How can we get pre-release build of Jython?

Hi all!

How can we get current build of Jython? Instructions found here 
http://www.jython.org/archive/21/docs/compile.html seems to be very old 
and outdated.

Our problem is that 2.7.1 version is unusable for us because of 
http://bugs.jython.org/issue2609 that I reported and that is now marked 
as fixed. As we know it takes years for new releases of jython, so there 
is no point waiting for the next release.

As a workaround, we were using 2.7.1b3 (that is not affected by the 
bug), until stumbled upon the problem with outdated version of jnr.posix 
library that is included into jython 2.7.1b3 jar.

We are trying to use TestContainers (https://www.testcontainers.org/), 
this library depends on newer jnr.posix, but older classes from jython 
are loaded, so we are in jar hell. It seems that current jython uses 
newer jnr.posix, but, once again, we cannot use 2.7.1 release.

What would you suggest?

Regards,

Ivan

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