ffn包的不可安装问题

Question

jupyter notebook里没有预装ffn包，发现ffn不是自动预装的包

import ffn
---------------------------------------------------------------------------
ModuleNotFoundError                       Traceback (most recent call last)
<ipython-input-1-9d4b951d98c0> in <module>
----> 1 import ffn

ModuleNotFoundError: No module named 'ffn'

随后我到anaconda的prompt界面进行安装
一般来说使用conda install ffn就可以直接自动安装，但是prompt界面的反馈是无法安装

conda install ffn
Collecting package metadata (current_repodata.json): done
Solving environment: failed with initial frozen solve. Retrying with flexible solve.
Collecting package metadata (repodata.json): done
Solving environment: failed with initial frozen solve. Retrying with flexible solve.

PackagesNotFoundError: The following packages are not available from current channels:

  - ffn

Current channels:

  - https://repo.anaconda.com/pkgs/main/win-64
  - https://repo.anaconda.com/pkgs/main/noarch
  - https://repo.anaconda.com/pkgs/r/win-64
  - https://repo.anaconda.com/pkgs/r/noarch
  - https://repo.anaconda.com/pkgs/msys2/win-64
  - https://repo.anaconda.com/pkgs/msys2/noarch

To search for alternate channels that may provide the conda package you're
looking for, navigate to

    https://anaconda.org

and use the search bar at the top of the page.

所以问题在哪呢，ffn为什么安装不上？