Thank you. I added my own workaround as a comment.
Pavel Valena wrote on 07/17/18 01:27:
> ----- Original Message -----
>> From: "Aleksandar Kostadinov" <akostadi(a)redhat.com>
>> To: "Ruby SIG mailing list" <ruby-sig(a)lists.fedoraproject.org>
>> Sent: Monday, July 16, 2018 4:44:16 PM
>> Subject: bundler changes in Fedora 28
>>
>> Hi,
>>
>> anybody know what changed so that bundler now tries to install either
>> via `sudo` or in `vendor/bundle`?
>
> Hello,
> yes, there's this bug:
>
>
https://bugzilla.redhat.com/show_bug.cgi?id=1574594
>
> Which, AFAICT, contains a workaround for the issue.
>
> HIH,
> Pavel
>
>>
>> Any ideas how to restore old behavior where gems were installed
>> user-wide in `~/.gem`?
>>
>> P.S. I presently do this hack
>>
>> > export BUNDLE_PATH=$(ls -t -U | ruby -e 'puts Gem.user_dir')
>> > export PATH="$PATH:$BUNDLE_PATH/bin"
>>