile_kernels/quant/common.py. The following change will fix this bug and this is a common way to fix python dependency bug.

try:
    # TileLang >= 0.1.12
    from tilelang.backend.target import determine_target
except ImportError:
    # TileLang <= 0.1.11
    from tilelang.utils.target import determine_target