Merge #5519 from blueyed/improve-python-health-check

Improve Python health check

runtime/autoload/health/provider.vim

@@ -37,6 +37,7 @@ endfunction
 function! s:system(cmd, ...) abort
   let stdin = a:0 ? a:1 : ''
   let ignore_stderr = a:0 > 1 ? a:2 : 0
+  let ignore_error = a:0 > 2 ? a:3 : 0
   let opts = {
         \ 'output': '',
         \ 'on_stdout': function('s:system_handler'),
@@ -63,7 +64,7 @@ function! s:system(cmd, ...) abort
     call health#report_error(printf('Command timed out: %s',
           \ type(a:cmd) == type([]) ? join(a:cmd) : a:cmd))
     call jobstop(jobid)
-  elseif s:shell_error != 0
+  elseif s:shell_error != 0 && !ignore_error
     call health#report_error(printf("Command error (%d) %s: %s", jobid,
           \ type(a:cmd) == type([]) ? join(a:cmd) : a:cmd,
           \ opts.output))
@@ -83,8 +84,8 @@ endfunction
 " Fetch the contents of a URL.
 function! s:download(url) abort
   if executable('curl')
-    let rv = s:system(['curl', '-sL', a:url])
-    return s:shell_error ? 'curl error: '.s:shell_error : rv
+    let rv = s:system(['curl', '-sL', a:url], '', 1, 1)
+    return s:shell_error ? 'curl error with '.a:url.': '.s:shell_error : rv
   elseif executable('python')
     let script = "
           \try:\n
@@ -155,13 +156,10 @@ function! s:version_info(python) abort
   endif
 
   let nvim_path = s:trim(s:system([
-        \ a:python,
-        \ '-c',
-        \ 'import neovim; print(neovim.__file__)']))
-  let nvim_path = s:shell_error ? '' : nvim_path
-
-  if empty(nvim_path)
-    return [python_version, 'unable to find nvim executable', pypi_version, 'unable to get nvim executable']
+        \ a:python, '-c', 'import neovim; print(neovim.__file__)']))
+  if s:shell_error || empty(nvim_path)
+    return [python_version, 'unable to load neovim Python module', pypi_version,
+          \ nvim_path]
   endif
 
   " Assuming that multiple versions of a package are installed, sort them
@@ -172,9 +170,17 @@ function! s:version_info(python) abort
     return a == b ? 0 : a > b ? 1 : -1
   endfunction
 
-  let nvim_version = 'unable to find nvim version'
+  " Try to get neovim.VERSION (added in 0.1.11dev).
+  let nvim_version = s:system(['python', '-c',
+        \ 'from neovim import VERSION as v; '.
+        \ 'print("{}.{}.{}{}".format(v.major, v.minor, v.patch, v.prerelease))'],
+        \ '', 1, 1)
+  if empty(nvim_version)
+    let nvim_version = 'unable to find neovim Python module version'
     let base = fnamemodify(nvim_path, ':h')
-  let metas = glob(base.'-*/METADATA', 1, 1) + glob(base.'-*/PKG-INFO', 1, 1)
+    let metas = glob(base.'-*/METADATA', 1, 1)
+          \ + glob(base.'-*/PKG-INFO', 1, 1)
+          \ + glob(base.'.egg-info/PKG-INFO', 1, 1)
     let metas = sort(metas, 's:compare')
 
     if !empty(metas)
@@ -185,11 +191,13 @@ function! s:version_info(python) abort
         endif
       endfor
     endif
+  endif
 
-  let version_status = 'unknown'
+  let nvim_path_base = fnamemodify(nvim_path, ':~:h')
+  let version_status = 'unknown; '.nvim_path_base
   if !s:is_bad_response(nvim_version) && !s:is_bad_response(pypi_version)
     if s:version_cmp(nvim_version, pypi_version) == -1
-      let version_status = 'outdated'
+      let version_status = 'outdated; from '.nvim_path_base
     else
       let version_status = 'up to date'
     endif
@@ -372,7 +380,11 @@ function! s:check_python(version) abort
     endif
 
     call health#report_info('Python'.a:version.' version: ' . pyversion)
+    if s:is_bad_response(status)
+      call health#report_info(printf('%s-neovim version: %s (%s)', python_bin_name, current, status))
+    else
       call health#report_info(printf('%s-neovim version: %s', python_bin_name, current))
+    endif
 
     if s:is_bad_response(current)
       call health#report_error(
@@ -381,14 +393,12 @@ function! s:check_python(version) abort
     endif
 
     if s:is_bad_response(latest)
-      call health#report_warn('Unable to contact PyPI.')
+      call health#report_warn('Could not contact PyPI to get latest version.')
       call health#report_error('HTTP request failed: '.latest)
-    endif
-
-    if s:is_bad_response(status)
+    elseif s:is_bad_response(status)
       call health#report_warn(printf('Latest %s-neovim is NOT installed: %s',
             \ python_bin_name, latest))
-    elseif !s:is_bad_response(latest)
+    elseif !s:is_bad_response(current)
       call health#report_ok(printf('Latest %s-neovim is installed: %s',
             \ python_bin_name, latest))
     endif