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Thread: Questions on how dependencies are handled

  1. #1
    Join Date
    Nov 2011
    Beans
    2

    Arrow Questions on how dependencies are handled

    Let's assume I have a package which says "I need A or B" for instance
    lsb-graphics which requires libx11-6 or xlibs

    Are there cases where both functionalities are provided by 2 different packages P1 and P2 and if
    yes then how is the choice made between P1 and P2

    On another side, I have a package P which requires mail-transport-agent
    and knowing that the following packages provide this
    citadel-mta
    courier-mta
    dma
    esmtp-run
    exim4-daemon-heavy
    exim4-daemon-light
    lsb-invalid-mta
    masqmail
    msmtp-mta
    nullmailer
    postfix
    sendmail-bin
    ssmtp
    xmail
    what will determine which one will be chosen when I install P

  2. #2
    Join Date
    Oct 2007
    Beans
    240
    Distro
    Ubuntu 10.04 Lucid Lynx

    Re: Questions on how dependencies are handled

    I assume once marked for installation then the dependency check for the second repeated dependency is satisfied. But I don't know the exact implementation of apt and deb so it is only my guess.

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