From ec9976d429bf539c0cbecc29990fc6594adb836f Mon Sep 17 00:00:00 2001
From: Ivan Mincik <ivan.mincik@gmail.com>
Date: Tue, 13 Jan 2026 12:44:00 +0100
Subject: [PATCH] qgis: fix loading of spatialite extension

Add fix applied in upstream QGIS in
https://github.com/qgis/QGIS/pull/64500
---
 pkgs/applications/gis/qgis/spatialite-path.patch | 14 ++++++++++++++
 pkgs/applications/gis/qgis/unwrapped-ltr.nix     |  3 +++
 pkgs/applications/gis/qgis/unwrapped.nix         |  3 +++
 3 files changed, 20 insertions(+)
 create mode 100644 pkgs/applications/gis/qgis/spatialite-path.patch

diff --git a/pkgs/applications/gis/qgis/spatialite-path.patch b/pkgs/applications/gis/qgis/spatialite-path.patch
new file mode 100644
index 000000000000..cdfd0b8cef83
--- /dev/null
+++ b/pkgs/applications/gis/qgis/spatialite-path.patch
@@ -0,0 +1,14 @@
+diff --git a/python/utils.py b/python/utils.py
+index 1234567890..abcdef1234 100644
+--- a/python/utils.py
++++ b/python/utils.py
+@@ -938,6 +938,7 @@ def spatialite_connect(*args, **kwargs):
+     con = sqlite3.dbapi2.connect(*args, **kwargs)
+     con.enable_load_extension(True)
+     cur = con.cursor()
+     libs = [
++        ("@spatialiteLib@", "sqlite3_modspatialite_init"),
+         # SpatiaLite >= 4.2 and Sqlite >= 3.7.17, should work on all platforms
+         ("mod_spatialite", "sqlite3_modspatialite_init"),
+         # SpatiaLite >= 4.2 and Sqlite < 3.7.17 (Travis)
+         ("mod_spatialite.so", "sqlite3_modspatialite_init"),
diff --git a/pkgs/applications/gis/qgis/unwrapped-ltr.nix b/pkgs/applications/gis/qgis/unwrapped-ltr.nix
index 55d106ec4730..c0154e2e1bf7 100644
--- a/pkgs/applications/gis/qgis/unwrapped-ltr.nix
+++ b/pkgs/applications/gis/qgis/unwrapped-ltr.nix
@@ -146,6 +146,9 @@ mkDerivation rec {
       pyQt5PackageDir = "${py.pkgs.pyqt5}/${py.pkgs.python.sitePackages}";
       qsciPackageDir = "${py.pkgs.qscintilla-qt5}/${py.pkgs.python.sitePackages}";
     })
+    (replaceVars ./spatialite-path.patch {
+      spatialiteLib = "${libspatialite}/lib/mod_spatialite.so";
+    })
   ];
 
   # Add path to Qt platform plugins
diff --git a/pkgs/applications/gis/qgis/unwrapped.nix b/pkgs/applications/gis/qgis/unwrapped.nix
index 85ae38bb6f1c..33b9068361b4 100644
--- a/pkgs/applications/gis/qgis/unwrapped.nix
+++ b/pkgs/applications/gis/qgis/unwrapped.nix
@@ -150,6 +150,9 @@ mkDerivation rec {
       pyQt5PackageDir = "${py.pkgs.pyqt5}/${py.pkgs.python.sitePackages}";
       qsciPackageDir = "${py.pkgs.qscintilla-qt5}/${py.pkgs.python.sitePackages}";
     })
+    (replaceVars ./spatialite-path.patch {
+      spatialiteLib = "${libspatialite}/lib/mod_spatialite.so";
+    })
   ];
 
   # Add path to Qt platform plugins