Troubleshooting Neovim Plugin With Basedpyright And Nixd

by Alex Johnson 57 views

Are you experiencing issues with your Neovim plugin not showing up when using basedpyright, despite it working perfectly fine with nixd in Nix files? This is a common problem that many Neovim users face, especially when configuring their editors with Nix and Nixvim. In this comprehensive guide, we'll dive deep into the potential causes and provide you with step-by-step solutions to get your plugin up and running smoothly. Let’s get started and ensure your Neovim setup is working as expected.

Understanding the Problem: Plugin Behavior with Nixd and Basedpyright

The core issue here is the inconsistency in plugin behavior between different environments within Neovim. Specifically, the user reports that a particular plugin (tiny-inline-diagnostic.nvim) functions correctly when working with Nix files using nixd (the Nix language server), but fails to appear when using basedpyright (a Python language server). This discrepancy suggests that the problem isn't with the plugin itself, but rather with how Neovim is configured to load and utilize plugins in different contexts. To effectively troubleshoot, we need to consider several factors, including LSP configurations, plugin loading mechanisms, and environment-specific settings.

Key Areas to Investigate

  1. LSP Configuration: Language Server Protocol (LSP) configurations dictate how Neovim interacts with language-specific tools like nixd and basedpyright. If the plugin relies on LSP features (such as diagnostics or code actions), incorrect LSP setup can prevent it from functioning correctly.
  2. Plugin Loading: Neovim uses various methods to load plugins, including built-in package management and third-party plugin managers like vim-plug or lazy.nvim. Issues in how the plugin is loaded or initialized can lead to unexpected behavior.
  3. Environment-Specific Settings: Nixvim, being a Nix-based Neovim configuration, introduces another layer of complexity. Environment-specific settings, such as those defined in nix.conf, might affect plugin availability.

By systematically examining these areas, we can pinpoint the root cause of the problem and implement the necessary fixes. Let's start by reviewing the user's configuration to identify potential issues.

Analyzing the Neovim Configuration

To effectively troubleshoot, let’s dissect the provided init.lua and nix.conf files. These files contain the core configurations for Neovim and Nixvim, respectively. Understanding the structure and settings within these files is crucial for diagnosing the issue. We'll break down each section, highlighting key configurations and potential problem areas.

Examining init.lua

The init.lua file serves as Neovim's primary configuration script. It sets global options, loads plugins, configures Language Server Protocol (LSP) clients, and defines key mappings. Let’s examine the key sections of the user’s init.lua:

Global and Options Setup

The initial section sets up global variables and Neovim options. This includes settings like mapleader, clipboard, laststatus, and others. These settings define the basic behavior of Neovim.

-- Set up globals
do
    local nixvim_globals = {
        mapleader = " ",
        maplocalleader = ",",
        vimtex_callback_progpath = "nvim",
        vimtex_enabled = true,
        vimtex_view_method = "general",
    }

    for k, v in pairs(nixvim_globals) do
        vim.g[k] = v
    end
end

-- Set up options
do
    local nixvim_options = {
        clipboard = "unnamedplus",
        laststatus = 3,
        linebreak = true,
        number = true,
        relativenumber = true,
        splitkeep = "screen",
        termguicolors = true,
        wrap = false,
        wrapmargin = 2,
    }

    for k, v in pairs(nixvim_options) do
        vim.opt[k] = v
    end
end

These settings appear to be standard and shouldn't directly affect plugin loading or LSP behavior.

Plugin Setup

The next part of the configuration involves setting up various plugins. The user is using lazy.nvim under the hood with Nixvim. Plugins like catppuccin, nvim-web-devicons, which-key, ts-comments, toggleterm, telescope, snacks, presence, nvim-autopairs, neoscroll, neorg, neo-tree, markview, lualine, img-clip, gitsigns, edgy, and blink-cmp are being configured.

