Could we strictly install from a poetry.lock file?

• I have searched the issues of this repo and believe that this is not a duplicate.
• I have searched the documentation and believe that my question is not covered.

Feature Request

Is it possible to create a poetry install option that only installs from a poetry.lock file and fails if it cannot be found?

A poetry.lock file was accidentally deleted in one of my projects and it didn't cause CI to break. But when other developers tried to install the project, it took them a really long time to run poetry install because it wasn't reading from a lock file anymore and doing all the dependency management from scratch. In the future, we'd like to catch these mistakes automatically, so it would be awesome to have something that behaves like this:

$ ls | grep poetry.lock
poetry.lock

$ poetry install --from-lock
... (success)

$ rm poetry.lock

$ poetry install --from-lock
ERROR: poetry.lock was not found

A workaround is pretty trivial, but it would be cool if it was supported out-of-the-box 😄

if [ ! -e poetry.lock ]; then
    echo "poetry.lock file not found. aborting installation" >2
    exit 1
fi

poetry install

Start by locating the implementation of the poetry install command and its existing lock-file handling. Check how the command behaves when poetry.lock is absent, then add and test an option that fails in that case while continuing to install from the lock file when present.