bundle install --deployment tries to rewrite Gemfile_next.lock #73

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1. bschrag620 commented on May 7, 2026

   

   bschrag620

   on May 7, 2026

   Last edited by bschrag620

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   I'm also seeing this. Did you ever get it resolved?

   ruby -v
   => 3.4.7
   
   rails -v
   => 8.0.2
   
   DEPENDENCIES_NEXT=1 rails -v
   => 8.1.3
   
   bundler -v
   => 2.6.2
   

   All local and docker container versions match. Gemfile_next.lock is being copied into the docker container and shows a rails version of 8.1.3 as expected.

   Edit:
   My issue is the reverse of yours. Running bundle install in the container seems to be attempting to use Gemfile.lock rather than Gemfile_next.lock.

   #OUTPUT
   Installing bootboot 0.2.2
   The dependencies in your gemfile changed, but the lockfile can't be updated because frozen mode is set
   
   You have added to the Gemfile:
   * rails (~> next_version)
   
   You have deleted from the Gemfile:
   * rails (~> current_version)
   

   Solution:
   Fixed the gemfile

   plugin "bootboot"
   
   # instead of 
   gem "bootboot"
   

   🤦