require("catppuccin").setup({ flavour = "mocha", transparent_background = true })

vim.diagnostic.config({ virtual_lines = { enable = true, severity_sort = true }, virtual_text = false })

vim.cmd([[let $BAT_THEME = 'catppuccin'

colorscheme catppuccin
]])
require("nvim-web-devicons").setup({})

require("which-key").setup({})

require("ts-comments").setup({})

vim.opt.runtimepath:prepend(vim.fs.joinpath(vim.fn.stdpath("data"), "site"))
require("nvim-treesitter.configs").setup({
    highlight = { enable = true },
    parser_install_dir = vim.fs.joinpath(vim.fn.stdpath("data"), "site"),
})

require("toggleterm").setup({ open_mapping = [[<c-\>]] })

require("tiny-inline-diagnostic").setup({
    multilines = { enabled = true },
    options = { use_icons_from_diagnostic = false },
    preset = "ghost",
    virt_texts = { priority = 2048 },
})

require("telescope").setup({})

local __telescopeExtensions = {}
for i, extension in ipairs(__telescopeExtensions) do
    require("telescope").load_extension(extension)
end

require("snacks").setup({
    animate = { enabled = true },
    bigfile = { enabled = true },
    dashboard = { enabled = false },
    image = { enabled = true },
    indent = { enabled = true },
    input = { enabled = true },
    lazygit = { enabled = true },
    picker = { enabled = true },
    quickfile = { enabled = true },
    scroll = { enabled = false },
    statuscolumn = { enabled = true },
    terminal = { enabled = true },
})

require("presence").setup({})

require("nvim-autopairs").setup({})

require("neoscroll").setup({
    cursor_scrolls_alone = true,
    easing_function = "quadratic",
    hide_cursor = true,
    mappings = { "<C-u>", "<C-d>", "<C-b>", "<C-f>", "<C-y>", "<C-e>", "zt", "zz", "zb" },
    respect_scrolloff = false,
    stop_eof = true,
})

require("neorg").setup({
    ["core.concealer"] = { config = { icon_preset = "varied" } },
    ["core.defaults"] = {},
    ["core.dirman"] = { config = { workspaces = { home = "~/notes/home", work = "~/notes/work" } } },
})

require("neo-tree").setup({})

local presets = require("markview.presets")

vim.g.markview_alpha = 0.5
vim.g.markview_dark_bg = "#1e1e2e" -- This is default for `catppuccin`

require("markview").setup({
    markdown = {
        headings = presets.headings.slanted,
        horizontal_rules = presets.horizontal_rules.arrowed,
        tables = presets.tables.rounded,
    },
})

require("lualine").setup({})

require("img-clip").setup({})

require("gitsigns").setup({})

require("edgy").setup({
    bottom = { "toggleterm" },
    left = { { ft = "neo-tree" } },
    options = { bottom = { size = 20 }, left = { size = 20 } },
    wo = { winbar = true, winfixheight = false, winfixwidth = false },
})

require("blink-cmp").setup({ keymap = { preset = "enter" } })

The setup for tiny-inline-diagnostic looks correct, with configurations for multiline diagnostics, icon usage, preset, and virtual text priority.

Key Mappings

The key mappings section defines custom shortcuts for various actions. This section does not directly impact plugin loading but can influence how plugins are used.

-- Set up keybinds
do
    local __nixvim_binds = {
        {
            action = ":lua vim.diagnostic.config({ virtual_lines = not vim.diagnostic.config().virtual_lines })<CR>",
            key = "<leader>l",
            mode = "",
            options = { noremap = true, silent = true },
        },
        { action = ":lua vim.diagnostic.hide()", key = "K", mode = "", options = { expr = true } },
        {
            action = "v:count == 0 ? 'gj' : 'j'",
            key = "j",
            mode = "",
            options = { expr = true, noremap = true, silent = true },
        },
        {
            action = "v:count == 0 ? 'gk' : 'j'",
            key = "k",
            mode = "",
            options = { expr = true, silent = true, noremap = true },
        },
        {
            action = ":lua Snacks.terminal.open('"' .. vim.fn.expand(\"%:p\") .. '"')\n",
            key = "<leader>x",
            mode = "",
            options = { desc = "open terminal using Snacks" },
        },
        { action = "     \t:lua Neotree\n\t", key = "<leader>t", mode = "" },
        { action = ":lua Snacks.picker.files()<cr>", key = "<C-p>", mode = "" },
        { action = ":lua Snacks.picker.grep()<cr>", key = "<C-l>", mode = "" },
    }
    for i, map in ipairs(__nixvim_binds) do
        vim.keymap.set(map.mode, map.key, map.action, map.options)
    end
end

LSP Configuration

This is a crucial section for troubleshooting the issue. The user enables LSP for basedpyright, marksman, and nixd. It’s essential to ensure these configurations are correctly set up.

