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I'm using a Debian-based OS distribution (Devuan, to be specific). I'm trying to use the apt-add-repository Python-based program, which is part of the software-properties-common package.

Unfortunately, running it - fails, and I get:

Traceback (most recent call last):
  File "/usr/bin/apt-add-repository", line 361, in <module>
    addaptrepo = AddAptRepository()
  File "/usr/bin/apt-add-repository", line 39, in __init__
    self.distro.get_sources(self.sourceslist)
    ~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/aptsources/distro.py", line 92, in get_sources
    raise NoDistroTemplateException(
    ...<2 lines>...
    )
aptsources.distro.NoDistroTemplateException: Error: could not find a distribution template for devuan/excalibur ceres

I've gone over the script itself - the "templates" are not there; I've also looked through a couple of potential files it imports, also no luck, or perhaps I've missed something.

My questions:

  • Where are those "distribution templates" actually located?
  • How can I add a template to suit my distribution?
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  • Did you download this from Github? If so do you have a link? Commented Feb 6 at 21:45
  • @eyoung100: It's part of a Debian package, see link. Commented Feb 6 at 21:59
  • I peeked at the File listing for python-apt-common and found the location of the templates folder. Does ls /usr/share/python-apt/templates have output? Commented Feb 6 at 22:20
  • @eyoung100: Yes it does... and there's even a pair of files for Devuan there. I wonder why they don't match. Commented Feb 6 at 22:32
  • Try sudo nano -w /usr/share/python-apt/templates/nameoffile. You may need to edit them in order to match for the missing version. Commented Feb 6 at 22:43

1 Answer 1

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This is a bug in python-apt-common-devuan — it doesn’t describe excalibur. Templates are located in /usr/share/python-apt/templates, and derivatives are supposed to provide their own (which Devuan does).

You should be able to fix this by editing /usr/share/python-apt/templates/Devuan.info to add an excalibur entry:

Suite: excalibur
RepositoryType: deb
BaseURI: http://deb.devuan.org/merged/
MatchURI: [a-z]{2}\.deb\.devuan\.org
MirrorsFile: Devuan.mirrors
_Description: Devuan 6 'Excalibur'
Component: main
_CompDescription: Officially supported
Component: contrib
_CompDescription: DFSG-compatible Software with Non-Free Dependencies
Component: non-free
_CompDescription: Non-DFSG-compatible Software
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  • Actually, I think it might be a pair of bugs, since the "codename" the Python script derives for my distribution is "excalibur ceres" rather than just "excalibur". But together with this, I could perhaps arrange for some workaround. Commented Feb 7 at 8:13
  • Oh, and another thing is that the script determines the distribution template's distro name is "Devuan", but the system's distro name is determined to be "devuan", lowercase. Commented Feb 7 at 8:35
  • If you’re referring to the file name, that doesn’t matter, the matcher loads all .info files. Commented Feb 7 at 10:48
  • Thanks for fleshing out my comment :) Commented Feb 7 at 23:38
  • @StephenKitt: No, I'm referring to the strings being compared within the Python script. But your answer already helps. Commented Feb 8 at 7:51

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