At first glance, it really seems like diaspora-installer is affected by the following bug :
https://github.com/diaspora/diaspora/issues/7653 First introduced in bundler v1.16.0 by : https://github.com/bundler/bundler/commit/8ccf49c3b4a086f1e0cad2130dc30c04304175b7 I confirmed both Zesty system and autopkgtest uses bundler 1.16.0 : * Zesty affected system : # gem list | grep -i bundler bundler (1.16.0) * Zesty Autopkgtest (mentioned above): Using bundler 1.16.0 Seems like this has been addressed upstream with commit (first introduced upstream in v0.7.1.1) : commit 63fcc9c1bcfe5a5033344358fff13ab803f724a7 Author: Benjamin Neff <benja...@coding4coffee.ch> Date: Sat Oct 28 19:14:35 2017 +0200 Fix compatibility with Bundler 1.6 Stop using `Bundler.settings.with`, because it will be removed from Bundler 1.6. Also, as described in #7653, we could use `Bundler.settings[:with]`, but that would be internal API again, so it probably breaks again in the future. That's why I added a `BundlerHelper` module to parse the required optional group from our config files, without the use of any internal Bundler API. Fixes #7653 - Eric ** No longer affects: ruby-defaults (Ubuntu) ** No longer affects: ruby-defaults (Ubuntu Zesty) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1732520 Title: diaspora-installer installation fails To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/diaspora-installer/+bug/1732520/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs