first-humanoid-dataset

	local health = vim.health
	local iswin = vim.fn.has('win32') == 1

	local M = {}

	local function cmd_ok(cmd)
	local out = vim.fn.system(cmd)
	return vim.v.shell_error == 0, out
	end

	-- Attempts to construct a shell command from an args list.
	-- Only for display, to help users debug a failed command.
	--- @param cmd string\|string[]
	local function shellify(cmd)
	if type(cmd) ~= 'table' then
	return cmd
	end
	local escaped = {} --- @type string[]
	for i, v in ipairs(cmd) do
	escaped[i] = v:match('[^A-Za-z_/.-]') and vim.fn.shellescape(v) or v
	end
	return table.concat(escaped, ' ')
	end

	-- Handler for s:system() function.
	--- @param self {output: string, stderr: string, add_stderr_to_output: boolean}
	local function system_handler(self, _, data, event)
	if event == 'stderr' then
	if self.add_stderr_to_output then
	self.output = self.output .. table.concat(data, '')
	else
	self.stderr = self.stderr .. table.concat(data, '')
	end
	elseif event == 'stdout' then
	self.output = self.output .. table.concat(data, '')
	end
	end

	--- @param cmd string\|string[] List of command arguments to execute
	--- @param args? table Optional arguments:
	--- - stdin (string): Data to write to the job's stdin
	--- - stderr (boolean): Append stderr to stdout
	--- - ignore_error (boolean): If true, ignore error output
	--- - timeout (number): Number of seconds to wait before timing out (default 30)
	local function system(cmd, args)
	args = args or {}
	local stdin = args.stdin or ''
	local stderr = args.stderr or false
	local ignore_error = args.ignore_error or false

	local shell_error_code = 0
	local opts = {
	add_stderr_to_output = stderr,
	output = '',
	stderr = '',
	on_stdout = system_handler,
	on_stderr = system_handler,
	on_exit = function(_, data)
	shell_error_code = data
	end,
	}
	local jobid = vim.fn.jobstart(cmd, opts)

	if jobid < 1 then
	local message =
	string.format('Command error (job=%d): %s (in %s)', jobid, shellify(cmd), vim.uv.cwd())
	error(message)
	return opts.output, 1
	end

	if stdin:find('^%s$') then
	vim.fn.chansend(jobid, stdin)
	end

	local res = vim.fn.jobwait({ jobid }, vim.F.if_nil(args.timeout, 30) * 1000)
	if res[1] == -1 then
	error('Command timed out: ' .. shellify(cmd))
	vim.fn.jobstop(jobid)
	elseif shell_error_code ~= 0 and not ignore_error then
	local emsg = string.format(
	'Command error (job=%d, exit code %d): %s (in %s)',
	jobid,
	shell_error_code,
	shellify(cmd),
	vim.uv.cwd()
	)
	if opts.output:find('%S') then
	emsg = string.format('%s\noutput: %s', emsg, opts.output)
	end
	if opts.stderr:find('%S') then
	emsg = string.format('%s\nstderr: %s', emsg, opts.stderr)
	end
	error(emsg)
	end

	return vim.trim(vim.fn.system(cmd)), shell_error_code
	end

	---@param provider string
	local function provider_disabled(provider)
	local loaded_var = 'loaded_' .. provider .. '_provider'
	local v = vim.g[loaded_var]
	if v == 0 then
	health.info('Disabled (' .. loaded_var .. '=' .. v .. ').')
	return true
	end
	return false
	end

