Issues with Installing EPrints on Ubuntu 26.04

As of 10th May 2026, Ubuntu 26.04 is still under testing to determine if EPrints can be successfully installed and if so if there are any issues with doing this, which require a different approach from the general approach for installing EPrints on Debian/Ubuntu Linux.

Current Issues

XML library compatability problems 

This will first occur at the point where you complete the credentials you want to use for your archive's database whilst you are running bin/epadmin create pub. It will exhibit itself as either a segmentation fault or an error with the memory allocation (malloc) or free commands. This is due to EPrints use of the XML:LibXML Perl library that ultimately uses the C library libxml2. As of 10th May 2026, we have yet to defintively determine why this is happening. This GitHub issue first raised for what appears to be the same issue with FreeBSD 14.3 provides some more detail about this problem. It is likely this relates to this XML::LibXML GitHub issue, so it may be a while before the libxml-libxml-perl package is updated but the XML::LibXML package on CPAN will likely be updated more promptly. Currently a possible workaround of disabling "expand_entities" and "load_ext_dtd" options in the calls to XML::LibXML->new perl_lib/EPrints/XML/LibXML.pm on lines 69 and 73. However, further testing is required to determine what impact this temporary mitigation may have on EPrints functionality.