Question 413696 in Ubuntu Question posted in
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Ubuntu – tesseract-ocr no longer installable due to missing libleptonica6 dependency

I’m trying to update Tesseract OCR (tesseract-ocr) from one of these PPA archives: ppa:alex-p/tesseract-ocr-devel or ppa:alex-p/tesseract-ocr-daily on Ubuntu 22.04. However, the installation fails due to libleptonica6 no longer being installable:

 #32 8.592 The following packages have unmet dependencies:
 #32 8.648  libtesseract5 : Depends: libleptonica6 (>= 1.75.3) but it is not installable
 #32 8.649  tesseract-ocr : Depends: libleptonica6 (>= 1.75.3) but it is not installable

This started to happen on Oct 30 and subsequent days, while on Oct 29 and earlier it used to install correctly.

To reproduce:

$ docker run --rm -it --name test -u 0 ubuntu:22.04 bash -c "apt update && apt install -y software-properties-common && add-apt-repository -y ppa:alex-p/tesseract-ocr-devel && apt update && apt install -y tesseract-ocr"
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2

Answers


  1. Chosen as BEST ANSWER
    0

    A workaround is to switch to one of stable PPAs, e.g. ppa:alex-p/tesseract-ocr5:

    $ docker run --rm -it --name test -u 0 ubuntu:22.04 bash -c "apt update && apt install -y software-properties-common && add-apt-repository -y ppa:alex-p/tesseract-ocr5 && apt update && apt install -y tesseract-ocr && tesseract --version"
[..]
Setting up liblept5:amd64 (1.82.0-3build1) ...
Setting up libtesseract5:amd64 (5.4.1-1ppa1~jammy1) ...
[..]
tesseract 5.4.1
 leptonica-1.82.0

  2. 0

    The issue has been solved in https://github.com/tesseract-ocr/tesseract/issues/4343.

    tesseract-ocr is installable once again from the tesseract-ocr-devel and tesseract-ocr-daily PPAs.

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