	--- Checks the hygiene of a `g:loaded_xx_provider` variable.
	local function check_loaded_var(var)
	if vim.g[var] == 1 then
	health.error(('`g:%s=1` may have been set by mistake.'):format(var), {
	('Remove `vim.g.%s=1` from your config.'):format(var),
	'To disable the provider, set this to 0, not 1.',
	'If you want to enable the provider but skip automatic detection, set the respective `g:…_host_prog` var. See :help provider',
	})
	end
	end

	local function clipboard()
	health.start('Clipboard (optional)')

	check_loaded_var('loaded_clipboard_provider')

	if
	os.getenv('TMUX')
	and vim.fn.executable('tmux') == 1
	and vim.fn.executable('pbpaste') == 1
	and not cmd_ok('pbpaste')
	then
	local tmux_version = string.match(vim.fn.system('tmux -V'), '%d+%.%d+')
	local advice = {
	'Install tmux 2.6+. https://superuser.com/q/231130',
	'or use tmux with reattach-to-user-namespace. https://superuser.com/a/413233',
	}
	health.error('pbcopy does not work with tmux version: ' .. tmux_version, advice)
	end

	local clipboard_tool = vim.fn['provider#clipboard#Executable']() ---@type string
	if vim.g.clipboard ~= nil and clipboard_tool == '' then
	local error_message = vim.fn['provider#clipboard#Error']() ---@type string
	health.error(
	error_message,
	"Use the example in :help g:clipboard as a template, or don't set g:clipboard at all."
	)
	elseif clipboard_tool:find('^%s*$') then
	health.warn(
	'No clipboard tool found. Clipboard registers (`"+` and `"*`) will not work.',
	':help clipboard'
	)
	else
	health.ok('Clipboard tool found: ' .. clipboard_tool)
	end
	end

	local function node()
	health.start('Node.js provider (optional)')

	check_loaded_var('loaded_node_provider')

	if provider_disabled('node') then
	return
	end

	if
	vim.fn.executable('node') == 0
	or (
	vim.fn.executable('npm') == 0
	and vim.fn.executable('yarn') == 0
	and vim.fn.executable('pnpm') == 0
	)
	then
	health.warn(
	'`node` and `npm` (or `yarn`, `pnpm`) must be in $PATH.',
	'Install Node.js and verify that `node` and `npm` (or `yarn`, `pnpm`) commands work.'
	)
	return
	end

	-- local node_v = vim.fn.split(system({'node', '-v'}), "\n")[1] or ''
	local ok, node_v = cmd_ok({ 'node', '-v' })
	health.info('Node.js: ' .. node_v)
	if not ok or vim.version.lt(node_v, '6.0.0') then
	health.warn('Nvim node.js host does not support Node ' .. node_v)
	-- Skip further checks, they are nonsense if nodejs is too old.
	return
	end
	if vim.fn['provider#node#can_inspect']() == 0 then
	health.warn(
	'node.js on this system does not support --inspect-brk so $NVIM_NODE_HOST_DEBUG is ignored.'
	)
	end

	local node_detect_table = vim.fn['provider#node#Detect']() ---@type string[]
	local host = node_detect_table[1]
	if host:find('^%s*$') then
	health.warn('Missing "neovim" npm (or yarn, pnpm) package.', {
	'Run in shell: npm install -g neovim',
	'Run in shell (if you use yarn): yarn global add neovim',
	'Run in shell (if you use pnpm): pnpm install -g neovim',
	'You may disable this provider (and warning) by adding `let g:loaded_node_provider = 0` to your init.vim',
	})
	return
	end
	health.info('Nvim node.js host: ' .. host)

	local manager = 'npm'
	if vim.fn.executable('yarn') == 1 then
	manager = 'yarn'
	elseif vim.fn.executable('pnpm') == 1 then
	manager = 'pnpm'
	end

	local latest_npm_cmd = (
	iswin and 'cmd /c ' .. manager .. ' info neovim --json' or manager .. ' info neovim --json'
	)
	local latest_npm
	ok, latest_npm = cmd_ok(vim.split(latest_npm_cmd, ' '))
	if not ok or latest_npm:find('^%s$') then
	health.error(
	'Failed to run: ' .. latest_npm_cmd,
	{ "Make sure you're connected to the internet.", 'Are you behind a firewall or proxy?' }
	)
	return
	end

	local pcall_ok, pkg_data = pcall(vim.json.decode, latest_npm)
	if not pcall_ok then
	return 'error: ' .. latest_npm
	end
	local latest_npm_subtable = pkg_data['dist-tags'] or {}
	latest_npm = latest_npm_subtable['latest'] or 'unable to parse'

