[tahoe-dev] Downloading pysqlite takes quite a long time

NODA, Kai nodakai at gmail.com
Mon Jan 25 10:31:59 UTC 2010


Hi, all

On machines with Python 2.4.x (CentOS servers,) setup.py wants to
download pysqlite>=2.0.5 as an external package.
My problem is that installation take as long as twenty minutes.
I must endure so many times of timeouts during name resolution of
"pysqlite.org" which seems expired.

One way to circumvent this annoyance is installing pysqlite beforehand
by easy_install.
To my surprise, installation in this way takes less than two minutes,
because timeout of resolving "pysqlite.org" occurs only once.

My question is that what causes this difference, and whether there are
any ways to skip "pysqlite.org" during installation by setup.py .

Thanks,
Kai

P.S. Lengthy logs are pasted below:

=== 1. USING SETUP.PY ===

$ uname -a
Linux [snip] 2.6.18-128.el5 #1 SMP Wed Jan 21 10:41:14 EST 2009 x86_64 x86_64 x86_64 GNU/Linux
$ cat /etc/redhat-release
CentOS release 5.4 (Final)
$ python -V
Python 2.4.3
$ python setup.py build
[snip]
Processing dependencies for allmydata-tahoe==0.0.0
Searching for pysqlite>=2.0.5
Reading http://allmydata.org/source/tahoe/deps/tahoe-dep-sdists/
Reading http://allmydata.org/source/tahoe/deps/tahoe-dep-eggs/
Reading http://pypi.python.org/simple/pysqlite/
Reading http://pysqlite.sourceforge.net/
Reading http://pysqlite.googlecode.com/
Reading http://code.google.com/p/pysqlite/downloads/list
Reading http://pysqlite.org/
Download error: (-3, 'Temporary failure in name resolution') -- Some packages may not be found!
Reading http://pysqlite.org/
Download error: (-3, 'Temporary failure in name resolution') -- Some packages may not be found!
Reading http://initd.org/tracker/pysqlite/wiki/PysqliteDownloads
Reading http://pysqlite.org/
Download error: (-3, 'Temporary failure in name resolution') -- Some packages may not be found!
Reading http://pysqlite.org/
Download error: (-3, 'Temporary failure in name resolution') -- Some packages may not be found!
Reading http://pysqlite.org/
Download error: (-3, 'Temporary failure in name resolution') -- Some packages may not be found!
Reading http://pysqlite.org/
Download error: (-3, 'Temporary failure in name resolution') -- Some packages may not be found!
Reading http://pysqlite.org/
Download error: (-3, 'Temporary failure in name resolution') -- Some packages may not be found!
Reading http://initd.org/pub/software/pysqlite/releases/2.3/2.3.3/
Reading http://pysqlite.org/
Download error: (-3, 'Temporary failure in name resolution') -- Some packages may not be found!
Reading http://pysqlite.org/
Download error: (-3, 'Temporary failure in name resolution') -- Some packages may not be found!
Reading http://initd.org/pub/software/pysqlite/releases/2.3/2.3.4/
Reading http://pysqlite.org/
Download error: (-3, 'Temporary failure in name resolution') -- Some packages may not be found!
Reading http://pysqlite.org/
Download error: (-3, 'Temporary failure in name resolution') -- Some packages may not be found!
Reading http://oss.itsystementwicklung.de/trac/pysqlite
Reading http://oss.itsystementwicklung.de/download/pysqlite/2.5/2.5.0/
Reading http://pysqlite.org/
Download error: (-3, 'Temporary failure in name resolution') -- Some packages may not be found!
Reading http://oss.itsystementwicklung.de/download/pysqlite/2.4/2.4.1/
Reading http://pysqlite.org/
Download error: (-3, 'Temporary failure in name resolution') -- Some packages may not be found!
Reading http://initd.org/pub/software/pysqlite/releases/2.4/2.4.0/
Reading http://pysqlite.org/
Download error: (-3, 'Temporary failure in name resolution') -- Some packages may not be found!
Reading http://pysqlite.org/
Download error: (-3, 'Temporary failure in name resolution') -- Some packages may not be found!
Reading http://pysqlite.org/
Download error: (-3, 'Temporary failure in name resolution') -- Some packages may not be found!
Reading http://pysqlite.org/
Download error: (-3, 'Temporary failure in name resolution') -- Some packages may not be found!
Reading http://pysqlite.org/
Download error: (-3, 'Temporary failure in name resolution') -- Some packages may not be found!
Reading http://pysqlite.org/
Download error: (-3, 'Temporary failure in name resolution') -- Some packages may not be found!
Reading http://pysqlite.org/
Download error: (-3, 'Temporary failure in name resolution') -- Some packages may not be found!
Reading http://initd.org/pub/software/pysqlite/releases/2.3/2.3.5/
Reading http://pysqlite.org/
Download error: (-3, 'Temporary failure in name resolution') -- Some packages may not be found!
Reading http://pysqlite.org/
Download error: (-3, 'Temporary failure in name resolution') -- Some packages may not be found!
Best match: pysqlite 2.5.6
Downloading http://pysqlite.googlecode.com/files/pysqlite-2.5.6.tar.gz
Processing pysqlite-2.5.6.tar.gz
Running pysqlite-2.5.6/setup.py -q bdist_egg --dist-dir /tmp/easy_install-3hF-OG/pysqlite-2.5.6/egg-dist-tmp-JWPadv
  File "build/bdist.linux-x86_64/egg/pysqlite2/test/py25tests.py", line 48
    with self.con:
            ^
SyntaxError: invalid syntax
zip_safe flag not set; analyzing archive contents...
  File "/var/tmp/k_noda/tahoe-HEAD/support/lib/python2.4/site-packages/pysqlite-2.5.6-py2.4-linux-x86_64.egg/pysqlite2/test/py25tests.py", line 48
    with self.con:
            ^
SyntaxError: invalid syntax
Adding pysqlite 2.5.6 to easy-install.pth file

