671522 - LookupError: unknown encoding: cp720

Status: RESOLVED DUPLICATE of bug 578584

(Firefox Build System :: MozillaBuild, task)

Description

[Khaled Attia]

User Agent: Mozilla/5.0 (Windows NT 6.1; rv:5.0) Gecko/20100101 Firefox/5.0
Build ID: 20110615151330

Steps to reproduce:

cfx run


Actual results:

Traceback (most recent call last):
  File "C:\addon-sdk-1.0\bin\cfx", line 29, in <module>
    cuddlefish.run()
  File "C:\addon-sdk-1.0\python-lib\cuddlefish\__init__.py", line 783, in run
    norun=options.no_run)
  File "C:\addon-sdk-1.0\python-lib\cuddlefish\runner.py", line 293, in run_app
    print >>sys.stderr, "Using binary at '%s'." % runner.binary
LookupError: unknown encoding: cp720

Comment 1

[Khaled Attia]

I fix this problem by download cp720.py [ http://blog.oneortheother.info/wp-content/uploads/2007/11/cp720.zip ] and copied it to C:\mozilla-build\python\Lib\encodings

Comment 2

[Myk Melez [:myk] [@mykmelez]]

It looks like this is the blog post that goes along with that cp720.py workaround:

http://blog.oneortheother.info/tip/python-fix-cp720-encoding/

And this is the longstanding Python bug on the problem:

http://bugs.python.org/issue1616979


Brian: does this seem like something we should work around in the SDK, or would it be better to land cp720.py in MozillaBuild?

Comment 3

[Myk Melez [:myk] [@mykmelez]]

Brian: ping; any thoughts on this?

Comment 4

[Brian Warner [:warner :bwarner]]

hm. I think it'd be better to land it in MozillaBuild.

Really, the fix should be in the most general place possible. It's fixed in
python-2.7 (but missing from py2.6), which is the Right Place. But the
next-most-Right place would be MozillaBuild, since that will also help out
other python programs on cp720-using systems (mozrunner comes to mind.. not
sure of MozillaBuild includes other python-based tools but them too). Adding
it to Jetpack is a last-resort, as any other python programs would also need
their own workarounds.

Is that feasible? Does MozillaBuild include a copy of Python (and its stdlib, such that we could add cp720.py to that directory?).

Comment 5

[Myk Melez [:myk] [@mykmelez]]

Per comment 4, moving this to MozillaBuild's product/component.  Note also bug 578584 on updating the Python in MozillaBuild to 2.7, which would also fix the problem.

Comment 6

[Kyle Huey (Exited; not receiving bugmail, old account, do not use)]

Yeah, we should just update python.