GNU bug report logs - #21675
Guix environment is incredibly slow when using Python2 packages

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From: Cyril Roelandt <tipecaml <at> gmail.com>
To: 21675 <at> debbugs.gnu.org
Subject: bug#21675: Guix environment is incredibly slow when using Python2 packages
Date: Mon, 12 Oct 2015 23:31:02 +0200

Let's look at the following command, which behaves as expected:

$ time guix environment --ad-hoc --pure python-pbr python-babel
python-iso8601 python-debtcollector python-netaddr python-oslo.config
python-oslo.i18n python-oslo.serialization python-oslo.utils
python-prettytable python-requests python-six python-stevedore
python-coverage python-discover python-fixtures python-keyring
python-lxml python-mock python-oauthlib python-oslotest python-pycrypto
python-requests-mock python-sphinx python-testrepository
python-testresources python-testtools python-webob python-bandit
python-setuptools python-pbr openssl python --exec="echo done"
done

real    0m5.043s
user    0m4.672s
sys     0m0.148s

Its Python2 counterpart is incredibly slow:

$ time guix environment --ad-hoc --pure python2-pbr python2-babel
python2-iso8601 python2-debtcollector python2-netaddr python2-oslo.config
python2-oslo.i18n python2-oslo.serialization python2-oslo.utils
python2-prettytable python2-requests python2-six python2-stevedore
python2-coverage python2-discover python2-fixtures
python2-keyring python2-lxml python2-mock python2-oauthlib
python2-oslotest python2-pycrypto python2-requests-mock
python2-sphinx python2-testrepository
python2-testresources python2-testtools python2-webob python2-bandit
python2-setuptools python2-pbr openssl python-2 --exec="echo done"
warning: failed to install locale: Invalid argument
done

real	9m16.557s
user	9m7.868s
sys	0m8.128s


This makes "guix environment" unusable with Python 2.


Cyril.

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