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Question on installing packages via the Python APT library

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  Question on installing packages via the Python APT library Hunter Wittenborn <hunter@hunterwittenborn.com> - 2021-11-08 00:30 +0100
    Re: Question on installing packages via the Python APT library Sandro Tosi <morph@debian.org> - 2021-11-08 02:20 +0100
      Re: Question on installing packages via the Python APT library Hunter Wittenborn <hunter@hunterwittenborn.com> - 2021-11-09 00:20 +0100

#13684 — Question on installing packages via the Python APT library

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Hi! I'm currently working on a project that's going to be using the Python APT library to handle some package installation, but I've got a question on how exactly a certain thing is working:



I've gotten everything up to the actual installation of packages done (up to the point of calling 'DepCache.commit()', but once I get to the 'commit()' stage I can't figure out how to control the output of the 'commit()' call in a way I'm wanting.



Going with the two classes that are specified for the 'commit()' function, I currently have the following implemented (I haven't exactly figured out what to put in each one yet, as I'm still trying to figure out all how this step works):



acquire_progress: https://gist.github.com/hwittenborn/56fa689b86396a904155e4b1b5be817a

install_progress: https://gist.github.com/hwittenborn/0eb762abdfeb96e2c1cbf4f5b6a975f3



The 'tap.message' library being used inside both of those classes is just a message system for my program, they don't do anything particularly important that would affect anything at all.



The acquire_progress stage *appears* to be working fine, though the packages I downloaded were quite small so I didn't really get a chance to see if it just did some weird stuff like with install progress;



The problem with install_progress is that it's exiting my program, and then proceeding with installing packages, as if it starts installing packages in the background. How exactly should I go about waiting for it to finish though?



On a side note, I'm seeing this text whenever it (presumably) gets to the install part:



"""



custom fork found

got pid: 31873

got pid: 0

got fd: 4

"""



Is there any way I can hide that? I'm thinking it's from the 'fork()' call in the install_progress class, but the Python APT documentation is recommending not changing that [1], so I wasn't really sure.



[1]: https://apt-team.pages.debian.net/python-apt/library/apt.progress.base.html#apt.progress.base.InstallProgress.fork



Thanks, anything helps!



---

Hunter Wittenborn

mailto:hunter@hunterwittenborn.com

https://github.com/hwittenborn

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#13685

python-apt is not written nor maintained by this team, but rather
(from https://tracker.debian.org/pkg/python-apt) by the APT Dev team
and in particular by Julian Andres Klode (both in CC): please continue
the discussion with them

On Sun, Nov 7, 2021 at 6:21 PM Hunter Wittenborn
<hunter@hunterwittenborn.com> wrote:
>
> Hi! I'm currently working on a project that's going to be using the Python APT library to handle some package installation, but I've got a question on how exactly a certain thing is working:
>
> I've gotten everything up to the actual installation of packages done (up to the point of calling 'DepCache.commit()', but once I get to the 'commit()' stage I can't figure out how to control the output of the 'commit()' call in a way I'm wanting.
>
> Going with the two classes that are specified for the 'commit()' function, I currently have the following implemented (I haven't exactly figured out what to put in each one yet, as I'm still trying to figure out all how this step works):
>
> acquire_progress: https://gist.github.com/hwittenborn/56fa689b86396a904155e4b1b5be817a
> install_progress: https://gist.github.com/hwittenborn/0eb762abdfeb96e2c1cbf4f5b6a975f3
>
> The 'tap.message' library being used inside both of those classes is just a message system for my program, they don't do anything particularly important that would affect anything at all.
>
> The acquire_progress stage *appears* to be working fine, though the packages I downloaded were quite small so I didn't really get a chance to see if it just did some weird stuff like with install progress;
>
> The problem with install_progress is that it's exiting my program, and then proceeding with installing packages, as if it starts installing packages in the background. How exactly should I go about waiting for it to finish though?
>
> On a side note, I'm seeing this text whenever it (presumably) gets to the install part:
>
> """
> custom fork found
> got pid: 31873
> got pid: 0
> got fd: 4
> """
>
> Is there any way I can hide that? I'm thinking it's from the 'fork()' call in the install_progress class, but the Python APT documentation is recommending not changing that [1], so I wasn't really sure.
>
> [1]: https://apt-team.pages.debian.net/python-apt/library/apt.progress.base.html#apt.progress.base.InstallProgress.fork
>
> Thanks, anything helps!
>
> ---
> Hunter Wittenborn
> hunter@hunterwittenborn.com
> https://github.com/hwittenborn
>
>
>
>


-- 
Sandro "morph" Tosi
My website: http://sandrotosi.me/
Me at Debian: http://wiki.debian.org/SandroTosi
Twitter: https://twitter.com/sandrotosi

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#13687

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That's my bad, I couldn't ever find a mailing list for APT (presumably because of that weird name), so this one seemed like the only option.Should we continue the conversation here, or should I send a new message over there?---Hunter Wittenbornhunter@hunterwittenborn.comhttps://github.com/hwittenborn

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