fix setup

Author: qinxuye

setup.cfg

@@ -103,6 +103,7 @@ all =
     optimum
     outlines==0.0.34  # sglang errored for outlines > 0.0.34
     sglang[all] ; sys_platform=='linux'
+    mlx-lm ; sys_platform=='darwin' and platform_machine == 'arm64'
     attrdict  # For deepseek VL
     timm>=0.9.16  # For deepseek VL
     torchvision  # For deepseek VL
@@ -143,6 +144,8 @@ vllm =
     vllm>=0.2.6
 sglang =
     sglang[all]
+mlx =
+    mlx-lm
 embedding =
     sentence-transformers>=2.7.0
 rerank =