rnvimr不能使用正确的python版本

[10ve]

• nvim --version:

  
  NVIM v0.5.0-dev+82100a6bd
  Build type: Release
  LuaJIT 2.1.0-beta3
  Compilation: /usr/bin/clang -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=1 -DNDEBUG -Wall -Wextra -pedantic -Wno-unused-parameter -Wstrict-prototypes -std=gnu99 -Wshadow -Wconversion -Wmissing-prototypes -Wimplicit-fallthrough -Wvla -fstack-protector-strong -fno-common -fdiagnostics-color=auto -DINCLUDE_GENERATED_DECLARATIONS -D_GNU_SOURCE -DNVIM_MSGPACK_HAS_FLOAT32 -DNVIM_UNIBI_HAS_VAR_FROM -DMIN_LOG_LEVEL=3 -I/tmp/neovim-20201214-72269-xbo28y/build/config -I/tmp/neovim-20201214-72269-xbo28y/src -I/usr/local/include -I/tmp/neovim-20201214-72269-xbo28y/deps-build/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX11.0.sdk/usr/include -I/usr/local/opt/gettext/include -I/tmp/neovim-20201214-72269-xbo28y/build/src/nvim/auto -I/tmp/neovim-20201214-72269-xbo28y/build/include
  编译者 yang@promote.cache-dns.local

Features: +acl +iconv +tui See ":help feature-compile"

 系统 vimrc 文件: "$VIM/sysinit.vim"
     $VIM 预设值: "/usr/local/Cellar/neovim/HEAD-82100a6/share/nvim"

- Operating system/version:
`Darwin promote.cache-dns.local 20.1.0 Darwin Kernel Version 20.1.0: Sat Oct 31 00:07:11 PDT 2020; root:xnu-7195.50.7~2/RELEASE_X86_64 x86_64`
- `nvim +'checkhealth rnvimr'`: 

health#rnvimr#check

OS

• OK: Name: Mac

  Ranger

  • OK: Version: ranger 1.9.3

  Python

  • ERROR: Version: 2.7.16 (default, Oct 30 2020, 02:15:49) [GCC Apple LLVM 12.0.0 (clang-1200.0.30.4) [+internal-os, ptrauth-isa=sign+stri
    • ADVICE:
    • Python version inside Ranger must be greater than 3
    • Please install Ranger properly

  Pynvim

  • OK: Version: 0.4.2

  Ueberzug (optional)

  • INFO: Ueberzug is not support for Mac

  RPC

  • ERROR: RPC: timeout 3s

    **Describe the bug**
    系统默认的python为python2.7，已经ln -s homebrew 安装的python3到/usr/local/bin/下，在zsh里也可以默认使用，但是rnvimr不能正常识别

    ❯ where python /usr/local/bin/python /usr/bin/python ❯ python --version Python 3.9.1

**To Reproduce using `nvim -u mini.vim`**

`cat mini.vim`
```vim
" use your plugin manager, here is `vim-plug`
call plug#begin('~/.config/nvim/plugged')
Plug 'kevinhwang91/rnvimr'
let g:rnvimr_vanilla = 1
tnoremap <silent> <M-i> <C-\><C-n>:RnvimrResize<CR>
nnoremap <silent> <M-o> :RnvimrToggle<CR>
tnoremap <silent> <M-o> <C-\><C-n>:RnvimrToggle<CR>
call plug#end()

Steps to reproduce the behavior: 1.checkhealth 2.

health#rnvimr#check
========================================================================
## OS
  - OK: Name: Mac

## Ranger
  - OK: Version: ranger 1.9.3

## Python
  - ERROR: Version: 2.7.16 (default, Oct 30 2020, 02:15:49) [GCC Apple LLVM 12.   0.0 (clang-1200.0.30.4) [+internal-os, ptrauth-isa=sign+stri
    - ADVICE:
      - Python version inside Ranger must be greater than 3
      - Please install Ranger properly

## Pynvim
  - OK: Version: 0.4.2

## Ueberzug (optional)
  - INFO: Ueberzug is not support for Mac

## RPC
  - ERROR: RPC: timeout 3s

Expected behavior 正确识别python路径，或提供变量自己修改路径

Screenshots

[10ve]

在非mini.vim下，还使用这两个可能有影响的变量

let g:loaded_python_provider = 0
let g:python3_host_prog='/usr/local/bin/python3'

pip3 install ranger-fm 后就可以了 不好意思，没认真读readme