	local current_npm_cmd = { 'node', host, '--version' }
	local current_npm
	ok, current_npm = cmd_ok(current_npm_cmd)
	if not ok then
	health.error(
	'Failed to run: ' .. table.concat(current_npm_cmd, ' '),
	{ 'Report this issue with the output of: ', table.concat(current_npm_cmd, ' ') }
	)
	return
	end

	if latest_npm ~= 'unable to parse' and vim.version.lt(current_npm, latest_npm) then
	local message = 'Package "neovim" is out-of-date. Installed: '
	.. current_npm:gsub('%\n$', '')
	.. ', latest: '
	.. latest_npm:gsub('%\n$', '')

	health.warn(message, {
	'Run in shell: npm install -g neovim',
	'Run in shell (if you use yarn): yarn global add neovim',
	'Run in shell (if you use pnpm): pnpm install -g neovim',
	})
	else
	health.ok('Latest "neovim" npm/yarn/pnpm package is installed: ' .. current_npm)
	end
	end

	local function perl()
	health.start('Perl provider (optional)')

	check_loaded_var('loaded_perl_provider')

	if provider_disabled('perl') then
	return
	end

	local perl_exec, perl_warnings = vim.provider.perl.detect()

	if not perl_exec then
	health.warn(assert(perl_warnings), {
	'See :help provider-perl for more information.',
	'You can disable this provider (and warning) by adding `let g:loaded_perl_provider = 0` to your init.vim',
	})
	health.warn('No usable perl executable found')
	return
	end

	health.info('perl executable: ' .. perl_exec)

	-- we cannot use cpanm that is on the path, as it may not be for the perl
	-- set with g:perl_host_prog
	local ok = cmd_ok({ perl_exec, '-W', '-MApp::cpanminus', '-e', '' })
	if not ok then
	return { perl_exec, '"App::cpanminus" module is not installed' }
	end

	local latest_cpan_cmd = {
	perl_exec,
	'-MApp::cpanminus::fatscript',
	'-e',
	'my $app = App::cpanminus::script->new; $app->parse_options ("--info", "-q", "Neovim::Ext"); exit $app->doit',
	}
	local latest_cpan
	ok, latest_cpan = cmd_ok(latest_cpan_cmd)
	if not ok or latest_cpan:find('^%s*$') then
	health.error(
	'Failed to run: ' .. table.concat(latest_cpan_cmd, ' '),
	{ "Make sure you're connected to the internet.", 'Are you behind a firewall or proxy?' }
	)
	return
	elseif latest_cpan[1] == '!' then
	local cpanm_errs = vim.split(latest_cpan, '!')
	if cpanm_errs[1]:find("Can't write to ") then
	local advice = {} ---@type string[]
	for i = 2, #cpanm_errs do
	advice[#advice + 1] = cpanm_errs[i]
	end

	health.warn(cpanm_errs[1], advice)
	-- Last line is the package info
	latest_cpan = cpanm_errs[#cpanm_errs]
	else
	health.error('Unknown warning from command: ' .. latest_cpan_cmd, cpanm_errs)
	return
	end
	end
	latest_cpan = tostring(vim.fn.matchstr(latest_cpan, [[$\.\?\d$\+]]))
	if latest_cpan:find('^%s*$') then
	health.error('Cannot parse version number from cpanm output: ' .. latest_cpan)
	return
	end

	local current_cpan_cmd = { perl_exec, '-W', '-MNeovim::Ext', '-e', 'print $Neovim::Ext::VERSION' }
	local current_cpan
	ok, current_cpan = cmd_ok(current_cpan_cmd)
	if not ok then
	health.error(
	'Failed to run: ' .. table.concat(current_cpan_cmd, ' '),
	{ 'Report this issue with the output of: ', table.concat(current_cpan_cmd, ' ') }
	)
	return
	end

	if vim.version.lt(current_cpan, latest_cpan) then
	local message = 'Module "Neovim::Ext" is out-of-date. Installed: '
	.. current_cpan
	.. ', latest: '
	.. latest_cpan
	health.warn(message, 'Run in shell: cpanm -n Neovim::Ext')
	else
	health.ok('Latest "Neovim::Ext" cpan module is installed: ' .. current_cpan)
	end
	end

	local function is(path, ty)
	if not path then
	return false
	end
	local stat = vim.uv.fs_stat(path)
	if not stat then
	return false
	end
	return stat.type == ty
	end

