Warning for xulrunner 1.9.1 users

Beware ! xulrunner 1.9.1 might break some applications like epiphany, galeon, yelp, chmsee, etc.

You have three main options to work around this problem:

  • Set the MOZ_GRE_CONF environment variable to /etc/gre.d/1.9.system.conf
  • Remove the /etc/gre.d/1.9.1.system.conf file
  • Copy the /etc/gre.d/1.9.system.conf file in the ${HOME}/.gre.d directory (which you can create if it doesn’t exist, which is very likely)

For the moment, I identified a definite breakage of epiphany.

Depending on what API the applications use, they might break more or less. What happens is that some of the applications depending on xulrunner-1.9, using the XPCOM standalone glue, give a too broad range of versions of xulrunner they claim to be compatible with. The net result is that the glue can end up loading libxul 1.9.1, which may not be totally binary compatible with what the application actually needs.

The problem may or may not happen on your computer, because the XPCOM glue is half broken in its way to find a proper libxul : it stops at the first one if sees that fits in the given range. This means that depending on the order of the files in the /etc/gre.d directory, you can get a different version of libxul.

The workarounds above ensure libxul 1.9 is always loaded.

2009-07-09 23:13:42+0900

firefox, xulrunner

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