Installed /var/tmp/k_noda/tahoe-HEAD/support/lib/python2.4/site-packages/pysqlite-2.5.6-py2.4-linux-x86_64.egg
[snip]
python setup.py build  78.14s user 7.64s system 6% cpu 21:42.50 total

=== 2. USING EASY_INSTALL ===

Here ~/vt is a symlink to /var/tmp/k_noda/ .

$ cat ~/.pydistutils.cfg
[install]
install_lib = ~/vt/local/lib64/python2.4/site-packages
install_scripts = ~/vt/local/bin
$ sh setuptools-0.6c11-py2.4.egg
[snip]
$ time easy_install pysqlite
Searching for pysqlite
Reading http://pypi.python.org/simple/pysqlite/
Reading http://pysqlite.sourceforge.net/
Reading http://pysqlite.googlecode.com/
Reading http://code.google.com/p/pysqlite/downloads/list
Reading http://pysqlite.org/
Download error: (-3, 'Temporary failure in name resolution') -- Some packages may not be found!
Reading http://initd.org/tracker/pysqlite/wiki/PysqliteDownloads
Reading http://initd.org/pub/software/pysqlite/releases/2.3/2.3.3/
Reading http://initd.org/pub/software/pysqlite/releases/2.3/2.3.4/
Reading http://oss.itsystementwicklung.de/trac/pysqlite
Reading http://oss.itsystementwicklung.de/download/pysqlite/2.5/2.5.0/
Reading http://oss.itsystementwicklung.de/download/pysqlite/2.4/2.4.1/
Reading http://initd.org/pub/software/pysqlite/releases/2.4/2.4.0/
Reading http://initd.org/pub/software/pysqlite/releases/2.3/2.3.5/
Best match: pysqlite 2.5.6
Downloading http://pysqlite.googlecode.com/files/pysqlite-2.5.6.tar.gz
Processing pysqlite-2.5.6.tar.gz
Running pysqlite-2.5.6/setup.py -q bdist_egg --dist-dir /tmp/easy_install-YdjN2D/pysqlite-2.5.6/egg-dist-tmp-BTWdyF
  File "build/bdist.linux-x86_64/egg/pysqlite2/test/py25tests.py", line 48
    with self.con:
            ^
SyntaxError: invalid syntax
zip_safe flag not set; analyzing archive contents...
Adding pysqlite 2.5.6 to easy-install.pth file

Installed /var/tmp/k_noda/local/lib64/python2.4/site-packages/pysqlite-2.5.6-py2.4-linux-x86_64.egg
Processing dependencies for pysqlite
Finished processing dependencies for pysqlite
easy_install pysqlite  1.70s user 0.33s system 2% cpu 1:09.45 total



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