-- LSP
do
    vim.lsp.inlay_hint.enable(true)
    vim.lsp.enable("basedpyright")
    vim.lsp.enable("marksman")
    vim.lsp.config("nixd", { cmd = { "nixd", "--semantic-tokens=true" } })
    vim.lsp.enable("nixd")
end

A potential issue might be the direct use of vim.lsp.enable and vim.lsp.config. With modern LSP management, it’s generally recommended to use lspconfig for a more consistent and manageable setup. The absence of specific configurations for basedpyright might be a contributing factor.

Highlight Groups

This section customizes highlight groups, which are unlikely to affect plugin loading or LSP behavior.

-- Highlight groups
do
    local highlights = {
        EdgyNormal = { bg = "none", blend = 100, ctermbg = "none" },
        NeoTreeNormal = { bg = "none", blend = 100, ctermbg = "none" },
        Normal = { bg = "none", blend = 100, ctermbg = "none" },
        NormalNC = { bg = "none", blend = 100, ctermbg = "none" },
        fzf = { bg = "none", blend = 100, ctermbg = "none" },
    }

    for k, v in pairs(highlights) do
        vim.api.nvim_set_hl(0, k, v)
    end
end

Examining nix.conf

The nix.conf file defines the Nixvim configuration, specifying enabled plugins, LSP settings, key mappings, and other configurations. This file provides a declarative way to manage Neovim settings within the Nix ecosystem.

Nixvim Configuration Structure

The nix.conf file is structured to define various aspects of the Neovim environment, including imports, programs, colorschemes, plugins, LSP settings, and more. Understanding this structure is crucial for identifying configuration discrepancies.

Plugin Declarations

The plugins section lists all enabled plugins and their settings. The tiny-inline-diagnostic plugin is enabled with specific settings for multiline diagnostics, icon usage, preset, and virtual text priority. This section confirms that the plugin is declared and enabled in the Nixvim configuration.

tiny-inline-diagnostic = {
        enable = true;
        settings = {
          multilines = {
            enabled = true;
          };
          options = {
            use_icons_from_diagnostic = false;
            # filter_diagnostics_by_severity = false;
          };
          preset = "ghost";
          virt_texts = {
            priority = 2048;
          };
        };
      };

LSP Server Configuration

The lsp.servers section configures the Language Servers. Here, basedpyright and nixd are enabled. The nixd server has specific settings defined, while basedpyright appears to rely on default settings. This discrepancy might be a contributing factor to the issue.

lsp = {
      inlayHints.enable = true;
      servers = {
        marksman = {
          enable = true;
        };
        ruff = {
          enable = false;
        };
        basedpyright = {
          enable = true;
        };
        nixd = {
          enable = true;
          settings = {
            cmd = [
              "nixd"
              "--semantic-tokens=true"
            ];
          };
        };
      };
    };

Keymap Declarations

The keymaps section defines key mappings. While key mappings themselves are unlikely to cause plugin loading issues, conflicts or missing mappings can affect plugin usability.

Identifying Potential Issues

Based on the analysis of init.lua and nix.conf, several potential issues can be identified:

  1. Inconsistent LSP Configuration: The basedpyright LSP server lacks specific configuration settings in both init.lua and nix.conf, while nixd has explicit settings. This inconsistency might cause basedpyright to not initialize correctly or to not provide the necessary diagnostic information for tiny-inline-diagnostic to function.
  2. Direct LSP Enabling: The init.lua uses vim.lsp.enable directly, which is less flexible and maintainable than using lspconfig. Modern Neovim setups often prefer lspconfig for managing LSP servers.
  3. Missing Filetype Association: It's possible that tiny-inline-diagnostic isn't correctly associated with Python files, which would explain why it works with Nix files but not with Python files.

Step-by-Step Troubleshooting Guide

Now that we've analyzed the configuration and identified potential issues, let’s move on to the troubleshooting steps. We'll address each potential problem area systematically to resolve the issue.

Step 1: Install and Configure lspconfig for basedpyright

First, we'll transition to using lspconfig for managing the basedpyright LSP server. This approach provides more flexibility and control over server settings. If you haven't already, ensure lspconfig is installed.

Install lspconfig

If you're using a plugin manager like lazy.nvim, add the following to your plugin list in nix.conf:

 lspconfig.enable = true;

Configure basedpyright with lspconfig

In your init.lua, replace the direct `vim.lsp.enable(