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mason-nvim-dap bridges mason.nvim with the nvim-dap plugin - making it easier to use both plugins together.

Introduction

mason-nvim-dap.nvim closes some gaps that exist between mason.nvim and nvim-dap. Its main responsibilities are:

provide extra convenience APIs such as the :DapInstall command
allow you to (i) automatically install, and (ii) automatically set up a predefined list of adapters
translate between dap adapter names and mason.nvim package names (e.g. python <-> debugpy)

It is recommended to use this extension if you use mason.nvim and nvim-dap. (This plugin won't really work without them)

**Note: this plugin uses the dap adapter names in the APIs it exposes - not mason.nvim package names.

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Requirements

neovim >= 0.7.0
mason.nvim
nvim-dap

Installation

Lazy

{
    "williamboman/mason.nvim",
    "mfussenegger/nvim-dap",
    "jay-babu/mason-nvim-dap.nvim",
}

Packer

use {
    "williamboman/mason.nvim",
    "mfussenegger/nvim-dap",
    "jay-babu/mason-nvim-dap.nvim",
}

Setup

It's important that you set up the plugins in the following order:

mason.nvim
mason-nvim-dap.nvim

Pay extra attention to this if you're using a plugin manager to load plugins for you, as there are no guarantees it'll load plugins in the correct order unless explicitly instructed to.

require("mason").setup()
require("mason-nvim-dap").setup()

Refer to the Configuration section for information about which settings are available.

Commands

:DapInstall [<adapter>...] - installs the provided adapter
:DapUninstall <adapter> ... - uninstalls the provided adapter

Configuration

You may optionally configure certain behavior of mason-nvim-dap.nvim when calling the .setup() function. Refer to the default configuration for a list of all available settings.

Example:

require("mason-nvim-dap").setup({
    ensure_installed = { "python", "delve" }
})

Default configuration

local DEFAULT_SETTINGS = {
    -- A list of adapters to install if they're not already installed.
    -- This setting has no relation with the `automatic_installation` setting.
    ensure_installed = {},

	-- NOTE: this is left here for future porting in case needed
	-- Whether adapters that are set up (via dap) should be automatically installed if they're not already installed.
	-- This setting has no relation with the `ensure_installed` setting.
	-- Can either be:
	--   - false: Daps are not automatically installed.
	--   - true: All adapters set up via dap are automatically installed.
	--   - { exclude: string[] }: All adapters set up via mason-nvim-dap, except the ones provided in the list, are automatically installed.
	--       Example: automatic_installation = { exclude = { "python", "delve" } }
    automatic_installation = false,

    -- See below on usage
    handlers = nil,
}

Handlers usage (Automatic Setup)

The handlers table provides a dynamic way of setting up sources and any other logic needed; it can also do that during runtime. To override the fallback handler put your custom one as first list element in the table. To override any other handler pass your custom function to the respective key. Handler functions take one argument - the default config table, which you customize to your liking:

local config = {
	name -- adapter name

	-- All the items below are looked up by the adapter name.
	adapters -- https://github.com/jay-babu/mason-nvim-dap.nvim/blob/main/lua/mason-nvim-dap/mappings/adapters.lua
	configurations -- https://github.com/jay-babu/mason-nvim-dap.nvim/blob/main/lua/mason-nvim-dap/mappings/configurations.lua
	filetypes -- https://github.com/jay-babu/mason-nvim-dap.nvim/blob/main/lua/mason-nvim-dap/mappings/filetypes.lua
}

Note, especially if you are migrating from setup_handlers(), that you have to call require('mason-nvim-dap').default_setup(config) with your customized config table in all your handler overrides!

Basic Customization

require ('mason-nvim-dap').setup({
    ensure_installed = {'stylua', 'jq'},
    handlers = {}, -- sets up dap in the predefined manner
})

Advanced Customization

require ('mason-nvim-dap').setup({
    ensure_installed = {'stylua', 'jq'},
    handlers = {
        function(config)
          -- all sources with no handler get passed here

          -- Keep original functionality
          require('mason-nvim-dap').default_setup(config)
        end,
        python = function(config)
            config.adapters = {
	            type = "executable",
	            command = "/usr/bin/python3",
	            args = {
		            "-m",
		            "debugpy.adapter",
	            },
            }
            require('mason-nvim-dap').default_setup(config) -- don't forget this!
        end,
    },
})

Available Dap Adapters

See https://github.com/jay-babu/mason-nvim-dap.nvim/blob/main/lua/mason-nvim-dap/mappings/source.lua

	-- The first three options are required by nvim-dap
	type = 'python', -- the type here established the link to the adapter definition: `dap.adapters.python`
	request = 'launch',
	name = 'Python: Launch file',
	program = '${file}', -- This configuration will launch the current file if used.
	pythonPath = venv_path and (venv_path .. '/bin/python') or nil,

	name = 'Node2: Attach to process',
	type = 'node2',
	request = 'attach',
	processId = require('dap.utils').pick_process,

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mason-nvim-dap.nvim's Introduction

Introduction

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Requirements

Installation

Setup

Commands

Configuration

Default configuration

Handlers usage (Automatic Setup)

Basic Customization

Advanced Customization

Available Dap Adapters

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