chore(setup): properly package the repository as a Python package

MANIFEST.in

@@ -0,0 +1,7 @@
+recursive-include flash_mla *.pyi
+recursive-include flash_mla *.typed
+include LICENSE
+
+# Include source files in sdist
+include .gitmodules
+recursive-include csrc *

README.md

@@ -11,7 +11,9 @@ Currently released:
 ### Install
 
 ```bash
-python setup.py install
+python3 -m pip install --upgrade pip setuptools
+python3 -m pip install torch pybind11 --index-url https://download.pytorch.org/whl/cu126
+python3 -m pip install --no-build-isolation --editable .
 ```
 
 ### Benchmark
@@ -52,7 +54,7 @@ FlashMLA is inspired by [FlashAttention 2&3](https://github.com/dao-AILab/flash-
 
 ```bibtex
 @misc{flashmla2025,
-      title={FlashMLA: Efficient MLA decoding kernel}, 
+      title={FlashMLA: Efficient MLA decoding kernel},
       author={Jiashi Li},
       year={2025},
       publisher = {GitHub},

flash_mla/__init__.py

@@ -1,6 +1,15 @@
-__version__ = "1.0.0"
+"""FlashMLA: An efficient MLA decoding kernel for Hopper GPUs."""
 
 from flash_mla.flash_mla_interface import (
     get_mla_metadata,
     flash_mla_with_kvcache,
 )
+
+
+__all__ = [
+    "get_mla_metadata",
+    "flash_mla_with_kvcache",
+]
+
+
+__version__ = "1.0.0"

flash_mla/flash_mla_cuda.pyi

@@ -0,0 +1,19 @@
+import torch
+
+def get_mla_metadata(
+    cache_seqlens: torch.Tensor,
+    num_heads_per_head_k: int,
+    num_heads_k: int,
+) -> tuple[torch.Tensor, torch.Tensor]: ...
+def fwd_kvcache_mla(
+    q: torch.Tensor,
+    k_cache: torch.Tensor,
+    v_cache: torch.Tensor | None,
+    head_dim_v: int,
+    cache_seqlens: torch.Tensor,
+    block_table: torch.Tensor,
+    softmax_scale: float,
+    causal: bool,
+    tile_scheduler_metadata: torch.Tensor,
+    num_splits: torch.Tensor,
+) -> tuple[torch.Tensor, torch.Tensor]: ...

flash_mla/flash_mla_interface.py

@@ -2,7 +2,7 @@
 
 import torch
 
-import flash_mla_cuda
+from flash_mla import flash_mla_cuda
 
 
 def get_mla_metadata(

pyproject.toml

@@ -0,0 +1,64 @@
+# Package ######################################################################
+
+[build-system]
+requires = ["setuptools", "pybind11", "torch ~= 2.0"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "flash-mla"
+description = "FlashMLA: An efficient MLA decoding kernel for Hopper GPUs."
+readme = "README.md"
+requires-python = ">= 3.8"
+authors = [
+    { name = "FlashMLA Contributors" },
+    { name = "Jiashi Li", email = "[email protected]" },
+]
+license = { text = "MIT" }
+keywords = [
+    "Multi-head Latent Attention",
+    "MLA",
+    "Flash MLA",
+    "Flash Attention",
+    "CUDA",
+    "kernel",
+]
+classifiers = [
+    "Development Status :: 4 - Beta",
+    "License :: OSI Approved :: MIT License",
+    "Programming Language :: C++",
+    "Programming Language :: CUDA",
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.8",
+    "Programming Language :: Python :: 3.9",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
+    "Programming Language :: Python :: Implementation :: CPython",
+    "Operating System :: Microsoft :: Windows",
+    "Operating System :: POSIX :: Linux",
+    "Environment :: GPU :: NVIDIA CUDA :: 12",
+    "Intended Audience :: Developers",
+    "Intended Audience :: Education",
+    "Intended Audience :: Science/Research",
+]
+dependencies = ["torch ~= 2.0"]
+dynamic = ["version"]
+
+[project.urls]
+Homepage = "https://github.com/deepseek-ai/FlashMLA"
+Repository = "https://github.com/deepseek-ai/FlashMLA"
+"Bug Report" = "https://github.com/deepseek-ai/FlashMLA/issues"
+
+[project.optional-dependencies]
+test = ["triton"]
+benchmark = ["triton"]
+
+[tool.setuptools]
+include-package-data = true
+
+[tool.setuptools.packages.find]
+include = ["flash_mla", "flash_mla.*"]
+
+[tool.setuptools.package-data]
+flash_mla = ['*.so', '*.pyd']

setup.py

@@ -3,7 +3,7 @@
 from datetime import datetime
 import subprocess
 
-from setuptools import setup, find_packages
+from setuptools import setup
 
 from torch.utils.cpp_extension import (
     BuildExtension,
@@ -51,7 +51,7 @@ def get_features_args():
 ext_modules = []
 ext_modules.append(
     CUDAExtension(
-        name="flash_mla_cuda",
+        name="flash_mla.flash_mla_cuda",
         sources=get_sources(),
         extra_compile_args={
             "cxx": cxx_args + get_features_args(),
@@ -92,9 +92,8 @@ def get_features_args():
 
 
 setup(
-    name="flash_mla",
+    name="flash-mla",
     version="1.0.0" + rev,
-    packages=find_packages(include=['flash_mla']),
     ext_modules=ext_modules,
     cmdclass={"build_ext": BuildExtension},
 )