After doing some tests inside and outside a chroot I've found the
following.
1. If a package is not currently installed then "--install-suggests"
will work:
$ sudo apt-get --install-suggests install git
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following extra packages will be installed:
cvs cvsps emacs emacs23 emacs23-bin-common emacs23-common emacs23-el
emacsen-common fgetty git-arch git-cvs git-daemon-run
git-doc git-el git-email git-gui git-man git-svn gitk gitweb
libauthen-sasl-perl libcxxtools-dev libcxxtools7
libdbd-sqlite3-perl libdbi-perl libgssapi-perl libm17n-0 libnet-daemon-perl
libnet-smtp-ssl-perl libotf0 libplrpc-perl
libsvn-perl libterm-readkey-perl libtntnet-dev libtntnet9 m17n-contrib
m17n-db m17n-docs mksh rcs runit ssh tcl tk tk8.5 tla
tla-doc tntnet tntnet-demos tntnet-doc tntnet-runtime
Suggested packages:
httpd-cgi libcgi-fast-perl socklog-run
The following NEW packages will be installed
cvs cvsps emacs emacs23 emacs23-bin-common emacs23-common emacs23-el
emacsen-common fgetty git git-arch git-cvs git-daemon-run
git-doc git-el git-email git-gui git-man git-svn gitk gitweb
libauthen-sasl-perl libcxxtools-dev libcxxtools7
libdbd-sqlite3-perl libdbi-perl libgssapi-perl libm17n-0 libnet-daemon-perl
libnet-smtp-ssl-perl libotf0 libplrpc-perl
libsvn-perl libterm-readkey-perl libtntnet-dev libtntnet9 m17n-contrib
m17n-db m17n-docs mksh rcs runit ssh tcl tk tk8.5 tla
tla-doc tntnet tntnet-demos tntnet-doc tntnet-runtime
0 upgraded, 52 newly installed, 0 to remove and 5 not upgraded.
Need to get 56.4 MB/63.1 MB of archives.
After this operation, 165 MB of additional disk space will be used.
Do you want to continue [Y/n]?
2. If a package is already installed then installing (upgrading to) a newer
version over the top will not honour the "--install-suggests" option:
$ sudo add-apt-repository ppa:git-core/ppa
$ sudo apt-get update
$ apt-cache policy git
git:
Installed: 1:1.7.9.5-1
Candidate: 1:1.7.11.1-0ppa1~precise3
Version table:
1:1.7.11.1-0ppa1~precise3 0
500 http://ppa.launchpad.net/git-core/ppa/ubuntu/ precise/main amd64
Packages
*** 1:1.7.9.5-1 0
500 http://gb.archive.ubuntu.com/ubuntu/ precise/main amd64 Packages
100 /var/lib/dpkg/status
$ sudo apt-get --install-suggests install git
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following extra packages will be installed:
git-man
Suggested packages:
git-daemon-run git-daemon-sysvinit git-doc git-el git-arch git-cvs git-svn
git-email git-gui gitk gitweb
The following packages will be upgraded:
git git-man
2 upgraded, 0 newly installed, 0 to remove and 5 not upgraded.
Need to get 0 B/8,030 kB of archives.
After this operation, 197 kB of additional disk space will be used.
Do you want to continue [Y/n]?
3. Doing a reinstall will not honour the "--install-suggests" option:
$ sudo apt-get --install-suggests --reinstall install git
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 5 not upgraded.
Need to get 0 B/6,087 kB of archives.
After this operation, 0 B of additional disk space will be used.
(Reading database ... 444159 files and directories currently installed.)
Preparing to replace git 1:1.7.9.5-1 (using .../git_1%3a1.7.9.5-1_amd64.deb) ...
Unpacking replacement git ...
Setting up git (1:1.7.9.5-1) ...
The behaviour when the package is already installed is unexpected - one
would expect the flag to be honoured when using the "install" command.
** Changed in: apt (Ubuntu)
Status: Invalid => Confirmed
** Changed in: apt (Ubuntu)
Importance: Undecided => Low
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Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/862776
Title:
apt-get --install-suggests install is a NOOP
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