poetry add --dry-run modifies poetry.lock

[matthewhughes934]

• I am on the latest Poetry version.
• I have searched the issues of this repo and believe that this is not a duplicate.
• If an exception occurs when executing a command, I executed it again in debug mode (-vvv option).

• OS version and name: Debian GNU/Linux 10 (buster)
• Poetry version: 1.1.8 and 1.2.0a2
• Link of a Gist with the contents of your pyproject.toml file:

Issue

Basic reproduction (most output skipped for brevity)

$ poetry new poetry-demo
$ cd poetry-demo
$ poetry lock
# using git just to demonstrate diff
$ git init && git add pyproject.toml poetry.lock && git commit -m 'Lock the dependencies'
$ poetry add --dry-run requests
Using version ^2.26.0 for requests

Updating dependencies
Resolving dependencies... (0.1s)

Writing lock file

<--- snip --->
$ git diff --name-only 
poetry.lock

I would expect --dry-run to change nothing but poetry.lock is modified

[matthewhughes934]

I think this is just duplicating #3766

[github-actions]

This issue has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.