	-- Resolves Python executable path by invoking and checking `sys.executable`.
	local function python_exepath(invocation)
	local p = vim.system({ invocation, '-c', 'import sys; sys.stdout.write(sys.executable)' }):wait()
	assert(p.code == 0, p.stderr)
	return vim.fs.normalize(vim.trim(p.stdout))
	end

	--- Check if pyenv is available and a valid pyenv root can be found, then return
	--- their respective paths. If either of those is invalid, return two empty
	--- strings, effectively ignoring pyenv.
	---
	--- @return [string, string]
	local function check_for_pyenv()
	local pyenv_path = vim.fn.resolve(vim.fn.exepath('pyenv'))

	if pyenv_path == '' then
	return { '', '' }
	end

	health.info('pyenv: Path: ' .. pyenv_path)

	local pyenv_root = vim.fn.resolve(os.getenv('PYENV_ROOT') or '')

	if pyenv_root == '' then
	local p = vim.system({ pyenv_path, 'root' }):wait()
	if p.code ~= 0 then
	local message = string.format(
	'pyenv: Failed to infer the root of pyenv by running `%s root` : %s. Ignoring pyenv for all following checks.',
	pyenv_path,
	p.stderr
	)
	health.warn(message)
	return { '', '' }
	end
	pyenv_root = vim.trim(p.stdout)
	health.info('pyenv: $PYENV_ROOT is not set. Infer from `pyenv root`.')
	end

	if not is(pyenv_root, 'directory') then
	local message = string.format(
	'pyenv: Root does not exist: %s. Ignoring pyenv for all following checks.',
	pyenv_root
	)
	health.warn(message)
	return { '', '' }
	end

	health.info('pyenv: Root: ' .. pyenv_root)

	return { pyenv_path, pyenv_root }
	end

	-- Check the Python interpreter's usability.
	local function check_bin(bin)
	if not is(bin, 'file') and (not iswin or not is(bin .. '.exe', 'file')) then
	health.error('"' .. bin .. '" was not found.')
	return false
	elseif vim.fn.executable(bin) == 0 then
	health.error('"' .. bin .. '" is not executable.')
	return false
	end
	return true
	end

	--- Fetch the contents of a URL.
	---
	--- @param url string
	local function download(url)
	local has_curl = vim.fn.executable('curl') == 1
	if has_curl and vim.fn.system({ 'curl', '-V' }):find('Protocols:.*https') then
	local out, rc = system({ 'curl', '-sL', url }, { stderr = true, ignore_error = true })
	if rc ~= 0 then
	return 'curl error with ' .. url .. ': ' .. rc
	else
	return out
	end
	elseif vim.fn.executable('python') == 1 then
	local script = ([[
	try:
	from urllib.request import urlopen
	except ImportError:
	from urllib2 import urlopen

	response = urlopen('%s')
	print(response.read().decode('utf8'))
	]]):format(url)
	local out, rc = system({ 'python', '-c', script })
	if out == '' and rc ~= 0 then
	return 'python urllib.request error: ' .. rc
	else
	return out
	end
	end

	local message = 'missing `curl` '

	if has_curl then
	message = message .. '(with HTTPS support) '
	end
	message = message .. 'and `python`, cannot make web request'

	return message
	end

	--- Get the latest Nvim Python client (pynvim) version from PyPI.
	local function latest_pypi_version()
	local pypi_version = 'unable to get pypi response'
	local pypi_response = download('https://pypi.org/pypi/pynvim/json')
	if pypi_response ~= '' then
	local pcall_ok, output = pcall(vim.fn.json_decode, pypi_response)
	if not pcall_ok then
	return 'error: ' .. pypi_response
	end

	local pypi_data = output
	local pypi_element = pypi_data['info'] or {}
	pypi_version = pypi_element['version'] or 'unable to parse'
	end
	return pypi_version
	end

