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Groups > linux.debian.user > #206125

What means "<<" in dependencies at packages.debian.org?

From Kent West <westk@acu.edu>
Newsgroups linux.debian.user
Subject What means "<<" in dependencies at packages.debian.org?
Date 2019-03-10 20:20 +0100
Message-ID <xAc9k-6py-17@gated-at.bofh.it> (permalink)
Organization linux.* mail to news gateway

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Example: https://packages.debian.org/sid/python3-kivy

-
>
> dep: python3 <https://packages.debian.org/sid/python3> (<< 3.7) dep:
> python3 <https://packages.debian.org/sid/python3> (>= 3.5~)


The ">=" surely means "greater than or equal to", but what is "<<"? "less
than or less than"?

Even more interesting is that "aptitude install python3-kivy" only shows
one "<" (which makes sense to me as "less than"):

The following packages have unmet dependencies:
>  python3-kivy : Depends: python3 (< 3.7) but 3.7.2-1 is installed
>

and in the description of the package in the aptitude console:

Depends: python3-gst-1.0, python3 (< 3.7), python3 (>= 3.5~), ...
>

It's not a typo, unless other pages have similar typos (sometimes being
">>" - "greater than or greater than"?).

Also, is the answer documented somewhere? I've researched unproductively
for several hours.

Thanks!

-- 
Kent West                    <")))><
Westing Peacefully - http://kentwest.blogspot.com

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Thread

What means "<<" in dependencies at packages.debian.org? Kent West <westk@acu.edu> - 2019-03-10 20:20 +0100
  Re: What means "<<" in dependencies at packages.debian.org? Kent West <westk@acu.edu> - 2019-03-10 20:40 +0100
  Re: What means "<<" in dependencies at packages.debian.org? Andreas Ronnquist <mailinglists@gusnan.se> - 2019-03-10 20:40 +0100
  Re: What means "<<" in dependencies at packages.debian.org? Tomaž Šolc <tomaz.solc@tablix.org> - 2019-03-10 21:20 +0100

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