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41 lines
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.. title: Minimum Software Versions
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.. slug: 2011/05/22/minimum-software-versions
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.. date: 2011-05-22 12:05:00 UTC
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.. tags:
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.. description:
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About 2 and a half years ago, when we first started development on
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OpenLP 2.0, we had a look at all the technologies out there in order to
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decide what would be the best technologies to use in order to make a
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cross-platform version of OpenLP a reality. We settled on two in
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particular, a language called Python, and a graphical toolkit called Qt.
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In those days, the latest version of Python was 2.5 and the latest
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version of Qt was 4.4. So we made those versions our minimum software
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versions, and anything older than that we didn't try to program for, and
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we didn't offer support for.
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Two and a half years later, we've looked at the current versions of
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software, and what minimum versions we should support. We looked at our
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supported operating systems, and their support, and decided to base our
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minimum versions off theirs. In particular, we had a look at Ubuntu
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Linux, which has two types of releases: short term support releases, and
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long term support releases (better known as LTS). With this in mind, we
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looked at the minimum versions of Python and Qt in Ubuntu's 10.04
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release (the most recent LTS).
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We aren't concerned with Windows or Mac OS X, since we have to build and
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compile OpenLP completely for those platforms, whereas the Linux and
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\*BSD support OpenLP natively. Since Fedora, FreeBSD, and the other
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Linux and \*BSD distributions are all up-to-date, and none of them offer
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the same LTS-style releases that Ubuntu does, we decided to use Ubuntu
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as our yardstick.
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So, as of today, the minimum software requirements are Python 2.6, Qt
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4.6 and PyQt 4.7, and the minimum version of Ubuntu is 10.04. The
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minimums for Windows is XP and OS X is 10.5. Fedora's minimum version is
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typically the release in development, and then all releases back to the
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current release. Arch Linux is a "rolling release" distro, and so OpenLP
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generally works on it. OpenLP generally works on all versions of FreeBSD
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as well, since it's a source-based system, and you can generally find
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the latest OpenLP package for PC-BSD as well.
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