mirror of
https://github.com/neovim/neovim.git
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33ada232c7
Change missing provider plugins from errors to warnings for python and perl. Also give proper advice under the ADVICE section instead of just the errors.
114 lines
4.0 KiB
VimL
114 lines
4.0 KiB
VimL
" The Python provider helper
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if exists('s:loaded_pythonx_provider')
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finish
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endif
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let s:loaded_pythonx_provider = 1
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function! provider#pythonx#Require(host) abort
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" Python host arguments
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let prog = provider#python3#Prog()
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let args = [prog, '-c', 'import sys; sys.path = list(filter(lambda x: x != "", sys.path)); import neovim; neovim.start_host()']
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" Collect registered Python plugins into args
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let python_plugins = remote#host#PluginsForHost(a:host.name)
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for plugin in python_plugins
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call add(args, plugin.path)
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endfor
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return provider#Poll(args, a:host.orig_name, '$NVIM_PYTHON_LOG_FILE', {'overlapped': v:true})
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endfunction
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function! s:get_python_executable_from_host_var(major_version) abort
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return expand(get(g:, 'python'.(a:major_version == 3 ? '3' : execute("throw 'unsupported'")).'_host_prog', ''), v:true)
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endfunction
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function! s:get_python_candidates(major_version) abort
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return {
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\ 3: ['python3', 'python3.10', 'python3.9', 'python3.8', 'python3.7', 'python']
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\ }[a:major_version]
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endfunction
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" Returns [path_to_python_executable, error_message]
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function! provider#pythonx#Detect(major_version) abort
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return provider#pythonx#DetectByModule('neovim', a:major_version)
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endfunction
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" Returns [path_to_python_executable, error_message]
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function! provider#pythonx#DetectByModule(module, major_version) abort
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let python_exe = s:get_python_executable_from_host_var(a:major_version)
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if !empty(python_exe)
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return [exepath(expand(python_exe, v:true)), '']
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endif
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let candidates = s:get_python_candidates(a:major_version)
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let errors = []
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for exe in candidates
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let [result, error] = provider#pythonx#CheckForModule(exe, a:module, a:major_version)
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if result
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return [exe, error]
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endif
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" Accumulate errors in case we don't find any suitable Python executable.
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call add(errors, error)
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endfor
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" No suitable Python executable found.
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return ['', 'Could not load Python '.a:major_version.":\n".join(errors, "\n")]
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endfunction
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" Returns array: [prog_exitcode, prog_version]
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function! s:import_module(prog, module) abort
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let prog_version = system([a:prog, '-c' , printf(
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\ 'import sys; ' .
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\ 'sys.path = list(filter(lambda x: x != "", sys.path)); ' .
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\ 'sys.stdout.write(str(sys.version_info[0]) + "." + str(sys.version_info[1])); ' .
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\ 'import pkgutil; ' .
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\ 'exit(2*int(pkgutil.get_loader("%s") is None))',
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\ a:module)])
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return [v:shell_error, prog_version]
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endfunction
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" Returns array: [was_success, error_message]
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function! provider#pythonx#CheckForModule(prog, module, major_version) abort
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let prog_path = exepath(a:prog)
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if prog_path ==# ''
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return [0, a:prog . ' not found in search path or not executable.']
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endif
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let min_version = '3.7'
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" Try to load module, and output Python version.
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" Exit codes:
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" 0 module can be loaded.
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" 2 module cannot be loaded.
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" Otherwise something else went wrong (e.g. 1 or 127).
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let [prog_exitcode, prog_version] = s:import_module(a:prog, a:module)
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if prog_exitcode == 2 || prog_exitcode == 0
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" Check version only for expected return codes.
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if prog_version !~ '^' . a:major_version
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return [0, prog_path . ' is Python ' . prog_version . ' and cannot provide Python '
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\ . a:major_version . '.']
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elseif prog_version =~ '^' . a:major_version && str2nr(prog_version[2:]) < str2nr(min_version[2:])
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return [0, prog_path . ' is Python ' . prog_version . ' and cannot provide Python >= '
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\ . min_version . '.']
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endif
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endif
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if prog_exitcode == 2
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return [0, prog_path.' does not have the "' . a:module . '" module.']
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elseif prog_exitcode == 127
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" This can happen with pyenv's shims.
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return [0, prog_path . ' does not exist: ' . prog_version]
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elseif prog_exitcode
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return [0, 'Checking ' . prog_path . ' caused an unknown error. '
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\ . '(' . prog_exitcode . ', output: ' . prog_version . ')'
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\ . ' Report this at https://github.com/neovim/neovim']
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endif
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return [1, '']
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endfunction
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