Hello, The generation of the documentation of the Gnome projects is broken on core-updates-frozen. Passing the "-Dgtk_doc=true" build option to evince or libhandy packages results in the following error: --8<---------------cut here---------------start------------->8--- Traceback (most recent call last): File "/gnu/store/6dk7w7g7kbr5cnp0kiym3f68l1g26xbx-python-3.9.6/lib/python3.9/shutil.py", line 806, in move os.rename(src, real_dst) FileNotFoundError: [Errno 2] No such file or directory: '/home/mathieu/libhandy/_build/doc/html/libhandy.devhelp2' -> '/home/mathieu/libhandy/_build/doc/html/libhandy-1.devhelp2' During handling of the above exception, another exception occurred: --8<---------------cut here---------------end--------------->8--- According to strace, xsltproc is called to generate the libhandy.devhelp2 document this way: --8<---------------cut here---------------start------------->8--- /gnu/store/5fy04b79bmzajbgz21jibkgmn38frkrx-libxslt-1.1.34/bin/xsltproc --path /home/mathieu/libhandy/doc:/home/mathieu/libhandy/_build/doc --nonet --xinclude --stringparam gtkdoc.bookname libhandy --stringparam gtkdoc.version 1.33.1 /gnu/store/vh5gjvlbns7s26r8x6282165xqrk137l-gtk-doc-1.33.2/share/gtk-doc/data/gtk-doc.xsl ../handy-docs.xml --8<---------------cut here---------------end--------------->8--- However the final document never shows up. The output log contains several errors such as this one: --8<---------------cut here---------------start------------->8--- Error: no ID for constraint linkend: "GtkDrawingArea". --8<---------------cut here---------------end--------------->8--- that should be harmless. Thanks, Mathieu