From 8a23b9113432a84fb84aeda9f3e314aec78b1963 Mon Sep 17 00:00:00 2001
From: Florian Bruhin <git@the-compiler.org>
Date: Sun, 11 Mar 2018 08:15:22 +0100
Subject: Handle ImportError in version.opengl_vendor

Fixes #3698

(cherry picked from commit d9f7d401c612706f08600225dd8ee3dbcb428b46)
---
 doc/changelog.asciidoc       | 9 +++++++++
 qutebrowser/utils/version.py | 8 +++++++-
 2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/doc/changelog.asciidoc b/doc/changelog.asciidoc
index 595373031..1550b3a09 100644
--- a/doc/changelog.asciidoc
+++ b/doc/changelog.asciidoc
@@ -15,6 +15,15 @@ breaking changes (such as renamed commands) can happen in minor releases.
 // `Fixed` for any bug fixes.
 // `Security` to invite users to upgrade in case of vulnerabilities.
 
+v1.3.0 (unreleased)
+-------------------
+
+Fixed
+~~~~~
+
+- qutebrowser now starts properly when the PyQt5 QOpenGLFunctions package wasn't found.
+
+
 v1.2.0
 ------
 
diff --git a/qutebrowser/utils/version.py b/qutebrowser/utils/version.py
index 65ceb576a..a49ccc1bc 100644
--- a/qutebrowser/utils/version.py
+++ b/qutebrowser/utils/version.py
@@ -453,7 +453,13 @@ def opengl_vendor():  # pragma: no cover
         vp = QOpenGLVersionProfile()
         vp.setVersion(2, 0)
 
-        vf = ctx.versionFunctions(vp)
+        try:
+            vf = ctx.versionFunctions(vp)
+        except ImportError as e:
+            log.init.debug("opengl_vendor: Importing version functions "
+                           "failed: {}".format(e))
+            return None
+
         if vf is None:
             log.init.debug("opengl_vendor: Getting version functions failed!")
             return None
-- 
cgit v1.2.3-54-g00ecf