Fix pygame greeting breaking pylint JSON output (#148)

Author: piotr-machura

pylsp/plugins/pylint_lint.py

@@ -8,6 +8,7 @@
 import sys
 import re
 from subprocess import Popen, PIPE
+import os
 
 from pylint.epylint import py_run
 from pylsp import hookimpl, lsp
@@ -19,6 +20,15 @@
 
 log = logging.getLogger(__name__)
 
+# Pylint fails to suppress STDOUT when importing whitelisted C
+# extensions, mangling their output into the expected JSON which breaks the
+# parser. The most prominent example (and maybe the only one out there) is
+# pygame - we work around that by asking pygame to NOT display the message upon
+# import via an (otherwise harmless) environment variable. This is an ad-hoc
+# fix for a very specific upstream issue.
+# Related: https://github.com/PyCQA/pylint/issues/3518
+os.environ['PYGAME_HIDE_SUPPORT_PROMPT'] = 'hide'
+
 
 class PylintLinter:
     last_diags = collections.defaultdict(list)