Disable matplotlib support if display isn't available (PY-16100)

python/helpers/pydev/_pydevd_bundle/pydevd_constants.py

@@ -103,6 +103,9 @@ USE_LIB_COPY = SUPPORT_GEVENT and \
                 (IS_PY3K and sys.version_info[1] >= 3))
 
 
+INTERACTIVE_MODE_AVAILABLE = os.getenv('DISPLAY') is not None
+
+
 def protect_libraries_from_patching():
     """
     In this function we delete some modules from `sys.modules` dictionary and import them again inside

python/helpers/pydev/pydevconsole.py

@@ -16,7 +16,7 @@ import os
 import sys
 
 from _pydev_imps._pydev_saved_modules import threading
-from _pydevd_bundle.pydevd_constants import dict_iter_items
+from _pydevd_bundle.pydevd_constants import INTERACTIVE_MODE_AVAILABLE
 
 import traceback
 from _pydev_bundle import fix_getpass
@@ -178,6 +178,9 @@ def init_mpl_in_console(interpreter):
 
     set_return_control_callback(return_control)
 
+    if not INTERACTIVE_MODE_AVAILABLE:
+        return
+
     from _pydev_bundle.pydev_import_hook import import_hook_manager
     from pydev_ipython.matplotlibtools import activate_matplotlib, activate_pylab, activate_pyplot
     import_hook_manager.add_module_name("matplotlib", lambda: activate_matplotlib(interpreter.enableGui))

python/helpers/pydev/pydevd.py

@@ -12,7 +12,7 @@ import traceback
 
 from _pydevd_bundle.pydevd_constants import IS_JYTH_LESS25, IS_PY3K, IS_PY34_OLDER, get_thread_id, dict_keys, dict_pop, dict_contains, \
     dict_iter_items, DebugInfoHolder, PYTHON_SUSPEND, STATE_SUSPEND, STATE_RUN, get_frame, xrange, \
-    clear_cached_thread_id
+    clear_cached_thread_id, INTERACTIVE_MODE_AVAILABLE
 from _pydev_bundle import fix_getpass
 from _pydev_bundle import pydev_imports, pydev_log
 from _pydev_bundle._pydev_filesystem_encoding import getfilesystemencoding
@@ -993,7 +993,8 @@ class PyDB:
             send_message("asyncio_event", 0, "Task", "Task", "thread", "stop", file, 1, frame=None, parent=None)
 
         try:
-            self.init_matplotlib_support()
+            if INTERACTIVE_MODE_AVAILABLE:
+                self.init_matplotlib_support()
         except:
             sys.stderr.write("Matplotlib support in debugger failed\n")
             traceback.print_exc()