	--- @param s string
	local function is_bad_response(s)
	local lower = s:lower()
	return vim.startswith(lower, 'unable')
	or vim.startswith(lower, 'error')
	or vim.startswith(lower, 'outdated')
	end

	--- Get version information using the specified interpreter. The interpreter is
	--- used directly in case breaking changes were introduced since the last time
	--- Nvim's Python client was updated.
	---
	--- @param python string
	---
	--- Returns: {
	--- {python executable version},
	--- {current nvim version},
	--- {current pypi nvim status},
	--- {installed version status}
	--- }
	local function version_info(python)
	local pypi_version = latest_pypi_version()

	local python_version, rc = system({
	python,
	'-c',
	'import sys; print(".".join(str(x) for x in sys.version_info[:3]))',
	})

	if rc ~= 0 or python_version == '' then
	python_version = 'unable to parse ' .. python .. ' response'
	end

	local nvim_path
	nvim_path, rc = system({
	python,
	'-c',
	'import sys; sys.path = [p for p in sys.path if p != ""]; import neovim; print(neovim.__file__)',
	})
	if rc ~= 0 or nvim_path == '' then
	return { python_version, 'unable to load neovim Python module', pypi_version, nvim_path }
	end

	-- Assuming that multiple versions of a package are installed, sort them
	-- numerically in descending order.
	local function compare(metapath1, metapath2)
	local a = vim.fn.matchstr(vim.fn.fnamemodify(metapath1, ':p:h:t'), [[[0-9.]\+]])
	local b = vim.fn.matchstr(vim.fn.fnamemodify(metapath2, ':p:h:t'), [[[0-9.]\+]])
	if a == b then
	return 0
	elseif a > b then
	return 1
	else
	return -1
	end
	end

	-- Try to get neovim.VERSION (added in 0.1.11dev).
	local nvim_version
	nvim_version, rc = system({
	python,
	'-c',
	'from neovim import VERSION as v; print("{}.{}.{}{}".format(v.major, v.minor, v.patch, v.prerelease))',
	}, { stderr = true, ignore_error = true })
	if rc ~= 0 or nvim_version == '' then
	nvim_version = 'unable to find pynvim module version'
	local base = vim.fs.basename(nvim_path)
	local metas = vim.fn.glob(base .. '-*/METADATA', true, true)
	vim.list_extend(metas, vim.fn.glob(base .. '-*/PKG-INFO', true, true))
	vim.list_extend(metas, vim.fn.glob(base .. '.egg-info/PKG-INFO', true, true))
	metas = table.sort(metas, compare)

	if metas and next(metas) ~= nil then
	for line in io.lines(metas[1]) do
	--- @cast line string
	local version = line:match('^Version: (%S+)')
	if version then
	nvim_version = version
	break
	end
	end
	end
	end

	local nvim_path_base = vim.fn.fnamemodify(nvim_path, [[:~:h]])
	local version_status = 'unknown; ' .. nvim_path_base
	if not is_bad_response(nvim_version) and not is_bad_response(pypi_version) then
	if vim.version.lt(nvim_version, pypi_version) then
	version_status = 'outdated; from ' .. nvim_path_base
	else
	version_status = 'up to date'
	end
	end

	return { python_version, nvim_version, pypi_version, version_status }
	end

	local function python()
	health.start('Python 3 provider (optional)')

	check_loaded_var('loaded_python3_provider')

	local python_exe = ''
	local virtual_env = os.getenv('VIRTUAL_ENV')
	local venv = virtual_env and vim.fn.resolve(virtual_env) or ''
	local host_prog_var = 'python3_host_prog'
	local python_multiple = {} ---@type string[]

	if provider_disabled('python3') then
	return
	end

	local pyenv_table = check_for_pyenv()
	local pyenv = pyenv_table[1]
	local pyenv_root = pyenv_table[2]

	if vim.g[host_prog_var] then
	local message = string.format('Using: g:%s = "%s"', host_prog_var, vim.g[host_prog_var])
	health.info(message)
	end

	local pyname, pythonx_warnings = vim.provider.python.detect_by_module('neovim')

	if not pyname then
	health.warn(
	'No Python executable found that can `import neovim`. '
	.. 'Using the first available executable for diagnostics.'
	)
	elseif vim.g[host_prog_var] then
	python_exe = pyname
	end

