vimPlugins.chadtree: Missing deps or broken?

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Has anyone got chadtree working? It appears to assume the role of a package manager to create and manage its own Python virtual environment, that the user is supposed to initialize with :CHADdeps command.

Using plugin and Neovim from NIxpkgs unstable it fails during startup:

Please update dependencies using :CHADdeps
-
-
Dependencies will be installed privately inside `chadtree/.vars`
`rm -rf chadtree/` will cleanly remove everything

:CHADdeps predictably fails when it tries to write to /nix/store:

Traceback (most recent call last):
  File "/nix/store/rppr9s436950i1dlzknbmz40m2xqqnxc-python3-3.9.9/lib/python3.9/runpy.py", line 197, in _run_module_as_main
    return _run_code(code, main_globals, None,
  File "/nix/store/rppr9s436950i1dlzknbmz40m2xqqnxc-python3-3.9.9/lib/python3.9/runpy.py", line 87, in _run_code
    exec(code, run_globals)
  File "/nix/store/jr0lk415f9hvk5w9slhkpgmnhdnv6bw0-vimplugin-chadtree-2021-12-22/chadtree/__main__.py", line 82, in <module>
    EnvBuilder(
  File "/nix/store/rppr9s436950i1dlzknbmz40m2xqqnxc-python3-3.9.9/lib/python3.9/venv/__init__.py", line 67, in create
    context = self.ensure_directories(env_dir)
  File "/nix/store/rppr9s436950i1dlzknbmz40m2xqqnxc-python3-3.9.9/lib/python3.9/venv/__init__.py", line 116, in ensure_directories
    create_if_needed(env_dir)
  File "/nix/store/rppr9s436950i1dlzknbmz40m2xqqnxc-python3-3.9.9/lib/python3.9/venv/__init__.py", line 105, in create_if_needed
    os.makedirs(d)
  File "/nix/store/rppr9s436950i1dlzknbmz40m2xqqnxc-python3-3.9.9/lib/python3.9/os.py", line 215, in makedirs
    makedirs(head, exist_ok=exist_ok)
  File "/nix/store/rppr9s436950i1dlzknbmz40m2xqqnxc-python3-3.9.9/lib/python3.9/os.py", line 225, in makedirs
    mkdir(name, mode)
OSError: [Errno 30] Read-only file system: '/nix/store/jr0lk415f9hvk5w9slhkpgmnhdnv6bw0-vimplugin-chadtree-2021-12-22/.vars'

Since chadtree was added to Nixpkgs I guess someone made it work. I haven’t looked deeply at chadtree but others seem to have the same problem: Use dependencies outside of `chadtree/.vars` · Issue #271 · ms-jpq/chadtree · GitHub

@cideM, you (?) added chadtree in vimPlugins.chadtree: init at 2021-01-21 · NixOS/nixpkgs@c88e459 · GitHub do you have a working configuration?

[cideM]

When I added it the maintainer added a commit that would make it work with XDG_* spec so as long as you have this set it should not install dependencies into /nix/store. Here’s the issue I created back then Allow changing `runtime` dir · Issue #110 · ms-jpq/chadtree · GitHub maybe something broke since then?

It was always my plan to package it properly but I failed to do so back then and I don’t think I have the motivation to give it another go with the state of Python packaging in general and the many moving parts here

How to package Neovim plugin with Python application

I’m trying to package GitHub - ms-jpq/coq_nvim: Fast as FUCK nvim completion. SQLite, concurrent scheduler, hundreds of hours of optimization. The python package lists a few requirements, which can be installed imperatively through a Neovim command :COQDeps but I’d like to make things more Nix-y and have Nix handle the python requirements. Important disclaimer: I’m not the author of the plugin and I know nothing about Python in general. Here’s what I tried so far: GitHub - cideM/coq-nvim-nix …

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Many thanks, I’ll have a look.

@cideM

It was always my plan to package it properly but I failed to do so back then and I don’t think I have the motivation to give it another go with the state of Python packaging in general and the many moving parts here

Yeah, I got the same feeling after giving it a go.