Re: Upgrade from jessie to strech wants to bloat by system
On 2017-09-07 17:07 +0200, Urs Thuermann wrote:
> After fully updating my jessie system using
>
> aptitude update; aptitude full-upgrade
>
> I edited sources.list to dist-upgrade to strech. A folloing aptitude
> upgrade wants to install additional 1.5 GB on my system which is
> currently ~5 GB, i.e. a 30% increase:
>
> # df -h / /usr
> Filesystem Size Used Avail Use% Mounted on
> /dev/dm-0 2.0G 1.8G 135M 93% /
> /dev/dm-2 7.8G 4.4G 3.0G 60% /usr
> # du -hs /root
> 1.4G /root
> # aptitude upgrade
> Resolving dependencies...
> ...
> The following NEW packages will be installed:
> btrfs-progs{a} clang-3.8{a} cpp-6{a} cpp-6-doc{a} dh-autoreconf{a}
> ...
> The following packages will be REMOVED:
> cpp-4.9-doc{u} docutils-common{u} docutils-doc{u} g++-4.9{u} gir1.2-vte-2.90{u}
> ...
> The following packages will be upgraded:
> acct acl acpi acpi-support-base acpid adduser adwaita-icon-theme apache2
> ...
> 1151 packages upgraded, 297 newly installed, 128 to remove and 82 not upgraded.
> Need to get 1843 MB of archives. After unpacking 1537 MB will be used.
> Do you want to continue? [Y/n/?]
>
> I see that some new versions of packages are installed without the old
> versions being removed, although they are marked as automatically
> installed, e.g. Linux kernel, clang, llvm, and some others. For
> example
>
> # aptitude search "~i clang"
> i clang - C, C++ and Objective-C compiler (LLVM based)
> i A clang-3.5 - C, C++ and Objective-C compiler (LLVM based)
> i A libclang-common-3.5-dev - clang library - Common development package
> i A libclang1-3.5 - C interface to the clang library
>
> and aptitude full-upgrade will install clang-3.8 but not remove
> clang-3.5.
This happens because clang-3.5 and gcc-4.9 provide the c-compiler
virtual package which is a dependency/recommendation of quite a few
packages (usually via an alternative: gcc | c-compiler). Apt does not
autoremove such packages since they are not unused. This was once
convincingly explained to me by aptitude's creator[1].
> But my suspicion is that even when I manually remove all
> these old packages, the installation is still unreasonably larger than
> it is currently.
Quite possibly. The -Z and -D flags can help you to identify the
biggest offenders and why they are pulled in.
Cheers,
Sven
1. https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=477166#16
Reply to: