Failed to load python host
benzanol opened this issue · comments
When I try to open the Mundo window, I get the error
Failed to load python host. You can try to see what happened by starting nvim with $NVIM_PYTHON_LOG_FILE set and opening the generated log file. Also, the host stderr is available in messages.
I tried setting $NVIM_PYTHON_LOG_FILE, but the file remains empty. I also tried creating a completely blank config with nothing but Mundo to make sure nothing I had was conflicting with it, as well as reinstalling the plugin, but I get the same error.
Sorry I failed to reproduce your error. I just tried mundo with nvim and it worked fine. May I ask your development environment information to reproduce this error?
For example, this is my environment:
$ uname -a
Linux redacted 4.19.104-microsoft-standard #1 SMP Wed Feb 19 06:37:35 UTC 2020 x86_64 GNU/Linux
$ cat /etc/issue
Debian GNU/Linux 10 \n \l
$ nvim --version | head -n3
NVIM v0.4.4
Build type: RelWithDebInfo
LuaJIT 2.0.5
$ python3 --version
Python 3.7.3
$ python3 -m pip show pynvim | head -n2
Name: pynvim
Version: 0.4.2Hi, thanks for the quick response.
Here's the information you asked for
$uname -a
Linux localhost.localdomain 5.8.15-301.fc33.x86_64 #1 SMP Thu Oct 15 16:58:06 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
OS: Fedora 33
$ cat /etc/issue
\S
Kernel \r on an \m (\l)
$ nvim --version | head -n3
NVIM v0.4.4
Build type: RelWithDebInfo
LuaJIT 2.1.0-beta3
$ python3 --version
python 3.9.0
Running python3 -m pip show pynvim | head -n2 I get this error message
Name: pynvim
Version: 0.4.2
ERROR: Pipe to stdout was broken
Exception ignored in: <_io.TextIOWrapper name='<stdout>' mode='w' encoding='utf-8'>
BrokenPipeError: [Errno 32] Broken pipe
I also realized when testing a few things that if I use the -u flag when opening nvim Mundo opens and functions just fine, even if I specify the path to the default init.vim file. So if nothing else I can just lias nvim to have the flag specified in my bashrc.
This is weird. Our nvim and pynvim version is same. Do other neovim plugins with python extensions works fine? I think this is an issue of neovim not this plugin.
I don't know of any other plugins that I use that use python, so it probably is a neovim issue. For now it works fine if I jus alias nvim to nvim - u [config path] so I will just stick to that.
Can you run :checkhealth and verify that you have a python3 provider configured?
Yes, the python3 host is installed.
## Python 3 provider (optional)
- INFO: Multiple python3 executables found. Set `g:python3_host_prog` to avoid surprises.
- INFO: Executable: /usr/bin/python3
- INFO: Other python executable: /bin/python3
- INFO: Python version: 3.8.5
- INFO: pynvim version: 0.4.2
- OK: Latest pynvim is installed.
I have the same problem. I am on Fedora as well and use miniconda but I tried it without the virtualenv from conda with the system python.
This is the error when I try to toggle:
function mundo#MundoToggle[1]..<SNR>141_MundoToggle[4]..<SNR>141_MundoOpen[11]..<SNR>141_MundoSet
upPythonPath[3]..<SNR>141_MundoPython[1]..provider#python#Call[9]..remote#host#Require[10]..provi
der#pythonx#Require[13]..provider#Poll, line 4
Vim(if):Error invoking 'poll' on channel 8:^@ch 8 was closed by the client
Failed to load python host. You can try to see what happened by starting nvim with $NVIM_PYTHON_L
OG_FILE set and opening the generated log file. Also, the host stderr is available in messages.
Press ENTER or type command to continue
I also tried setting that var but nothing was written (I am using fish but tried with bash as well).
❯ uname -a
Linux redacted 5.10.16-200.fc33.x86_64 #1 SMP Sun Feb 14 03:02:32 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
~
❯ cat /etc/issue
\S
Kernel \r on an \m (\l)
~
❯ nvim --version | head -n3
NVIM v0.4.4
Build type: RelWithDebInfo
LuaJIT 2.1.0-beta3
~
❯ python3 --version
Python 3.8.5
~
❯ python3 -m pip show pynvim | head -n2
Name: pynvim
Version: 0.4.2
ERROR: Pipe to stdout was broken
Exception ignored in: <_io.TextIOWrapper name='<stdout>' mode='w' encoding='utf-8'>
BrokenPipeError: [Errno 32] Broken pipe
And when I do checkhealth, the python3 provider is:
## Python 3 provider (optional)
- INFO: Using: g:python3_host_prog = "/usr/bin/python3"
- INFO: Executable: /usr/bin/python3
- INFO: Python version: 3.9.1
- INFO: pynvim version: 0.4.2
- OK: Latest pynvim is installed.
In my init.vim I set my undodir to be in the default nvim dir, could that be it?
set undofile " Maintain undo history between sessions
set undodir=~/.local/share/nvim/undo
I am also using the thaerkh/vim-workspace plugin with this config, but afaik this should not collide.
let g:workspace_session_directory = $home . '/.local/share/nvim/sessions/'
let g:workspace_session_disable_on_args = 1
let g:workspace_persist_undo_history = 0
let g:workspace_autosave = 0
It is unlikely that vim-mundo is the cause of the Python load failure. This is most likely caused by the compilation flags of your vim distribution.
It is unlikely that vim-mundo is the cause of the Python load failure. This is most likely caused by the compilation flags of your vim distribution.
Okay, too bad then.
After digging around in my configuration, the culprit is g:python_host_prog. I guess if your system doesn't have python2 installed then that gets in the way.