Re: What is the proper way to handle python3 python36 in RHEL7

Erinn Looney-Triggs <erinn.looneytriggs@xxxxxxxxx> · Tue, 31 Mar 2020 15:40:51 -0600



    On 3/31/20 3:23 PM, Miro Hrončok wrote:

    
      %{python3} = python3
        

      %{python3} = /usr/bin/python3
      

      At least in Fedora. In EPEL, most likely as well.
      

      See
        https://bugzilla.redhat.com/show_bug.cgi?id=1812665
        

        There's a bug in the macros.
        

      But that bug has nothing to do with either %python3 or
      %python3_pkgversion.
      

      Requires: %{python3}
        

        Requires: %{python3}-dbus
        

      What does this supposed to evaluate to?
      

    Yeah my apologies I left out the most important part of the spec
      file:
    %global python3 python%{python3_pkgversion}
%global python3_other python%{python3_other_pkgversion}

    
      Anyway, the inconsistency problem is:
      

      python36-dbus on EPEL 7 does not provide python3-dbus (can be
      fixed by adding %python_provide %{name} to the EPEL package)
      

    Ok so this would be a bug to file against the package then.
      Thanks.
    

      python3-dbus in RHEL 8 does not provide python36-dbus (can be
      fixed by changing RHEL's %python_provide and rebuilding the RHEL
      package, not sure if that will go trough)
      

    Understandably.
    

      I am looking into python3_pkgversion macro
        but that doesn't seem to be correct either.
        

      This should work on both EPEL 7 and EPEL 8:
      

          Requires: python%{python3_pkgversion}-dbus
      

      Doesn't it?
      

          $ mock -r epel-7-x86_64 shell
      

          <mock-chroot> sh-4.2# rpm --eval '%python3_pkgversion'
      

          36
      

          $ mock -r epel-8-x86_64 shell
      

          <mock-chroot> sh-4.4# rpm --eval '%python3_pkgversion'
      

          3
      

    Interestingly... no it did not and the reason is I built against
      rhel-7-x86_64 in mock not epel-7-x86_64. I believe there is a
      macro override for epel-7-x86_64 hence why I was getting a
      dependency against python3-dbus.
    I finally ended up doing this for the moment, which I do not like
      very much and I will probably fix here shortly:
    %if 0%{?rhel} == 7
Requires: python36-dbus
%else
Requires: %{python3}-dbus
%endif
    

    Thanks all for all the good information, it is appreciated.
    -Erinn

    
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