Edward Diener wrote:
I can install Python 2.4 on the Fedora 3 Linux system, but after I do a number of Linux utilities and commands, like yum, stop working because they were dependent on the Python 2.3 installation. What happens is that Python 2.4 replaces the /usr/bin/python module with the Python 2.4 version. If I replace /usr/bin/python with the Python 2.3 version executable, which is still on my system, that all the aforesaid modules depend on, they start working again, but I can no longer execute modules, like IDLE, which was part of my Python 2.4 distribution.
What is the solution to this ? The operating system was installed with Python 2.3 and the development libraries but no tools, doc, or otherwise. I have installed Python 2.4 with all the RPMs and copied down the Python 2.4 documentation to my machine ( since python24-docs.rpm gives one very little ). I would naturally like to use Python 2.4 without killing all the commands that depend on Python 2.3. No doubt these commands have their modules in the site libraries for Python 2.3. Of course I would love to update these dependencies to use Python 2.4 but newer RPMs for these commands do not exist.
I do not know whether this is a Python problem or a Fedora 3 problem but I thought I would ask here first and see if anybody else had the same problem. I imagine the problem might exist on other Linux systems.
Actually the Fedora RPMS supplied on the Python website are fine: http://www.python.org/2.4.1/rpms.html Quoting from that page:
# Q) Is it safe to install these RPMs on a Red Hat system? Will they over-write the system python and cause problems with other Red Hat applications that expect a different version of Python?
# A) The RPMs that start with "python2.4" are built to not interfere with the system Python. They install as "/usr/bin/python2.4" and will not conflict with the system Python unless you are running on a system that ships the a version of Python which has the same major/minor number.
To invoke the interpreter with these packages, you will explicitly have to run "python2.4". Note that all Python RPMs provided by Python.org and Red Hat provide a "/usr/bin/python2.4" (or similar, with major/minor number), even if they also provide "/usr/bin/python". So, yes, it should be safe.
Note that you may need to build and install a second copy of any packages which you need access to with the supplemental version of Python. You can build packages of these files for the Python 2.4 interpreters for packages which use Distutils, by using the command "python2.4 setup.py bdist_rpm".
This is by far the preferred way to install a different version of Python to the default version provided with a distribution, as you don't then conflict with packages that require the default version.
I do have a separate package installed for Python2.4 and it coexists with Python2.3. The real problem is that a great number of other packages, which are initially part of the system, depend on Python2.3 so I must leave /usr/bin/python as Python2.3. I do not know of a way to reinstall these other packages to use Python2.4 instead. Does the line above, "python2.4 setup.py bdist_rpm" mean that I am supposed to run this against each of these other package's rpm files and substitute for "bdist_rpm" the name of the rpm file ?
Also, it is better to do it like this using real packages than to rename files manually. I have used the above successfully on Fedora Core 3 (and other similar versions on other distro versions), if it doesn't work for you there is a source RPM available to rebuild from
Is "bdist_rpm" the source rpm for these packages which currently depend on Python2.3 ?
Further help getting my Fedora 3 packages which depend on Python2.3 to use Python2.4 would be appreciated.
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