Rails: How to change Bundler default version

Question

bundler (2.0.1, default: 1.17.2)

How could I change the default to 2.0.1

When I installed I set gem install --default bundler -v 'X.x.x' but now I have 2 defaults. — Lomefin, Mar 10 '19 at 04:05
@Lomefin The previous version's gemspec must be removed from the /default directory. Eg `$ mv /usr/share/rvm/rubies/ruby-2.7.0/lib/ruby/gems/2.7.0/specifications/default/bundler-1.17.2.gemspec ../` Note that this command moves the spec from /default into /specifications. It is no longer a default. — AFOC, Mar 17 '20 at 19:52
I guess you are mistaking what default gems are. They are not indicating default versions. See: https://stdgems.org/. — skalee, Sep 26 '20 at 17:04

score 48 · Answer 1 · edited Sep 03 '22 at 08:06

48

Following https://bundler.io/guides/bundler_2_upgrade.html#upgrading-applications-from-bundler-1-to-bundler-2, here's what worked for me:

gem install --default bundler
gem update --system
bundle update --bundler

edited Sep 03 '22 at 08:06

Michaël Witrant

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answered Aug 12 '19 at 18:35

Steve K

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Promise Preston · Answer 2 · 2021-04-17T09:37:52.253

19

I had this same concern when trying to setup Bundler gem 2.2.11 as the default gem on my machine.

Here's how I achieved it:

First, I listed and uninstalled all other versions of the Bundler gem because I did not need them:

gem list bundler
gem uninstall bundler

If you encounter an error like this

Gem bundler-2.1.4 cannot be uninstalled because it is a default gem

Simply run the command below to get your ruby installation directory:

gem environment | grep "INSTALLATION DIRECTORY"

This should display an output like this. In my case my ruby version was 2.7.2:

- INSTALLATION DIRECTORY: /home/mycomputer/.rbenv/versions/2.7.2/lib/ruby/gems/2.7.0

Next, navigate to the specifications/default directory of the INSTALLATION PATH:

cd /home/mycomputer/.rbenv/versions/2.7.2/lib/ruby/gems/2.7.0/specifications/default

Remove/delete the bundler.gemspec file that you have there. In my case it was bundler-2.1.4.gemspec, so I ran the command:

rm bundler-2.1.4.gemspec

Next, I installed the Bundler gem 2.2.11 and made it the default gem:

gem install --default bundler -v 2.2.11

Next, I listed my Bundler versions:

gem list bundler

Finally, I updated my gems to use the newly installed Bundler:

gem update --system

That's all.

I hope this helps

edited Apr 17 '21 at 09:37

answered Mar 28 '21 at 16:27

Promise Preston

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1

Why couldn't you just `gem install --default bundler -v 2.2.11` earlier to solve the problem of not being able to remove the newer version? – iconoclast Jul 21 '21 at 23:43
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Doing so you end up with to different versions if the bundler gem, but both being marked as default @iconoclast. – Sebastián Palma Aug 24 '21 at 07:58
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Doing so results in **two** different versions of the `bundler` gem, both being marked as `default`. (Very sorry... I repeated what was already written because I cannot edit the comment.) Also, you may be able to resolve the issue of two default versions of bundler here: [How can I remove default version of bundler?](https://stackoverflow.com/a/59636874/664833) – user664833 Sep 22 '21 at 00:06
I still end up with a different default version when running `bundler -v` after successfully running those instructions. – mduboule Feb 23 '23 at 20:04

score 18 · Accepted Answer · answered Jun 25 '19 at 20:51

18

What helped me is to delete the current default manually from the folder lib\ruby\gems\2.6.0\specifications\default\
and then install fresh bundler as usually
gem install bundler
or as default
gem install --default bundler

answered Jun 25 '19 at 20:51

Inversion

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score 9 · Answer 4 · answered Mar 05 '20 at 17:13

You need to remove .spec file to remove the gem.

Steps:

gem env – try to search in provided list under GEM PATHS, in specifications/default
remove there bundler-VERSION.gemspec
install bundler, if you don't have specific: gem install bundler:VERSION --default

score 4 · Answer 5 · answered Sep 20 '21 at 09:40

4

gem install --default bundler:<version>

answered Sep 20 '21 at 09:40

Udit

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Already covered in another answer. – General Grievance Sep 21 '21 at 12:33

score 0 · Answer 6 · answered Mar 25 '21 at 15:15

You need to know where the default specs are, so use gem environment to find out.

the steps I used were:

gem environment
# note INSTALLATION DIRECTORY
cd <installation_dir>
cd specifications/default
rm bundler-2.1.4.gemspec
gem install --default bundler -v 2.2.11

Rohit Thakur · Answer 7 · 2022-07-08T07:44:53.333

0

Remove all default bundler versions. Commands:

$ gem environment
$ cd INSTALLATION DIRECTORY
$ cd specifications
$ cd default
$ rm bundler version
$ gem install bundler

edited Jul 08 '22 at 07:44

answered Jul 08 '22 at 07:42

Rohit Thakur

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Rails: How to change Bundler default version

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