Hello, xenial has version 3.2.1-4 and artful had 3.2.1-6. Sadly, artful is EOL now, so no support is available for it anymore. I would suggest you to upgrade to bionic or focal, the latest LTS available.
alternatively you can download manually the deb from there https://launchpad.net/ubuntu/+source/libffi/3.2.1-6/+build/10963483 and dpkg -i it. But moving to 20.04 or newer is really the best option I suggest. ** Changed in: libffi (Ubuntu) Status: Incomplete => Invalid -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to libffi in Ubuntu. https://bugs.launchpad.net/bugs/1917620 Title: failed to install libffi-dev package Status in libffi package in Ubuntu: Invalid Bug description: Hi there, I'm trying to install libffi-dev and receiving this error [1]: libffi-dev : Depends: libffi6 (= 3.2.1-4) but 3.2.1-6 is to be installed However, my system already had the libff6=3.2.1-6 [2,3]. I also tried updating and installing this package, however did not work [4]. I would appreciate your feedback on this. Thanks a lot, Info about my system: $ uname -a Linux pooja-XPS-13-9360 4.13.0-46-generic #51-Ubuntu SMP Tue Jun 12 12:36:29 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux [1] ************************************* $ sudo apt-get install libffi-dev Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: libffi-dev : Depends: libffi6 (= 3.2.1-4) but 3.2.1-6 is to be installed E: Unable to correct problems, you have held broken packages. [2] ************************************* $ sudo apt-get install libffi6 Reading package lists... Done Building dependency tree Reading state information... Done libffi6 is already the newest version (3.2.1-6). 0 upgraded, 0 newly installed, 0 to remove and 10 not upgraded. [3] ************************************* $ apt-cache policy libffi-dev libffi-dev: Installed: (none) Candidate: 3.2.1-4 Version table: 3.2.1-4 500 500 http://archive.ubuntu.com/ubuntu xenial/main amd64 Packages [4] ******************************************** $ sudo apt-get update && sudo apt-get install libffi-dev Hit:1 https://repo.skype.com/deb unstable InRelease Hit:2 http://ppa.launchpad.net/brightbox/ruby-ng/ubuntu artful InRelease Hit:3 https://packages.sury.org/php stretch InRelease Ign:4 http://ppa.launchpad.net/deadsnakes/ppa/ubuntu artful InRelease Hit:5 http://ppa.launchpad.net/ondrej/php/ubuntu artful InRelease Hit:6 http://ppa.launchpad.net/ubuntu-toolchain-r/test/ubuntu artful InRelease Ign:7 http://ppa.launchpad.net/webupd8team/unstable/ubuntu artful InRelease Err:8 http://ppa.launchpad.net/deadsnakes/ppa/ubuntu artful Release 404 Not Found [IP: 91.189.95.85 80] Err:9 http://ppa.launchpad.net/webupd8team/unstable/ubuntu artful Release 404 Not Found [IP: 91.189.95.85 80] Hit:10 http://dl.google.com/linux/chrome/deb stable InRelease Ign:11 http://archive.ubuntu.com/ubuntu xenial InRelease Ign:12 http://archive.ubuntu.com/ubuntu xenial-updates InRelease Ign:13 http://archive.ubuntu.com/ubuntu xenial-backports InRelease Ign:14 http://archive.ubuntu.com/ubuntu artful InRelease Ign:15 http://archive.ubuntu.com/ubuntu vivid InRelease Err:16 http://archive.ubuntu.com/ubuntu xenial Release Cannot initiate the connection to archive.ubuntu.com:80 (2001:67c:1360:8001::23). - connect (101: Network is unreachable) [IP: 2001:67c:1360:8001::23 80] Err:17 http://archive.ubuntu.com/ubuntu xenial-updates Release Cannot initiate the connection to archive.ubuntu.com:80 (2001:67c:1360:8001::23). - connect (101: Network is unreachable) [IP: 2001:67c:1360:8001::23 80] Ign:18 https://deb.etcher.io stable InRelease Ign:19 https://dl.yarnpkg.com/debian stable InRelease Err:20 http://archive.ubuntu.com/ubuntu xenial-backports Release Cannot initiate the connection to archive.ubuntu.com:80 (2001:67c:1360:8001::23). - connect (101: Network is unreachable) [IP: 2001:67c:1360:8001::23 80] Err:21 http://archive.ubuntu.com/ubuntu artful Release Cannot initiate the connection to archive.ubuntu.com:80 (2001:67c:1360:8001::23). - connect (101: Network is unreachable) [IP: 2001:67c:1360:8001::23 80] Err:22 http://archive.ubuntu.com/ubuntu vivid Release Cannot initiate the connection to archive.ubuntu.com:80 (2001:67c:1360:8001::23). - connect (101: Network is unreachable) [IP: 2001:67c:1360:8001::23 80] Err:23 https://deb.etcher.io stable Release Cannot initiate the connection to deb.etcher.io:443 (2606:4700:3030::6815:5d19). - connect (101: Network is unreachable) [IP: 2606:4700:3030::6815:5d19 443] Err:24 https://dl.yarnpkg.com/debian stable Release Cannot initiate the connection to dl.yarnpkg.com:443 (2606:4700::6810:ab63). - connect (101: Network is unreachable) [IP: 2606:4700::6810:ab63 443] Hit:25 http://archive.canonical.com/ubuntu xenial InRelease Hit:26 http://security.ubuntu.com/ubuntu xenial-security InRelease Ign:27 https://dl.bintray.com/sbt/debian InRelease Get:28 https://dl.bintray.com/sbt/debian Release [815 B] Hit:29 https://packagecloud.io/slacktechnologies/slack/debian jessie InRelease Reading package lists... Done E: The repository 'http://ppa.launchpad.net/deadsnakes/ppa/ubuntu artful Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://ppa.launchpad.net/webupd8team/unstable/ubuntu artful Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. W: Target Packages (main/binary-amd64/Packages) is configured multiple times in /etc/apt/sources.list.d/google-chrome.list:3 and /etc/apt/sources.list.d/google-chrome.list:4 W: Target Packages (main/binary-all/Packages) is configured multiple times in /etc/apt/sources.list.d/google-chrome.list:3 and /etc/apt/sources.list.d/google-chrome.list:4 W: Target Translations (main/i18n/Translation-en_US) is configured multiple times in /etc/apt/sources.list.d/google-chrome.list:3 and /etc/apt/sources.list.d/google-chrome.list:4 W: Target Translations (main/i18n/Translation-en) is configured multiple times in /etc/apt/sources.list.d/google-chrome.list:3 and /etc/apt/sources.list.d/google-chrome.list:4 W: Target DEP-11 (main/dep11/Components-amd64.yml) is configured multiple times in /etc/apt/sources.list.d/google-chrome.list:3 and /etc/apt/sources.list.d/google-chrome.list:4 W: Target DEP-11 (main/dep11/Components-all.yml) is configured multiple times in /etc/apt/sources.list.d/google-chrome.list:3 and /etc/apt/sources.list.d/google-chrome.list:4 W: Target DEP-11-icons (main/dep11/icons-64x64.tar) is configured multiple times in /etc/apt/sources.list.d/google-chrome.list:3 and /etc/apt/sources.list.d/google-chrome.list:4 N: Skipping acquire of configured file 'main/binary-i386/Packages' as repository 'http://dl.google.com/linux/chrome/deb stable InRelease' doesn't support architecture 'i386' E: The repository 'http://archive.ubuntu.com/ubuntu xenial Release' no longer has a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://archive.ubuntu.com/ubuntu xenial-updates Release' no longer has a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://archive.ubuntu.com/ubuntu xenial-backports Release' no longer has a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://archive.ubuntu.com/ubuntu artful Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://archive.ubuntu.com/ubuntu vivid Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'https://deb.etcher.io stable Release' no longer has a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'https://dl.yarnpkg.com/debian stable Release' no longer has a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. W: Target Packages (main/binary-amd64/Packages) is configured multiple times in /etc/apt/sources.list.d/google-chrome.list:3 and /etc/apt/sources.list.d/google-chrome.list:4 W: Target Packages (main/binary-all/Packages) is configured multiple times in /etc/apt/sources.list.d/google-chrome.list:3 and /etc/apt/sources.list.d/google-chrome.list:4 W: Target Translations (main/i18n/Translation-en_US) is configured multiple times in /etc/apt/sources.list.d/google-chrome.list:3 and /etc/apt/sources.list.d/google-chrome.list:4 W: Target Translations (main/i18n/Translation-en) is configured multiple times in /etc/apt/sources.list.d/google-chrome.list:3 and /etc/apt/sources.list.d/google-chrome.list:4 W: Target DEP-11 (main/dep11/Components-amd64.yml) is configured multiple times in /etc/apt/sources.list.d/google-chrome.list:3 and /etc/apt/sources.list.d/google-chrome.list:4 W: Target DEP-11 (main/dep11/Components-all.yml) is configured multiple times in /etc/apt/sources.list.d/google-chrome.list:3 and /etc/apt/sources.list.d/google-chrome.list:4 W: Target DEP-11-icons (main/dep11/icons-64x64.tar) is configured multiple times in /etc/apt/sources.list.d/google-chrome.list:3 and /etc/apt/sources.list.d/google-chrome.list:4 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libffi/+bug/1917620/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
