Issues with Installing EPrints on Ubuntu 26.04 - Revision history

Drn@ecs.soton.ac.uk at 11:37, 2 July 2026

2026-07-02T11:37:05Z

Drn@ecs.soton.ac.uk: Updated info as of 13th May 2026

2026-05-13T11:06:35Z

Updated info as of 13th May 2026

Drn@ecs.soton.ac.uk: /* Current Issues */

2026-05-10T12:10:49Z

‎Current Issues

Drn@ecs.soton.ac.uk: /* Current Issues */

2026-05-10T12:09:45Z

‎Current Issues

Drn@ecs.soton.ac.uk: Updated info about XML library issue.

2026-05-10T12:08:56Z

Updated info about XML library issue.

Drn@ecs.soton.ac.uk: Updated to explain the problem in more detail and link to GitHub

2026-05-09T15:00:00Z

Updated to explain the problem in more detail and link to GitHub

Drn@ecs.soton.ac.uk: Added issue with db creation

2026-05-01T15:16:52Z

Added issue with db creation

Drn@ecs.soton.ac.uk: Added placeholder

2026-05-01T14:41:11Z

Added placeholder

New page

As of 1st May 2026, Ubuntu 26.04 is 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.

@@ Line 1: / Line 1: @@
-As of 13th 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.
+As of 2nd July 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 <code>bin/epadmin create pub</code>.  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 <code>XML:LibXML</code> Perl library that ultimately uses the C library <tt>libxml2</tt>.   [https://github.com/eprints/eprints3.4/issues/509 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 [https://github.com/cpan-authors/XML-LibXML/issues/81 this XML::LibXML GitHub issue], which says it has been resolved upstream, which we believe to mean in the libxml2 C library (possibly version 2.15.3).  Ubuntu 26.04 as of 13th May 2026 is still providing libxml2 version 2.15.2, so there will hopefully be an update soon.
+; XML library compatibility 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 <code>bin/epadmin create pub</code>.  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 <code>XML:LibXML</code> Perl library that ultimately uses the C library <tt>libxml2</tt>.   [https://github.com/eprints/eprints3.4/issues/509 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 [https://github.com/cpan-authors/XML-LibXML/issues/81 this XML::LibXML GitHub issue], which says it has been resolved upstream, which we believe to mean in the libxml2 C library (although it does not seem to gave made it into version 2.15.3).  Ubuntu 26.04 as of 2nd July 2026 is still providing libxml2 version 2.15.2, so there will hopefully be an update soon.

@@ Line 1: / Line 1: @@
-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.
+As of 13th 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 <code>bin/epadmin create pub</code>.  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 <code>XML:LibXML</code> Perl library that ultimately uses the C library <tt>libxml2</tt>.  As of 10th May 2026, we have yet to defintively determine why this is happening.  [https://github.com/eprints/eprints3.4/issues/509 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 [https://github.com/cpan-authors/XML-LibXML/issues/113 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 <code>XML::LibXML->new</code> in perl_lib/EPrints/XML/LibXML.pm on lines 69 and 73 is being evaluated,  However, further testing is still required to determine what impact this temporary mitigation may have on EPrints functionality.
+; 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 <code>bin/epadmin create pub</code>.  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 <code>XML:LibXML</code> Perl library that ultimately uses the C library <tt>libxml2</tt>.   [https://github.com/eprints/eprints3.4/issues/509 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 [https://github.com/cpan-authors/XML-LibXML/issues/81 this XML::LibXML GitHub issue], which says it has been resolved upstream, which we believe to mean in the libxml2 C library (possibly version 2.15.3).  Ubuntu 26.04 as of 13th May 2026 is still providing libxml2 version 2.15.2, so there will hopefully be an update soon.

← Older revision		Revision as of 12:10, 10 May 2026
Line 2:		Line 2:

	==== Current Issues ====		==== 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 <code>bin/epadmin create pub</code>. 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 <code>XML:LibXML</code> Perl library that ultimately uses the C library <tt>libxml2</tt>. As of 10th May 2026, we have yet to defintively determine why this is happening. [https://github.com/eprints/eprints3.4/issues/509 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 [https://github.com/cpan-authors/XML-LibXML/issues/113 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 <code>XML::LibXML->new</code> 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.	+	; 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 <code>bin/epadmin create pub</code>. 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 <code>XML:LibXML</code> Perl library that ultimately uses the C library <tt>libxml2</tt>. As of 10th May 2026, we have yet to defintively determine why this is happening. [https://github.com/eprints/eprints3.4/issues/509 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 [https://github.com/cpan-authors/XML-LibXML/issues/113 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 <code>XML::LibXML->new</code> in perl_lib/EPrints/XML/LibXML.pm on lines 69 and 73 is being evaluated, However, further testing is still required to determine what impact this temporary mitigation may have on EPrints functionality.

← Older revision		Revision as of 12:09, 10 May 2026
Line 2:		Line 2:

	==== Current Issues ====		==== 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 <code>bin/epadmin create pub</code>. 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 <code>XML:LibXML</code> Perl library that ultimately uses the C library <tt>libxml2</tt>. As of 10th May 2026, we have yet to defintively determine why this is happening. [https://github.com/eprints/eprints3.4/issues/509 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 [https://github.com/cpan-authors/XML-LibXML/issues/113 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 ~~working around~~ of disabling "expand_entities" and "load_ext_dtd" options in the calls to <code>XML::LibXML->new</code> 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.	+	; 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 <code>bin/epadmin create pub</code>. 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 <code>XML:LibXML</code> Perl library that ultimately uses the C library <tt>libxml2</tt>. As of 10th May 2026, we have yet to defintively determine why this is happening. [https://github.com/eprints/eprints3.4/issues/509 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 [https://github.com/cpan-authors/XML-LibXML/issues/113 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 <code>XML::LibXML->new</code> 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.

@@ Line 1: / Line 1: @@
-As of 9th 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.
+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 <code>bin/epadmin create pub</code>.  It will exhibit itself with the following error message or possibly one that relates to memory allocation (malloc) or free commands.  This is due to how EPrints make use of the <code>XML:LibXML</code> Perl library that ultimately use the C library <tt>libxml2</tt>.  As of 9th May 202 we have yet to diagnose why this is happening.  [https://github.com/eprints/eprints3.4/issues/509 This GitHub issue] first raised for what appears to be the same issue with FreeBSD 14.3 provides some more detail about this problem.
+; 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 <code>bin/epadmin create pub</code>.  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 <code>XML:LibXML</code> Perl library that ultimately uses the C library <tt>libxml2</tt>.  As of 10th May 2026, we have yet to defintively determine why this is happening.  [https://github.com/eprints/eprints3.4/issues/509 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 [https://github.com/cpan-authors/XML-LibXML/issues/113 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 working around of disabling "expand_entities" and "load_ext_dtd" options in the calls to <code>XML::LibXML->new</code> 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.

← Older revision		Revision as of 15:16, 1 May 2026
Line 1:		Line 1:
	As of 1st May 2026, Ubuntu 26.04 is 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.		As of 1st May 2026, Ubuntu 26.04 is 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 ====
		+	; Segfault when creating EPrints database : If you use <code>bin/epadmin create pub</code> to create a new archive, once you approve the creation of the archive's database rather than prompting you for an appropriate username and password for a superuser that can create new database you get a segfault error like below. A resolution to this issue is currently being investigated.
		+	Segmentation fault (core dumped) bin/epadmin create pub