Improve JediDebugInfo for envs (#858)

Improve JediDebugInfo for envs

This is taken out of https://github.com/davidhalter/jedi-vim/pull/836.

autoload/jedi.vim

@@ -170,7 +170,19 @@ function! jedi#debug_info() abort
       endif
     endif
     echo '#### Jedi-vim debug information'
-    echo 'Using Python version:' s:python_version
+    echo "\n"
+    echo '##### jedi-vim version'
+    echo "\n"
+    echo ' - jedi-vim git version: '
+    echon substitute(system('git -C '.s:script_path.' describe --tags --always --dirty'), '\v\n$', '', '')
+    echo ' - jedi git submodule status: '
+    echon substitute(system('git -C '.s:script_path.' submodule status pythonx/jedi'), '\v\n$', '', '')
+    echo ' - parso git submodule status: '
+    echon substitute(system('git -C '.s:script_path.' submodule status pythonx/parso'), '\v\n$', '', '')
+    echo "\n"
+    echo '##### Global Python'
+    echo "\n"
+    echo 'Using Python version '.s:python_version.' to access Jedi.'
     let pyeval = s:python_version == 3 ? 'py3eval' : 'pyeval'
     let s:pythonjedi_called = 0
     PythonJedi import vim; vim.command('let s:pythonjedi_called = 1')
@@ -185,14 +197,9 @@ function! jedi#debug_info() abort
       PythonJedi from jedi_vim_debug import display_debug_info
       PythonJedi display_debug_info()
     endif
-    echo ' - jedi-vim git version: '
-    echon substitute(system('git -C '.s:script_path.' describe --tags --always --dirty'), '\v\n$', '', '')
-    echo ' - jedi git submodule status: '
-    echon substitute(system('git -C '.s:script_path.' submodule status pythonx/jedi'), '\v\n$', '', '')
-    echo ' - parso git submodule status: '
-    echon substitute(system('git -C '.s:script_path.' submodule status pythonx/parso'), '\v\n$', '', '')
     echo "\n"
     echo '##### Settings'
+    echo "\n"
     echo '```'
     let jedi_settings = items(filter(copy(g:), "v:key =~# '\\v^jedi#'"))
     let has_nondefault_settings = 0

pythonx/jedi_vim.py

@@ -193,6 +193,13 @@ def get_environment(use_cache=True):
     return environment
 
 
+def get_known_environments():
+    """Get known Jedi environments."""
+    envs = list(jedi.api.environment.find_virtualenvs())
+    envs.extend(jedi.api.environment.find_system_environments())
+    return envs
+
+
 @catch_and_print_exceptions
 def get_script(source=None, column=None):
     jedi.settings.additional_dynamic_modules = [

pythonx/jedi_vim_debug.py

@@ -53,7 +53,7 @@ def display_debug_info():
         echo_error('ERROR: could not import the "jedi" Python module: {0}'.format(
             error_msg))
     else:
-        echo('Jedi path: `{0}`'.format(jedi_vim.jedi.__file__))
+        echo('\n##### Jedi\n\n - path: `{0}`'.format(jedi_vim.jedi.__file__))
         echo(' - version: {0}'.format(jedi_vim.jedi.__version__))
 
         try:
@@ -65,7 +65,8 @@ def display_debug_info():
             except AttributeError:
                 sys_path = script_evaluator.sys_path
         else:
-            echo(' - environment: `{0}`'.format(environment))
+            echo('\n##### Jedi environment: {0}\n\n'.format(environment))
+            echo(' - executable: {0}'.format(environment.executable))
             try:
                 sys_path = environment.get_sys_path()
             except Exception:
@@ -76,3 +77,11 @@ def display_debug_info():
         echo(' - sys_path:')
         for p in sys_path:
             echo('    - `{0}`'.format(p))
+
+        if environment:
+            echo('\n##### Known environments\n\n')
+            for environment in jedi_vim.get_known_environments():
+                echo(' - {0} ({1})\n'.format(
+                    environment,
+                    environment.executable,
+                ))