Can't get mypy to start from LSP-pylsp

[StabbarN]

I want to enable mypy (preferably dmypy) with Sublime and LSP-pylsp but I can't get mypy to run.
Linting and formatting in Sublime works fine.

My sublime-project file:

{
	...
	"settings":
	{
        "python_interpreter": "/Users/me/code/proj/.venv/bin/python",
	}
}

My LSP-pylsp.sublime-settings:

{
	"settings": {
        "pylsp.plugins.mypy_ls.enabled": true,
		...
    }
}

I've tried setting live_mode to true or false: "pylsp.plugins.mypy-ls.live_mode": true,

I've tried creating a mypy-ls.cfg file in my project's root with the following content but to no avail:
cat mypy-ls.cfg

{
    "enabled": True,
    "live_mode": False,
    "dmypy": True,
    "strict": False
}

Executing dmypy (and mypy) from terminal works fine.
When I have opened sublime dmypy isn't started dmypy status says "No status file found". So it seems that dmypy isn't started.

In Sublime I've set log_server": ["panel"] and checked what's sent to pylsp but it seems fine.

ls .venv
_pyenv_version bin            include        lib            pyvenv.cfg     share
which mypy
/Users/me/code/proj/.venv/bin/mypy
which dmypy
/Users/me/code/proj/venv/bin/dmypy

Please advice what more I can do to debug this.

[Richardk2n]

There seems to be some ambiguity weather mypy_ls or mypy-ls works for the config (meaning try "pylsp.plugins.mypy-ls.enabled": true,)

Can you confirm other plugins run?

Can you confirm weather mypy-ls is started and misbehaving or if it is not even started?

[StabbarN]

There seems to be some ambiguity weather mypy_ls or mypy-ls works for the config (meaning try "pylsp.plugins.mypy-ls.enabled": true,)

Changing to "pylsp.plugins.mypy-ls.enabled": true, didn't help me.

Can you confirm other plugins run?

Other plugins run excellent, such as:

        "pylsp.configurationSources": [
            "flake8"
        ],
        "pylsp.plugins.flake8.enabled": true,
        "pylsp.plugins.pyls_isort.enabled": true,
        "pylsp.plugins.pylsp_black.enabled": true,

Can you confirm weather mypy-ls is started and misbehaving or if it is not even started?

I don't know how to check if it starts. I can't see any difference after mypy-ls has been set to enabled. I want to help but don't know where to look.

[jordaneremieff]

@StabbarN What does your LSP.sublime-settings file look like? I came across this ticket when I was having similar problems getting live mode to work.

I initially tried defining the settings in LSP-pylsp.sublime-settings, but it was only when I included the settings in LSP.sublime-settings that it started working:

// Settings in here override those in "LSP/LSP.sublime-settings"
{
    "clients": {
        "pylsp": {
            "enabled": true,
            "selector": "source.python",
            "command": [
                "path/to/.venv/bin/pylsp",
            ],
            "settings": {
                "pylsp.plugins.mypy_ls.enabled": true,
                "pylsp.plugins.mypy-ls.live_mode": true
            }
        }
    }
}

I didn't really dig into the reasons why one would work but the other would not, just sharing in case this might help.

[rchl]

My sublime-project file:

I'm not sure what that python_interpreter setting is supposed to affect. It doesn't have anything to do with LSP-pylsp at least.

If you want pylsp to use your virtual environment then follow https://github.com/sublimelsp/LSP-pylsp#virtual-environments

To enable mypyls a settings like:

// Settings in here override those in "LSP-pylsp/LSP-pylsp.sublime-settings"
{
    "settings": {
        "pylsp.plugins.mypy_ls.enabled": true,
        "pylsp.plugins.mypy-ls.live_mode": false,
    }
}

should work. live_mode shouldn't be relevant but I'm fairly sure that live_mode has issues with locating types from imported files in some cases.

With a code like:

def test(a: str) -> None:
    pass


test(1)

do you not see an error like:

(remember to save the file if you have live_mode disabled.

[StabbarN]

Setup as

// Settings in here override those in "LSP/LSP.sublime-settings"
{
    "clients": {
        "pylsp": {
            "enabled": true,
            "selector": "source.python",
            "command": [
                "path/to/.venv/bin/pylsp",
            ],
            "settings": {
                "pylsp.plugins.mypy_ls.enabled": true,
                "pylsp.plugins.mypy-ls.live_mode": true
            }
        }
    }
}

seems to work after a quick test.

I've a lot of other stuffs going right now. I'll hopefully do more testing and verification in a few days.
Thanks for your help so far!

[rchl]

The only reason I can think of why this would work better for you is because you are running pylsp from your virtual environment. When using the LSP-pylsp package, the pylsp runs from package storage directory somewhere in user home directory. That's why when using LSP-pylsp you are supposed to follow https://github.com/sublimelsp/LSP-pylsp#virtual-environments to configure your project to use the python venv.

[Richardk2n]

It looks like you found a way, that works for you, and mypy-ls did not cause this issue. Is that correct? (Meaning can I close this now?)

[StabbarN]

I haven't verified it yet but my problem is probably that I haven't installed Python LSP Server manually as described at https://yeray.dev/python/setting-up-sublime-text-4-for-python#manual-setup

I was planning to install it manually and then close this issue.

Yes, this issue can be closed.

Thank you for all responses!

[rchl]

There was a recent related change made that might have fixed the original issues.