Jim Jackson  wrote:
>
>
> In a Debian system, the source for every package is available as a sopurce
> package. You need the right lines in your /etc/apt/sources.list file.
> This includes the source for the kernel.
>
> As Raspbian is essentially Debian, I'd expect it to be the same. Indeed
> on my (very) old out-of-date Raspbian system I can download source files -
> I simply added a "deb-src" line that the same as my "deb" line, and did
>
>   apt-get source some-package-name
>
> in some directory where I want the source files to be stored.
>
> This is documented on the debian wiki at
>
>  https://wiki.debian.org/Packaging/SourcePackage
>

Ok, this is a good start. I find
bob@raspberrypi:~ $ more /etc/apt/sources.list
deb http://raspbian.raspberrypi.org/raspbian/ buster main contrib non-free rpi
# Uncomment line below then 'apt-get update' to enable 'apt-get source'
#deb-src http://raspbian.raspberrypi.org/raspbian/ buster main contrib non-free
rpi

but AIUI apt-get triggers a complete download/overwrite of whatever
got downloaded before. That's likely to be wasteful, slow and hard on flash.
Is there an option switch like CVS or subversion that fetches changes only?

Thank you very much!

bob prohaska

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