When push to production, it says modified: mix.lock

[loongmxbt]

When I push to production master, always need to git checkout -- mix.lock

local: Working directory has unstaged changes.

Changes not staged for commit:
  (use "git add <file>..." to update what will be committed)
  (use "git checkout -- <file>..." to discard changes in working directory)

	modified:   mix.lock

Should I add mix.lock into .gitignore?
How does the .lock file change after deploy? (I assume the dev and prod .lock should be same?)
Am I missing something, Thanks!

[loongmxbt]

Seems in my local dev, not mix phoenix.server to update mix.lock at first time.

Tried again, seems mix.lock changes.

[mrmicahcooper]

Hey @loongmxbt, It could be possible for your mix.lock file to change. Your mix file has some dependencies that are specific to dev?

That being said. This shouldn't make too big of a difference when deploying. When you git push to your production server, that push should overwrite any changes that may have been created by the previous deploy.

[hut8]

Just a thought: Are you using the same version of Elixir and Hex between dev and production? Mine randomly changed the order of some dependencies when I upgraded one of those.

[josephan]

@hut8 I knew I had the same Elixir version but I forgot about Hex. Thanks! I just run mix local.hex

[praisegeek]

Simply do git update-index --assume-unchanged mix.lock to prevent it from being tracked by git.