conda镜像问题，导致repeatmasker安装的困扰

以下为清华镜像，但是指定channels时，conda只会在指定的镜像找pkg，比如bioconda
'''
channels:

• defaults
  show_channel_urls: true
  default_channels:
• https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
• https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/r
• https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/msys2
  custom_channels:
  conda-forge: https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud
  msys2: https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud
  bioconda: https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud
  menpo: https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud
  pytorch: https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud
  pytorch-lts: https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud
  simpleitk: https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud
  deepmodeling: https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/
  '''
  在安装某些包时，如'conda install bioconda::repeatmasker'，同时需要'conda-forge'，所以只指定bioconda时无法安装，则需加上-c conda-forge

或者改.condarc
'''
channels:

• https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/pytorch/
• https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/menpo/
• https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/bioconda/
• https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/msys2/
• https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/conda-forge/
• https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main/
• https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/
  show_channel_urls: true
  default_channels:
• https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
• https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/r
• https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/msys2
  custom_channels:
  conda-forge: https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud
  msys2: https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud
  bioconda: https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud
  menpo: https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud
  pytorch: https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud
  pytorch-lts: https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud
  simpleitk: https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud
  deepmodeling: https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/

#conda安装repeatmasker之后不要在环境变量里添加$PERL5LIB会和conda安装的perl冲突