	-- No Python executable could `import neovim`, or host_prog_var was used.
	if pythonx_warnings then
	health.warn(pythonx_warnings, {
	'See :help provider-python for more information.',
	'You can disable this provider (and warning) by adding `let g:loaded_python3_provider = 0` to your init.vim',
	})
	elseif pyname and pyname ~= '' and python_exe == '' then
	if not vim.g[host_prog_var] then
	local message = string.format(
	'`g:%s` is not set. Searching for %s in the environment.',
	host_prog_var,
	pyname
	)
	health.info(message)
	end

	if pyenv ~= '' then
	python_exe = system({ pyenv, 'which', pyname }, { stderr = true })
	if python_exe == '' then
	health.warn('pyenv could not find ' .. pyname .. '.')
	end
	end

	if python_exe == '' then
	python_exe = vim.fn.exepath(pyname)

	if os.getenv('PATH') then
	local path_sep = iswin and ';' or ':'
	local paths = vim.split(os.getenv('PATH') or '', path_sep)

	for _, path in ipairs(paths) do
	local path_bin = vim.fs.normalize(path .. '/' .. pyname)
	if
	path_bin ~= vim.fs.normalize(python_exe)
	and vim.tbl_contains(python_multiple, path_bin)
	and vim.fn.executable(path_bin) == 1
	then
	python_multiple[#python_multiple + 1] = path_bin
	end
	end

	if vim.tbl_count(python_multiple) > 0 then
	-- This is worth noting since the user may install something
	-- that changes $PATH, like homebrew.
	local message = string.format(
	'Multiple %s executables found. Set `g:%s` to avoid surprises.',
	pyname,
	host_prog_var
	)
	health.info(message)
	end

	if python_exe:find('shims') then
	local message = string.format('`%s` appears to be a pyenv shim.', python_exe)
	local advice = string.format(
	'`pyenv` is not in $PATH, your pyenv installation is broken. Set `g:%s` to avoid surprises.',
	host_prog_var
	)
	health.warn(message, advice)
	end
	end
	end
	end

	if python_exe ~= '' and not vim.g[host_prog_var] then
	if
	venv == ''
	and pyenv ~= ''
	and pyenv_root ~= ''
	and vim.startswith(vim.fn.resolve(python_exe), pyenv_root .. '/')
	then
	local advice = string.format(
	'Create a virtualenv specifically for Nvim using pyenv, and set `g:%s`. This will avoid the need to install the pynvim module in each version/virtualenv.',
	host_prog_var
	)
	health.warn('pyenv is not set up optimally.', advice)
	elseif venv ~= '' then
	local venv_root = pyenv_root ~= '' and pyenv_root or vim.fs.dirname(venv)

	if vim.startswith(vim.fn.resolve(python_exe), venv_root .. '/') then
	local advice = string.format(
	'Create a virtualenv specifically for Nvim and use `g:%s`. This will avoid the need to install the pynvim module in each virtualenv.',
	host_prog_var
	)
	health.warn('Your virtualenv is not set up optimally.', advice)
	end
	end
	end

	if pyname and python_exe == '' and pyname ~= '' then
	-- An error message should have already printed.
	health.error('`' .. pyname .. '` was not found.')
	elseif python_exe ~= '' and not check_bin(python_exe) then
	python_exe = ''
	end

