[MacPorts] #38385: xsltproc: xsl:import : unable to load urn:docbkx:stylesheet

[MacPorts]

#38385: xsltproc: xsl:import : unable to load urn:docbkx:stylesheet
-------------------------+--------------------------------
 Reporter:  anyberry@…   |      Owner:  macports-tickets@…
     Type:  defect       |     Status:  new
 Priority:  Normal       |  Milestone:
Component:  ports        |    Version:  2.1.3
 Keywords:  docbook xsl  |       Port:  libxslt
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 I have a simple custom xsl stylesheet which has this import:
 <xsl:import href="urn:docbkx:stylesheet"/>
 (in fact what I'm trying to do is built the maven reference book and the
 stylesheet is here: https://github.com/sonatype/maven-reference-
 en/blob/master/epub/epub-custom.xsl)

 when I run a2x, I get this error:

 warning: failed to load external entity "urn:docbkx:stylesheet"
 compilation error: file /Users/rasp/git/maven-reference-en/epub/epub-
 custom.xsl line 7 element import
 xsl:import : unable to load urn:docbkx:stylesheet

 the actual command is:
 xsltproc --stringparam callout.graphics 0 --stringparam navig.graphics 0
 --stringparam admon.textlabel 1 --stringparam admon.graphics 0
 --stringparam html.stylesheet "epub/epub-custom.css" --stringparam
 toc.section.depth 1 --stringparam chunk.section.depth 0  "/Users/rasp/git
 /maven-reference-en/epub/epub-custom.xsl" "/Users/rasp/git/maven-
 reference-en/target/book-mvnref.xml"

 if I run the command without this custom stylesheet, it works properly.

 I think this is something that should work out of the box - for some
 reason the standard stylesheet cannot be found during the import. I
 haven't figured out how to make this work.
 yes, I saw Ticket #35303 but that says that docbook-xsl should fix such a
 problem but it doesn't in my case

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Ticket URL: <https://trac.macports.org/ticket/38385>
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