How to unset an environment variable in Ant's and/or tasks?
I have an Ant project that must install Jython, and for the Jython installation to work properly, the JYTHON_HOME environment variable must not be set.
Ant's <java> and <exec> tasks to not seem to support setting only, not unsetting. So, I am forced to make the caller of my build.xml unset the environment variable for me, like so:
<macrodef name="install-jython">
<sequential>
<property environment="env"/>
<fail if="env.JYTHON_HOME" message="You must unset JYTHON_HOME to install jython."/>
<java jar="${basedir}/ext/lib/jython-installer.jar" fork="true" dir="${basedir}/ext">
<arg line="-s -d jython -e demo -e doc"/>
</java>
</sequential>
</macrodef>
I tried setting JYTHON_HOME to the empty string, but that doesn't work:
<java jar="${basedir}/ext/lib/jython-installer.jar" fork="true" dir="${basedir}/ext">
<arg line="-s -d jython -e demo -e doc"/>
<env key="JYTHON_HOME" value=""/>
</java>
The Jython installer really needs that environment variable not to exist at all.
ant environment-variables jython
asked Nov 15 '18 at 17:34
David CharlesDavid Charles
1,0691026
add a comment |
I have an Ant project that must install Jython, and for the Jython installation to work properly, the JYTHON_HOME environment variable must not be set.
Ant's <java> and <exec> tasks to not seem to support setting only, not unsetting. So, I am forced to make the caller of my build.xml unset the environment variable for me, like so:
<macrodef name="install-jython">
<sequential>
<property environment="env"/>
<fail if="env.JYTHON_HOME" message="You must unset JYTHON_HOME to install jython."/>
<java jar="${basedir}/ext/lib/jython-installer.jar" fork="true" dir="${basedir}/ext">
<arg line="-s -d jython -e demo -e doc"/>
</java>
</sequential>
</macrodef>
I tried setting JYTHON_HOME to the empty string, but that doesn't work:
<java jar="${basedir}/ext/lib/jython-installer.jar" fork="true" dir="${basedir}/ext">
<arg line="-s -d jython -e demo -e doc"/>
<env key="JYTHON_HOME" value=""/>
</java>
The Jython installer really needs that environment variable not to exist at all.
ant environment-variables jython
asked Nov 15 '18 at 17:34
David CharlesDavid Charles
1,0691026
You can just unset it with bash by using theexectask
– CAustin
Dec 1 '18 at 1:28
add a comment |
I have an Ant project that must install Jython, and for the Jython installation to work properly, the JYTHON_HOME environment variable must not be set.
Ant's <java> and <exec> tasks to not seem to support setting only, not unsetting. So, I am forced to make the caller of my build.xml unset the environment variable for me, like so:
<macrodef name="install-jython">
<sequential>
<property environment="env"/>
<fail if="env.JYTHON_HOME" message="You must unset JYTHON_HOME to install jython."/>
<java jar="${basedir}/ext/lib/jython-installer.jar" fork="true" dir="${basedir}/ext">
<arg line="-s -d jython -e demo -e doc"/>
</java>
</sequential>
</macrodef>
I tried setting JYTHON_HOME to the empty string, but that doesn't work:
<java jar="${basedir}/ext/lib/jython-installer.jar" fork="true" dir="${basedir}/ext">
<arg line="-s -d jython -e demo -e doc"/>
<env key="JYTHON_HOME" value=""/>
</java>
The Jython installer really needs that environment variable not to exist at all.
ant environment-variables jython
asked Nov 15 '18 at 17:34
David CharlesDavid Charles
1,0691026
I have an Ant project that must install Jython, and for the Jython installation to work properly, the JYTHON_HOME environment variable must not be set.
Ant's <java> and <exec> tasks to not seem to support setting only, not unsetting. So, I am forced to make the caller of my build.xml unset the environment variable for me, like so:
<macrodef name="install-jython">
<sequential>
<property environment="env"/>
<fail if="env.JYTHON_HOME" message="You must unset JYTHON_HOME to install jython."/>
<java jar="${basedir}/ext/lib/jython-installer.jar" fork="true" dir="${basedir}/ext">
<arg line="-s -d jython -e demo -e doc"/>
</java>
</sequential>
</macrodef>
I tried setting JYTHON_HOME to the empty string, but that doesn't work:
<java jar="${basedir}/ext/lib/jython-installer.jar" fork="true" dir="${basedir}/ext">
<arg line="-s -d jython -e demo -e doc"/>
<env key="JYTHON_HOME" value=""/>
</java>
The Jython installer really needs that environment variable not to exist at all.
ant environment-variables jython
ant environment-variables jython
asked Nov 15 '18 at 17:34
David CharlesDavid Charles
1,0691026
asked Nov 15 '18 at 17:34
David CharlesDavid Charles
1,0691026
asked Nov 15 '18 at 17:34
David CharlesDavid Charles
1,0691026
asked Nov 15 '18 at 17:34
David CharlesDavid Charles
1,0691026
asked Nov 15 '18 at 17:34
David CharlesDavid Charles
1,0691026
1,0691026
You can just unset it with bash by using theexectask
– CAustin
Dec 1 '18 at 1:28
add a comment |
You can just unset it with bash by using theexectask
– CAustin
Dec 1 '18 at 1:28
You can just unset it with bash by using the
exec task– CAustin
Dec 1 '18 at 1:28
You can just unset it with bash by using the
exec task– CAustin
Dec 1 '18 at 1:28
add a comment |
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You can just unset it with bash by using the
exectask– CAustin
Dec 1 '18 at 1:28