Hi everyone :)
After installing the emacs package and trying to remove it afterwards:
sudo apt remove --purge --autoremove emacs
It only removed that package and not the other dependencies installed with it (emacs-gtk, emacs-common…). I had to manually remove them one-by-one.
Isn’t that command supposed:
- remove package
- it’s configuration files
- remove unused packages automatically installed ?
What am I missing here?
Also after reading the Stupid things you’ve done that broke your Linux installation post, I read a lot of people messing up their debian system after using the above command… So I assume that’s not the correct way of doing things in Linux?
Some insight from experienced user would be great :)
Ah, I can duplicate this behavior too. I think it is probably related to emacs being a metapackage. It does not include emacs itself but forces the install of emacs-gtk. In my mind removing the metapackage should allow you to autoremove dependencies, but people have broken their systems badly with this behavior so it may have been changed or it’s stuck behind some configuration option.
Removing emacs-gtk itself will work as you expect. You can also install emacs-nox for a cli-only one that is smaller.
Edit: there is a setting called APT::Never-MarkAuto-Sections that by default includes meta packages and I think is the cause of this.
Thank you very much for your enlighten answer :D !
Yes that’s what I found out with
apt show emacs-gtk
, it shows all the dependencies but I found it quiet odd behavior (lack of knowledge).I wasn’t aware of metapackages, something new to put into my knowledge database.
Edit: While writing my replay and searching through the web and my console, even though I wouldn’t have had understood it while reading it… It actually tells me in the description that emacs is a metapackage… Bad reading skills :/ sorry about that !
If you don’t mind I have a last question. Imagine I want to remove
docker-ce
, which depends oniptables
among others, if Isudo apt remove --purge --autoremove docker-ce
, this isn’t going to remove iptables and break my system right? Because it’s used by other packages, system… I guess, no?I think a more general question would be how can I be sure I not going to fuck my system while removing packages? Maybe I’m to paranoïd and today it’s relatively safe to do so, compared to years ago??
Thank you :)
If something else depends on it then it shouldn’t be removed, it’s only removing things that are not used elsewhere.
Usually just reading through the packages it’s listing and double check what it’s doing is enough. If something is removing a ton of gnome and you’re not trying to remove gnome, that would be an issue. If something is trying to remove the kernel (unless it’s an old kernel) or grub that’s also worth digging into. I’ve never run into problems with it, I don’t think it’s common these days.