From b77a0c0f868f09c07c81bf2ce776843964748eaf Mon Sep 17 00:00:00 2001
From: martinRenou <martin.renou@gmail.com>
Date: Wed, 11 Sep 2024 14:11:52 +0100
Subject: [PATCH] Set Qt offscreen in jupytergis-qgis (#131)

* Set Qt offscreen in jupytergis-qgis

This will ease user setting up jupytergis on a server

* Add comment
---
 .github/workflows/build.yml                           | 8 --------
 python/jupytergis_qgis/jupytergis_qgis/qgis_loader.py | 4 ++++
 2 files changed, 4 insertions(+), 8 deletions(-)

diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 5c2b744c..e65bfd0b 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -89,10 +89,6 @@ jobs:
             yarn=3
             qgis
 
-      - name: Set QT env var
-        shell: bash -l {0}
-        run: echo "QT_QPA_PLATFORM=offscreen" >> $GITHUB_ENV
-
       - name: Checkout
         uses: actions/checkout@v3
 
@@ -166,10 +162,6 @@ jobs:
         with:
           name: extension-artifacts
 
-      - name: Set QT env var
-        shell: bash -l {0}
-        run: echo "QT_QPA_PLATFORM=offscreen" >> $GITHUB_ENV
-
       - name: Install the extension
         shell: bash -l {0}
         run: |
diff --git a/python/jupytergis_qgis/jupytergis_qgis/qgis_loader.py b/python/jupytergis_qgis/jupytergis_qgis/qgis_loader.py
index 58ef5134..6d98e9c9 100644
--- a/python/jupytergis_qgis/jupytergis_qgis/qgis_loader.py
+++ b/python/jupytergis_qgis/jupytergis_qgis/qgis_loader.py
@@ -24,6 +24,10 @@
     QgsVectorTileLayer,
 )
 
+# Prevent any Qt application and event loop to spawn when
+# using the QGIS Python app
+os.environ["QT_QPA_PLATFORM"] = "offscreen"
+
 QgsApplication.setPrefixPath(sys.prefix)
 
 qgs = QgsApplication([], False)