The following packages have been kept back:

It means that the new rails package has different dependencies that the older one which is installed, and that at least one of the dependencies of the new rails package is not installed. Just run "apt-get install rails" and you'll see that in addition to the new rails package, there are other packages which need to be installed.

OK, I tried running apt-get install rails and got the following message:

The following packages have unmet dependencies:

rails: Depends: rake (> 0.7.0) but 0.5.3-1 is to be installed

E: Broken packages

OK, so I tried to install rake.

ed@linode:~$ sudo apt-get --simulate install rake
Reading Package Lists... Done
Building Dependency Tree... Done
rake is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 1 not upgraded.

Here is what I get with showpkg. I'm not sure which rake is installed, or how to specify the correct one.

ed@linode:~$ apt-cache showpkg rake

Package: rake

Versions:

0.7.1-1(/var/lib/apt/lists/ftp.us.debian.orgdebiandiststestingmainbinary-i386Packages)

0.5.3-1(/var/lib/apt/lists/ftp.us.debian.orgdebiandistsstablemainbinary-i386Packages)(/var/lib/dpkg/status)

Reverse Depends:

rails,rake

rails,rake 0.7.0

Dependencies:

0.7.1-1 - ruby (4 1.8)

0.5.3-1 - ruby (4 1.8)

Provides:

0.7.1-1 -

0.5.3-1 -

Reverse Provides:

> …how to specify the correct one.

This will probably do the job for you:

sudo apt-get install rake/testing rails

Regards,

Cliff