Bug#786651: jython: invoking jython gives a stacktrace and nothing more

[Rogério Brito]

Package: jython
Version: 2.5.3-5
Severity: important

Hi.

I have jython installed on my system that is running testing.

Unfortunately, it seems that some recent upgrade changed the dependencies of
jython and it, now, fails to start with a backtrace. Here is what I get:

$ jython
"my" variable $jythonHome masks earlier declaration in same scope at /usr/bin/jython line 15.
Exception in thread "main" java.lang.NoClassDefFoundError: jnr/posix/POSIXHandler
	at org.python.modules.Setup.<clinit>(Setup.java:29)
	at org.python.core.PySystemState.initBuiltins(PySystemState.java:1047)
	at org.python.core.PySystemState.doInitialize(PySystemState.java:883)
	at org.python.core.PySystemState.initialize(PySystemState.java:802)
	at org.python.core.PySystemState.initialize(PySystemState.java:752)
	at org.python.core.PySystemState.initialize(PySystemState.java:745)
	at org.python.util.jython.run(jython.java:150)
	at org.python.util.jython.main(jython.java:129)
Caused by: java.lang.ClassNotFoundException: jnr.posix.POSIXHandler
	at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
	... 8 more

I don't know exactly which package is the culprit here, which is why I have
not put a higher severity, but since this makes jython unusable, perhaps a
higher severity is in order.  If jython is not really the culprit here, feel
free to reassign this bug as appropriate.

If I manually downgrade many packages related to jython to their versions in
jessie, then I am able to get jython working again.

If any further information is needed, please let me know and I will try my
best to provide them, so that we can have a version of jython that works
fine in sid.


Thanks,

Rogério Brito.

-- System Information:
Debian Release: stretch/sid
  APT prefers testing
  APT policy: (500, 'testing'), (175, 'unstable'), (150, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.0.0-1-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_US.utf-8, LC_CTYPE=pt_BR.utf-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages jython depends on:
ii  antlr3                                           3.2-10
ii  default-jre-headless [java5-runtime-headless]    2:1.7-52
ii  libasm3-java                                     3.3.2-2
ii  libconstantine-java                              0.8.6-5
ii  libguava-java                                    17.0-1
ii  libjffi-java                                     1.0.2-11
ii  libjline-java                                    1.0-2
ii  libjnr-netdb-java                                1.1.4-1
ii  libjnr-posix-java                                1.1.8-3
ii  libjnr-x86asm-java                               1.0.2-2
ii  liblivetribe-jsr223-java                         2.0.6-1
ii  libreadline-java                                 0.8.0.1+dfsg-4
ii  openjdk-7-jre-headless [java5-runtime-headless]  7u79-2.5.5-1
ii  openjdk-8-jre-headless [java5-runtime-headless]  8u45-b14-2
ii  perl                                             5.20.2-4

Versions of packages jython recommends:
ii  default-jdk                    2:1.7-52
ii  openjdk-7-jdk [java-compiler]  7u79-2.5.5-1
ii  openjdk-8-jdk [java-compiler]  8u45-b14-2

Versions of packages jython suggests:
pn  jython-doc               <none>
pn  libmysql-java            <none>
pn  libpostgresql-jdbc-java  <none>
ii  libservlet2.5-java       6.0.41-4

-- no debconf information

-- 
Rogério Brito : rbrito@{ime.usp.br,gmail.com} : GPG key 4096R/BCFCAAAA
http://cynic.cc/blog/ : github.com/rbrito : profiles.google.com/rbrito
DebianQA: http://qa.debian.org/developer.php?login=rbrito%40ime.usp.br