diff --git a/pkgs/development/python-modules/mat2/default.nix b/pkgs/development/python-modules/mat2/default.nix
index 31bf90f7f0ae..80719e1076b5 100644
--- a/pkgs/development/python-modules/mat2/default.nix
+++ b/pkgs/development/python-modules/mat2/default.nix
@@ -47,6 +47,11 @@ buildPythonPackage rec {
     ./executable-name.patch
     # hardcode path to mat2 executable
     ./tests.patch
+    # fix gobject-introspection typelib path for Nautilus extension
+    (substituteAll {
+      src = ./fix_poppler.patch;
+      poppler_path = "${poppler_gi}/lib/girepository-1.0";
+    })
   ];
 
   postPatch = ''
@@ -76,7 +81,7 @@ buildPythonPackage rec {
     install -Dm 444 data/mat2.svg -t "$out/share/icons/hicolor/scalable/apps"
     install -Dm 444 doc/mat2.1 -t "$out/share/man/man1"
     install -Dm 444 nautilus/mat2.py -t "$out/share/nautilus-python/extensions"
-    buildPythonPath "$out $pythonPath"
+    buildPythonPath "$out $pythonPath $propagatedBuildInputs"
     patchPythonScript "$out/share/nautilus-python/extensions/mat2.py"
   '' + lib.optionalString dolphinIntegration ''
     install -Dm 444 dolphin/mat2.desktop -t "$out/share/kservices5/ServiceMenus"
diff --git a/pkgs/development/python-modules/mat2/fix_poppler.patch b/pkgs/development/python-modules/mat2/fix_poppler.patch
new file mode 100644
index 000000000000..02bdbb6345dc
--- /dev/null
+++ b/pkgs/development/python-modules/mat2/fix_poppler.patch
@@ -0,0 +1,14 @@
+diff --git a/nautilus/mat2.py b/nautilus/mat2.py
+index 11e6986..5a0e68f 100644
+--- a/nautilus/mat2.py
++++ b/nautilus/mat2.py
+@@ -22,6 +22,9 @@ import gi
+ gi.require_version('Nautilus', '3.0')
+ gi.require_version('Gtk', '3.0')
+ gi.require_version('GdkPixbuf', '2.0')
++gi.require_version('GIRepository', '2.0')
++from gi.repository import GIRepository
++GIRepository.Repository.prepend_search_path('@poppler_path@')
+ from gi.repository import Nautilus, GObject, Gtk, Gio, GLib, GdkPixbuf
+ 
+ from libmat2 import parser_factory