解决conda install报错Solving environment: failed with initial frozen solve. Retrying with flexible solve

一、问题描述

如题，在conda install annoy时报错找不到对应包：

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:
  - annoy

二、解决方法

可以直接去 https://www.lfd.uci.edu/~gohlke/pythonlibs/#pyhook
找对应的这个python库，然后把对应的whl文件下载到本地，在terminal找到该whl文件所在路径位置后，直接conda install X.whl。

PS：在kaggle打比赛中比如pycocotools库，找不到对应的whl文件，但可以下载对应的.tar.gz安装包，也是同样对该文件conda install即可。