Installing rsync by default

[LecrisUT]

What's the problem this feature will solve?

On manual build.commands we only have cp we can use, but for the most part, rsync is more robust and for those familiar can be safer w.r.t. creating the correct path structure. It can even eliminate mkdir -p commands

Describe the solution you'd like

Install rsync by default on the supported os images

Alternative solutions

I have tried to install rsync manually, but as you can see here, that doesn't help 🤔

[stsewd]

Hi, we won't be installing packages by default anymore, since projects have different requirements.

I have tried to install rsync manually, but as you can see here, that doesn't help 🤔

See #9599.

You may be able to install rsync by downloading the binary https://rsync.samba.org/download.html.

[ssbarnea]

This should be reopened, especially as @stsewd suggestion would not work. I tried it myself.

Any attempt to download and install the binary will fail because it will not have access to required system libraries, rsync is not really a portable executable.

rsync: error while loading shared libraries: libpopt.so.0: cannot open shared object file: No such file or directory

I had to do really ugly commands to attemp to install it and still failed:

    - curl -o /tmp/rsync.tar.gz https://download.samba.org/pub/rsync/binaries/ubuntu-22.04-x86_64/rsync-3.2.7.tar.gz
    - tar -vxzf /tmp/rsync.tar.gz -C /tmp
    # Copy executable in the first directory in path, which happens to be writable on RTD
    - mkdir -p ${PATH%%:*}
    - cp /tmp/usr/local/bin/rsync ${PATH%%:*}/
    - type rsync

Reading RsyncProject/rsync#72 would also uncover some interesting bits.

[stsewd]

@ssbarnea please subscribe to #9599. As we won't pre-install rsync by default.