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Editorial Team
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Asked: 2026-05-24T03:46:42+00:00

I am trying to install a local version of the Validator.nu server and it

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I am trying to install a local version of the Validator.nu server and it keeps failing on trying to build the HTML Parser.

It says it can’t find the JAVA_HOME variable which I have set in my .bashrc file and shows correctly when I type “echo $JAVA_HOME” at the prompt

Ideas appreciated thanks

Error output

"hg" pull --update -R build https://bitbucket.org/validator/build/
Not trusting file build/.hg/hgrc from untrusted user dave, group dave
Not trusting file /home/dave/src/checker/build/.hg/hgrc from untrusted user dave, group dave
warning: bitbucket.org certificate with fingerprint 81:2b:08:90:dc:d3:71:ee:e0:7c:b4:75:ce:9b:6c:48:94:56:a1:fe not verified (check hostfingerprints or web.cacerts config setting)
pulling from https://bitbucket.org/validator/build/
warning: bitbucket.org certificate with fingerprint 81:2b:08:90:dc:d3:71:ee:e0:7c:b4:75:ce:9b:6c:48:94:56:a1:fe not verified (check hostfingerprints or web.cacerts config setting)
searching for changes
no changes found
Error: The JAVA_HOME environment variable is not set.
Set the JAVA_HOME environment variable to the pathname of the directory where your JDK is installed.
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1 Answer

  1. Editorial Team

    After tackling this for the last 4 days I have managed to get the validator.nu server running on my local Ubuntu VM and so I thought I would update this thread in case anyone else runs in to the same issues.

    I am still not 100% sure where the original issue with the JAVA_HOME variable was coming from but I suspect (although I am not an expert at this) that it had something to do with the way I was using sudo to run the python build.

    I was initially following the instructions on http://about.validator.nu/#src but using

    $ sudo python build/build.py all

    This was because part of the build needed the correct permissions to work.

    This is my step-by-step process which starts from a clean install of Ubuntu 11.

    • installed ubuntu 11
    • opened the terminal
    • sudo /bin/bash <———– I THINK THIS IS THE CRUCIAL LINE
    • apt-get install mercurial
    • apt-get install subversion
    • apt-get install openjdk-6-jre
    • apt-get install openjdk-6-jdk
    • export JAVA_HOME=/usr/lib/jvm/java-6-openjdk
    • follow rest of http://about.validator.nu/#src instructions

    I’m going to need to do it again when I set this up for the internal network for our build scripts so i’ll edit this if I’ve missed out on anything.

    Hope this saves another person’s headache and lost days!

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