error when buildinging mlk algebra using osqp-python

[rockyb3]

python: 3.11
osqp: 1.0.0b1
osqp python: master branch
mkl: installed by "conda install mkl"

# Name                    Version                   Build  Channel

mkl                       2024.2.2            ha957f24_16 
mkl-devel                 2024.2.2            ha770c72_16 
mkl-include               2024.2.2            ha957f24_16 
mkl-service               2.4.2           py311h200a580_0 

environment variables:
OSQP_ALGEBRA_BACKEND=mkl
MKL_ROOT = "/home/username/.conda/envs/envname/lib"

I follow the doc https://osqp.org/docs/contributing/python.html#:~:text=%27builtin%27%5D-,Wrappers%20for%20mkl%20algebra,%C2%B6,-For%20building%20Python
and manually change the pyproject.toml file:

[tool.scikit-build.cmake.define]
OSQP_ALGEBRA_BACKEND = "mkl"
OSQP_EXT_MODULE_NAME = "ext_mkl"
CMAKE_OSX_ARCHITECTURES = {env="CMAKE_OSX_ARCHITECTURES"}

But got the error:

CMake Error at /tmp/tmpomj_tvpy/build/_deps/osqp-src/algebra/mkl/CMakeLists.txt:36 (find_package):
  Found package configuration file:
    /home/username/.conda/envs/envname/lib/cmake/mkl/MKLConfig.cmake
  but it set MKL_FOUND to FALSE so package "MKL" is considered to be NOT
  FOUND.  Reason given by package:

  The required variable MKL_VERSION_H has an invalid value
  "MKL_VERSION_H-NOTFOUND".

-- Configuring incomplete, errors occurred!
*** CMake configuration failed