	-- Diagnostic output
	health.info('Executable: ' .. (python_exe == '' and 'Not found' or python_exe))
	if vim.tbl_count(python_multiple) > 0 then
	for _, path_bin in ipairs(python_multiple) do
	health.info('Other python executable: ' .. path_bin)
	end
	end

	if python_exe == '' then
	-- No Python executable can import 'neovim'. Check if any Python executable
	-- can import 'pynvim'. If so, that Python failed to import 'neovim' as
	-- well, which is most probably due to a failed pip upgrade:
	-- https://github.com/neovim/neovim/wiki/Following-HEAD#20181118
	local pynvim_exe = vim.provider.python.detect_by_module('pynvim')
	if pynvim_exe then
	local message = 'Detected pip upgrade failure: Python executable can import "pynvim" but not "neovim": '
	.. pynvim_exe
	local advice = {
	'Use that Python version to uninstall any "pynvim" or "neovim", e.g.:',
	pynvim_exe .. ' -m pip uninstall pynvim neovim',
	'Then see :help provider-python for "pynvim" installation steps.',
	}
	health.error(message, advice)
	end
	else
	local version_info_table = version_info(python_exe)
	local pyversion = version_info_table[1]
	local current = version_info_table[2]
	local latest = version_info_table[3]
	local status = version_info_table[4]

	if not vim.version.range('~3'):has(pyversion) then
	health.warn('Unexpected Python version. This could lead to confusing error messages.')
	end

	health.info('Python version: ' .. pyversion)

	if is_bad_response(status) then
	health.info('pynvim version: ' .. current .. ' (' .. status .. ')')
	else
	health.info('pynvim version: ' .. current)
	end

	if is_bad_response(current) then
	health.error(
	'pynvim is not installed.\nError: ' .. current,
	'See :help provider-python for "pynvim" installation steps.'
	)
	end

	if is_bad_response(latest) then
	health.warn('Could not contact PyPI to get latest version.')
	health.error('HTTP request failed: ' .. latest)
	elseif is_bad_response(status) then
	health.warn('Latest pynvim is NOT installed: ' .. latest)
	elseif not is_bad_response(current) then
	health.ok('Latest pynvim is installed.')
	end
	end

	health.start('Python virtualenv')
	if not virtual_env then
	health.ok('no $VIRTUAL_ENV')
	return
	end
	local errors = {} ---@type string[]
	-- Keep hints as dict keys in order to discard duplicates.
	local hints = {} ---@type table<string, boolean>
	-- The virtualenv should contain some Python executables, and those
	-- executables should be first both on Nvim's $PATH and the $PATH of
	-- subshells launched from Nvim.
	local bin_dir = iswin and 'Scripts' or 'bin'
	local venv_bins = vim.fn.glob(string.format('%s/%s/python*', virtual_env, bin_dir), true, true)
	--- @param v string
	venv_bins = vim.tbl_filter(function(v)
	-- XXX: Remove irrelevant executables found in bin/.
	return not v:match('python.*%-config')
	end, venv_bins)
	if vim.tbl_count(venv_bins) > 0 then
	for _, venv_bin in pairs(venv_bins) do
	venv_bin = vim.fs.normalize(venv_bin)
	local py_bin_basename = vim.fs.basename(venv_bin)
	local nvim_py_bin = python_exepath(vim.fn.exepath(py_bin_basename))
	local subshell_py_bin = python_exepath(py_bin_basename)
	if venv_bin ~= nvim_py_bin then
	errors[#errors + 1] = '$PATH yields this '
	.. py_bin_basename
	.. ' executable: '
	.. nvim_py_bin
	local hint = '$PATH ambiguities arise if the virtualenv is not '
	.. 'properly activated prior to launching Nvim. Close Nvim, activate the virtualenv, '
	.. 'check that invoking Python from the command line launches the correct one, '
	.. 'then relaunch Nvim.'
	hints[hint] = true
	end
	if venv_bin ~= subshell_py_bin then
	errors[#errors + 1] = '$PATH in subshells yields this '
	.. py_bin_basename
	.. ' executable: '
	.. subshell_py_bin
	local hint = '$PATH ambiguities in subshells typically are '
	.. 'caused by your shell config overriding the $PATH previously set by the '
	.. 'virtualenv. Either prevent them from doing so, or use this workaround: '
	.. 'https://vi.stackexchange.com/a/34996'
	hints[hint] = true
	end
	end
	else
	errors[#errors + 1] = 'no Python executables found in the virtualenv '
	.. bin_dir
	.. ' directory.'
	end

