I am uploading a NMU to fix this. Please find the debdiff attached.
diff -Nru gnome-chemistry-utils-0.14.17/debian/changelog
gnome-chemistry-utils-0.14.17/debian/changelog
--- gnome-chemistry-utils-0.14.17/debian/changelog 2021-12-04
14:51:53.000000000 +0000
+++ gnome-chemistry-utils-0.14.17/debian/changelog 2023-10-20
12:17:45.000000000 +0000
@@ -1,3 +1,12 @@
+gnome-chemistry-utils (0.14.17-6.2) unstable; urgency=medium
+
+ * Non-maintainer upload.
+ * Drop unnecessary B-D libgdk-pixbuf2.0-dev. The used parts are implied by
+ libgtk-3-dev. (Closes: #1037376)
+ * Drop unnecessary libgtkglext1-dev. (Closes: #1054277)
+
+ -- Bastian Germann <b...@debian.org> Fri, 20 Oct 2023 12:17:45 +0000
+
gnome-chemistry-utils (0.14.17-6.1) unstable; urgency=medium
* Non-maintainer upload.
diff -Nru gnome-chemistry-utils-0.14.17/debian/control
gnome-chemistry-utils-0.14.17/debian/control
--- gnome-chemistry-utils-0.14.17/debian/control 2021-03-08
14:06:12.000000000 +0000
+++ gnome-chemistry-utils-0.14.17/debian/control 2023-10-20
12:16:39.000000000 +0000
@@ -14,13 +14,11 @@
gnumeric (>= 1.11.6),
intltool (>= 0.40.6),
libcairo2-dev (>= 1.6.0),
- libgdk-pixbuf2.0-dev (>= 2.22.0),
libglib2.0-dev (>= 2.36.0),
libglu1-mesa-dev,
libgoffice-0.10-dev (>= 0.10.12),
libgsf-1-dev (>= 1.14.9),
libgtk-3-dev (>= 3.0.0),
- libgtkglext1-dev (>= 1.0.0),
libopenbabel-dev (>= 3.0.0),
libosmesa6-dev,
libtool (>= 2.2.6),
