Pi_health

Nvim :help pages, generated from source using the tree-sitter-vimdoc parser.


Author: TJ DeVries <[email protected]>

Introduction

health.vim is a minimal framework to help users troubleshoot configuration and any other environment conditions that a plugin might care about. Nvim ships with healthchecks for configuration, performance, python support, ruby support, clipboard support, and more.
To run all healthchecks, use:
:checkhealth
Plugin authors are encouraged to write new healthchecks. health-dev

Commands health-commands

:che :checkhealth :CheckHealth :che[ckhealth] Run all healthchecks. E5009 Nvim depends on $VIMRUNTIME, 'runtimepath' and 'packpath' to find the standard "runtime files" for syntax highlighting, filetype-specific behavior, and standard plugins (including :checkhealth). If the runtime files cannot be found then those features will not work.
:che[ckhealth] {plugins} Run healthcheck(s) for one or more plugins. E.g. to run only the standard Nvim healthcheck:
:checkhealth nvim
To run the healthchecks for the "foo" and "bar" plugins (assuming they are on 'runtimepath' and they have implemented the Lua require("foo.health").check() interface):
:checkhealth foo bar
To run healthchecks for Lua submodules, use dot notation or "*" to refer to all submodules. For example Nvim provides vim.lsp and vim.treesitter:
:checkhealth vim.lsp vim.treesitter
:checkhealth vim*

Functions health-functions vim.health

The Lua "health" module can be used to create new healthchecks. To get started see health-dev.
vim.health.report_start({name}) vim.health.report_start() Starts a new report. Most plugins should call this only once, but if you want different sections to appear in your report, call this once per section.
vim.health.report_info({msg}) vim.health.report_info() Reports an informational message.
vim.health.report_ok({msg}) vim.health.report_ok() Reports a "success" message.
vim.health.report_warn({msg} [, {advice}]) vim.health.report_warn() Reports a warning. {advice} is an optional list of suggestions to present to the user.
vim.health.report_error({msg} [, {advice}]) vim.health.report_error() Reports an error. {advice} is an optional list of suggestions to present to the user.

Create a healthcheck health-dev

Healthchecks are functions that check the user environment, configuration, or any other prerequisites that a plugin cares about. Nvim ships with healthchecks in:
$VIMRUNTIME/autoload/health/
$VIMRUNTIME/lua/vim/lsp/health.lua
$VIMRUNTIME/lua/vim/treesitter/health.lua
and more...
To add a new healthcheck for your own plugin, simply create a "health.lua" module on 'runtimepath' that returns a table with a "check()" function. Then :checkhealth will automatically find and invoke the function.
For example if your plugin is named "foo", define your healthcheck module at one of these locations (on 'runtimepath'):
lua/foo/health/init.lua
lua/foo/health.lua
If your plugin also provides a submodule named "bar" for which you want a separate healthcheck, define the healthcheck at one of these locations:
lua/foo/bar/health/init.lua
lua/foo/bar/health.lua
All such health modules must return a Lua table containing a check() function.
Copy this sample code into lua/foo/health.lua, replacing "foo" in the path with your plugin name:
local M = {}

M.check = function()
  vim.health.report_start("my_plugin report")
  -- make sure setup function parameters are ok
  if check_setup() then
    vim.health.report_ok("Setup is correct")
  else
    vim.health.report_error("Setup is incorrect")
  end
  -- do some more checking
  -- ...
end

return M
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