	local msg = '$VIRTUAL_ENV is set to: ' .. virtual_env
	if vim.tbl_count(errors) > 0 then
	if vim.tbl_count(venv_bins) > 0 then
	msg = string.format(
	'%s\nAnd its %s directory contains: %s',
	msg,
	bin_dir,
	table.concat(
	--- @param v string
	vim.tbl_map(function(v)
	return vim.fs.basename(v)
	end, venv_bins),
	', '
	)
	)
	end
	local conj = '\nBut '
	local msgs = {} --- @type string[]
	for _, err in ipairs(errors) do
	msgs[#msgs + 1] = msg
	msgs[#msgs + 1] = conj
	msgs[#msgs + 1] = err
	conj = '\nAnd '
	end
	msgs[#msgs + 1] = '\nSo invoking Python may lead to unexpected results.'
	health.warn(table.concat(msgs), vim.tbl_keys(hints))
	else
	health.info(msg)
	health.info(
	'Python version: '
	.. system('python -c "import platform, sys; sys.stdout.write(platform.python_version())"')
	)
	health.ok('$VIRTUAL_ENV provides :!python.')
	end
	end

	local function ruby()
	health.start('Ruby provider (optional)')

	check_loaded_var('loaded_ruby_provider')

	if provider_disabled('ruby') then
	return
	end

	if vim.fn.executable('ruby') == 0 or vim.fn.executable('gem') == 0 then
	health.warn(
	'`ruby` and `gem` must be in $PATH.',
	'Install Ruby and verify that `ruby` and `gem` commands work.'
	)
	return
	end
	health.info('Ruby: ' .. system({ 'ruby', '-v' }))

	local host, _ = vim.provider.ruby.detect()
	if (not host) or host:find('^%s*$') then
	health.warn('`neovim-ruby-host` not found.', {
	'Run `gem install neovim` to ensure the neovim RubyGem is installed.',
	'Run `gem environment` to ensure the gem bin directory is in $PATH.',
	'If you are using rvm/rbenv/chruby, try "rehashing".',
	'See :help g:ruby_host_prog for non-standard gem installations.',
	'You can disable this provider (and warning) by adding `let g:loaded_ruby_provider = 0` to your init.vim',
	})
	return
	end
	health.info('Host: ' .. host)

	local latest_gem_cmd = (iswin and 'cmd /c gem list -ra "^^neovim$"' or 'gem list -ra ^neovim$')
	local ok, latest_gem = cmd_ok(vim.split(latest_gem_cmd, ' '))
	if not ok or latest_gem:find('^%s*$') then
	health.error(
	'Failed to run: ' .. latest_gem_cmd,
	{ "Make sure you're connected to the internet.", 'Are you behind a firewall or proxy?' }
	)
	return
	end
	local gem_split = vim.split(latest_gem, [[neovim (\\|, \\|)$]])
	latest_gem = gem_split[1] or 'not found'

	local current_gem_cmd = { host, '--version' }
	local current_gem
	ok, current_gem = cmd_ok(current_gem_cmd)
	if not ok then
	health.error(
	'Failed to run: ' .. table.concat(current_gem_cmd, ' '),
	{ 'Report this issue with the output of: ', table.concat(current_gem_cmd, ' ') }
	)
	return
	end

	if vim.version.lt(current_gem, latest_gem) then
	local message = 'Gem "neovim" is out-of-date. Installed: '
	.. current_gem
	.. ', latest: '
	.. latest_gem
	health.warn(message, 'Run in shell: gem update neovim')
	else
	health.ok('Latest "neovim" gem is installed: ' .. current_gem)
	end
	end

	function M.check()
	clipboard()
	node()
	perl()
	python()
	ruby()
	end

	return M