We used to have /usr/bin/virtualenv-2 and /usr/bin/virtualenv in
python2-virtualenv. /usr/bin/virtualenv-3 in python3-virtualenv.
As of https://bugzilla.redhat.com/show_bug.cgi?id=1599422 this will
change on F29+. There will be just one /usr/bin/virtualenv.
If you need to specify python version of the created virtual
environment, use --python/-p:
$ virtualenv -p /usr/bin/python2.7 <venv_name>
$ virtualenv -p python3.7 <venv_name>
$ virtualenv -p pypy2 <venv_name>
$ virtualenv -p /opt/tauthon/bin/tauthon2.8 <venv_name>
If you omit -p, the Python version will be 3.7 on F29+, 2.7 before that.
I recommend always using the -p option explicitly to avoid surprises.
If you have Python 3.4+ (including PyPy), you can use the standard
library venv module instead (I recommend that):
$ python3.7 -m venv <venv_name>
$ pypy3 -m venv <venv_name>
Unlike virtualenv, here the interpreter that runs the venv module is the
same that will be used in the virtual environment.
If you really need to **run** virtualenv using python2, you can use -m:
$ python2 -m virtualenv --python=python3.7 <venv_name>
If you need to BuildRequire virtualenv from your packages, you can use:
BuildRequires: virtualenv
(once the change is done on F29+), or:
BuildRequires: /usr/bin/virtualenv
(already now on any Fedora version)
PS virtualenv-2 and virtualenv-3 were Fedora specific hacks.
--
Miro Hrončok
--
Phone: +420777974800
IRC: mhroncok
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