问题
I've been attempting to install the package r-base on Ubuntu Trusty Tahr and there's a package dependency that became broken in the last week.
My commands are as follows:
apt-get update -y
apt-get dist-upgrade -y
apt-get install -y r-base-dev
...
Err http://archive.ubuntu.com/ubuntu/ trusty-security/main libpng12-dev amd64 1.2.50-1ubuntu2.14.04.1
404 Not Found [IP: 91.189.91.23 80]
Fetched 92.8 MB in 28s (3262 kB/s)
E: Failed to fetch http://archive.ubuntu.com/ubuntu/pool/main/libp/libpng/libpng12-dev_1.2.50-1ubuntu2.14.04.1_amd64.deb 404 Not Found [IP: 91.189.91.23 80]
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?
The command '/bin/sh -c sudo apt-get install -y r-base-dev' returned a non-zero code: 100
I have attempted to pass --fix-missing and --ignore-missing but it still fails.
It appears that the package was removed on Jan 8, 2016 due to a security patch: https://launchpad.net/ubuntu/+archive/primary/+sourcepub/5711916/+listing-archive-extra
Looking at http://archive.ubuntu.com/ubuntu/pool/main/libp/libpng/ confirms that the ubuntu2.14.04.1 file is not there but 1.2.50-1ubuntu2.14.04.2 is present.
How do I fix that?
My goal is to get r-base to install.
If I could somehow make it use the version "2" file instead of "1" it would presumably find the file and proceed happily, but I'm not sure how to make apt-get do that.
Alternatively, maybe it's possible to update the dependency list on my side? Or is it up to the r-base maintainers to do so?
Or third, is it possible to add a repository that still has the old package? I'm not running on an AMD processor, so I shouldn't need this particular package at runtime anyway.
Update:
The solution that worked for me was to explicitly remove the package with the broken dependency, download the updated version, and re-install it before running apt-get update.
$ apt-get remove -y libpng12-0
$ curl -O http://archive.ubuntu.com/ubuntu/pool/main/libp/libpng/libpng12-0_1.2.50-1ubuntu2.14.04.2_amd64.deb
$ dpkg -i libpng12-0_1.2.50-1ubuntu2.14.04.2_amd64.deb
$ apt-get update -y
The problem apparently doesn't have much to do with the r-base or r-base-dev packages, even though r-base-dev incidentally depends on libpng12.
回答1:
In my opinion this problem will probably fix itself in a couple of days. However if you can't wait, here's what you can do.
First, find out which version of libpng the package you want to install depends on.
$ apt-cache depends r-base
r-base
Depends: r-base-core
Depends: r-recommended
Recommends: r-base-html
Recommends: r-doc-html
Suggests: ess
|Suggests: r-doc-info
Suggests: r-doc-pdf
r-base itself does not depend on libpng but r-base-core probably does.
$ apt-cache depends r-base-core | grep png
Depends: libpng12-0
Now we want to know which specific version of libpng
$ apt-cache show r-base-core
... libpng12-0 (>= 1.2.13-4) ...
If you locate this package in Ubuntu's repositories, you can download it and try to install it manually.
$ wget <url>
$ sudo dpkg -i <filename>
and then install r-base with apt-get install r-base. However if dpkg
refuses to install libpng you should not force it, because it means the
package is not installable and it would break other dependencies.
来源：https://stackoverflow.com/questions/34778262/apt-get-install-fails-with-not-found-error-because-package-removed-from-reposito