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How is it possible to install one package from the sid?

I have installed buster but want to install one package which is not yet available in the buster repository

https://packages.debian.org/search?keywords=tesseract-ocr

I want to install tesseract 4.1.

Before I install 4.1 i want to check if any other packages needs any updates which is not yet available in buster. How to check for that?

I only want to update tesseract

1 Answer 1

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  1. First read Dont Break Debian.

  2. Second, ask yourself "Do I really need the shiny new version, or do I just want it?", and "Do I know what actual benefit I'll get from the new version, or is it just a case of 'newer is better'?.

    If you don't actually need it, don't upgrade. If you can't name any actual benefits that are worth hassle of making a FrankenDebian, then don't upgrade.

  3. Your best option is to wait until tesseract 4.1 arrives in buster backports. The downside to this option is that there is no guarantee that this will ever happen.

  4. Your second best option is to download the debianised source packages for tesseract and build them yourself in your buster system. i.e. backport it yourself.

  5. If you don't want to build it yourself but you're still impatient, you could add sources.list entries for sid to your system, and configure apt so that it uses buster (or better yet, stable) by default. e.g. by adding the following to /etc/apt/apt.conf (or to a file in /etc/apt/apt.conf.d/)

    APT::Default-Release "stable";
    

    And then over-ride the default to install tesseract-ocr with:

    apt-get -d -u -t sid install tesseract-ocr
    

    You may (and probably will) have to list other tesseract-related packages on the same command line. This will be an iterative process of running it again and again, adding more package name(s) to the command line each time until it offers to actually install the packages without complaint.

    Remove the -d (aka --download-only) option when you are sure you want to install the packages.

    Note that there is no guarantee that this will upgrade only tesseract. It will upgrade tesseract and every dependency of tesseract that requires a newer version than your buster system has, and every versioned dependency of all of those packages.

    If one of those versioned dependencies happens to be libc6 or some other very commonly used package, that will trigger a cascade of further upgrades. At which point, you'd best either cancel the upgrade or just upgrade everything to sid.

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    too much effort
    – Rainb
    Dec 9, 2020 at 17:20

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