[arch-general] An archlinux-python package for managing system default python version?

[Chi Hsuan Yen]

Borja Thanks a lot for the information. This is exactly what I want.
However, as Martti states, I hope such workarounds are not necessary
anymore as soon as possible.

On 24 January 2015 at 00:57, Borja <borja at libcrack.so> wrote:

>
> Does this .bashrc hack for for you maybe? :-)
>
>
> ## Toogle between python versions
> python-toggle(){
>
>     local RED="\e[0;31m"
>     local GREEN="\e[0;32m"
>     local RESET="\e[0;0m"
>
>     test -z "$1" || v="$1"
>     local bins=('python' 'python-config' 'pip')
>     cd /usr/bin
>     for bin in ${bins[@]}; do
>         test -h $bin || {
>             echo -e "${RED}ERROR:${RESET} cannot find $PWD/$bin"
>             return 1
>         }
>     done
>     echo -e ">> ${RED}Disabling $(python -V 2>&1)${RESET}\007"
>     if [[ python -ef python3 || "python${v}" == "python3" ]]; then
>         rm python python-config pip
>         ln -s python2 python
>         ln -s python2-config python-config
>         ln -s pip2 pip
>     elif [[ python -ef python2 || "python${v}" == "python2" ]]; then
>         rm python python-config pip
>         ln -s python3 python
>         ln -s python3-config python-config
>         ln -s pip3 pip
>     else
>         echo -e "${RED}ERROR:${RESET} cannot find link /usr/bin/$bin"
>         cd - > /dev/null
>         return 2
>     fi
>     echo -e ">> ${GREEN}Enabled $(python -V 2>&1)${RESET}\007"
>     cd - > /dev/null
> }
>
>
> El vie, 23-01-2015 a las 21:51 +0800, Chi Hsuan Yen escribió:
> > Dear Arch enthusiasts,
> >
> > The package extra/java-runtime-common provides a convenient script
> > archlinux-java to handle co-existing JDK/JRE versions. I can use it to
> > switch between different versions of java implementations to accomplish
> > numerous tasks from testing the compatibilities of my programs to running
> > third party applications targeting on different platforms. Now I hope
> > there's also a simple script for the same thing but for python. On the
> > system, most of the scripts are written for python2 and some other
> scripts
> > are python3-specific. In most cases it's not a problem because I can fix
> > the scripts or use some tricks like $PATH to ensure the correct execution
> > of the programs. However, in large projects, doing either is
> time-consuming
> > and costly. Recently I'm building CyanogenMod on Arch Linux. It includes
> > lots of python scripts in the build system, and most of them requires
> > python2. Using the tip provided on the article about Python on ArchWiki
> > prevents lots of problems, but, however, some scripts have the shebang
> line
> > "#!/usr/bin/env python" or are invoked by some command like
> > "/usr/bin/python ...". I have to change the link /usr/bin/python to
> > pointing to python2 for further progress on building and changed it back
> > for my daily use. If there's an archlinux-python script, lots of time on
> > battling the difference between python2 and python3 does not exist
> anymore,
> > which I believe lots of users can benefit from it. Any ideas?
> >
> > Best Regards,
> >
> > Yen Chi Hsuan
>
> --
>
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>
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>