Hmm, it seems now the update system is also affected by the $PYTHONPATH
environment variable setting -
with PYTHONPATH=/usr/lib/python2.7:/usr/local/lib/python2.7 :
$ apt-get dist-upgrade
fails with :
Fetched 41.2 MB in 15s (2,623 kB/s)
(Reading database ... 552135 files and directories currently installed.)
Preparing to unpack .../python3-problem-report_2.14.1-0ubuntu3.6_all.deb ...
Fatal Python error: Py_Initialize: Unable to get the locale encoding
File "/usr/lib/python2.7/encodings/__init__.py", line 123
raise CodecRegistryError,\
^
SyntaxError: invalid syntax
Aborted
dpkg: warning: subprocess old pre-removal script returned error exit status 134
dpkg: trying script from the new package instead ...
Fatal Python error: Py_Initialize: Unable to get the locale encoding
File "/usr/lib/python2.7/encodings/__init__.py", line 123
raise CodecRegistryError,\
^
SyntaxError: invalid syntax
Aborted
dpkg: error processing archive
/var/cache/apt/archives/python3-problem-report_2.14.1-0ubuntu3.6_all.deb
(--unpack):
subprocess new pre-removal script returned error exit status 134
Fatal Python error: Py_Initialize: Unable to get the locale encoding
File "/usr/lib/python2.7/encodings/__init__.py", line 123
raise CodecRegistryError,\
^
SyntaxError: invalid syntax
Aborted
dpkg: error while cleaning up:
subprocess installed post-installation script returned error exit status 134
Preparing to unpack .../python3-apport_2.14.1-0ubuntu3.6_all.deb ...
Fatal Python error: Py_Initialize: Unable to get the locale encoding
File "/usr/lib/python2.7/encodings/__init__.py", line 123
raise CodecRegistryError,\
^
SyntaxError: invalid syntax
Aborted
dpkg: warning: subprocess old pre-removal script returned error exit status 134
dpkg: trying script from the new package instead ...
Fatal Python error: Py_Initialize: Unable to get the locale encoding
File "/usr/lib/python2.7/encodings/__init__.py", line 123
raise CodecRegistryError,\
^
SyntaxError: invalid syntax
Aborted
dpkg: error processing archive
/var/cache/apt/archives/python3-apport_2.14.1-0ubuntu3.6_all.deb (--unpack):
subprocess new pre-removal script returned error exit status 134
Fatal Python error: Py_Initialize: Unable to get the locale encoding
File "/usr/lib/python2.7/encodings/__init__.py", line 123
raise CodecRegistryError,\
^
SyntaxError: invalid syntax
Aborted
dpkg: error while cleaning up:
I really think that tools such as gdb and dpkg should take care of managing
critical environment variable settings
like $PYTHONPATH if they intend to use python .
It is only because I knew of this bug in advance that I did not spend ages
determining the cause of the problem was $PYTHONPATH .
To solve this issue in the past, I did write a /usr/bin/python wrapper that ,
dependant on environment variable settings, would run
either the i686 or x86_64 python binary of the required $PYTHON_VERSION . I
could attach this "C" program to this bug report if you want...
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https://bugs.launchpad.net/bugs/1398033
Title:
python breaks gdb
Status in apport package in Ubuntu:
Confirmed
Bug description:
The gdb program fails with settings such as PYTHONPATH in the
environment.
I have no interest in using python or in using gdb to debug python
programs .
I want to use GDB to debug a normal GCC built executable, yet these internal
gdb python dependencies prevent me from doing so .
GDB should be shipped without python support ; python support should be an
optional add-on sub-package for python programmers.
I have to compile GDB without python support to overcome this problem.
For instance, with a setting of
PYTHONPATH=/usr/lib/python2.7:/usr/local/lib/python2.7/site-packages ,
because I have some python packages installed in
/usr/local/lib/python2.7/site-packages, GDB refuses to initialize:
$ export LANG=C
$ export LC_ALL=POSIX
$ gdb --args $MY_C_PROGRAMS_COMMAND_LINE
Fatal Python error: Py_Initialize: Unable to get the locale encoding
File "/usr/lib/python2.7/encodings/__init__.py", line 123
raise CodecRegistryError,\
^
SyntaxError: invalid syntax
Aborted
The same python sickness infects ubuntu-bug :
$ ubuntu-bug
Fatal Python error: Py_Initialize: Unable to get the locale encoding
File "/usr/lib/python2.7/encodings/__init__.py", line 123
raise CodecRegistryError,\
^
SyntaxError: invalid syntax
Aborted
However, python and python programs run fine with my $PYTHONPATH
setting - only gdb and ubuntu-bug do not .
If I could, I'd remove python entirely from my system, but I have to
use a system set up by work which includes python .
But I expect to be able to use GDB without python being installed ,
and regardless of any environment variable setting .
This problem obliges me to recompile gdb without python support and install
it over the system gdb , which I have to do
after each apt-get 'dist-upgrade' , or carefully remove gdb from the
dist-upgrade every time.
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