turpo prune fails to parse lockfile: invalid type: string

[spieslies]

Verify canary release

• I verified that the issue exists in the latest Turborepo canary release.

Link to code that reproduces this issue

none

What package manager are you using / does the bug impact?

npm

What operating system are you using?

Linux

Which canary version will you have in your reproduction?

2.2.4-canary.0

Describe the Bug

Turbo prune fails with following error:
unable to parse yaml: @adobe/css-tools@^4.4.0: invalid type: string "version \"4.4.0\" expected struct Entry at line 6 column 3

Expected Behavior

Turbo prune works without any errors

To Reproduce

• set up some turborepo example
• install @scalar/nestjs-api-reference
• run turbo prune

Additional context

No response

[chris-olszewski]

Can you please provide a reproduction repository? The error message indicates that PNPM is being used, but you listed npm as a package manager so I'm not sure what is going on.