Unnecessary tight version constraint limits FastAPI versions

[graipher]

Due to this line in the pyproject.toml file:

fastapi = "^0.38.1"

FastAPI versions newer than 0.38 cannot be used with this (current version of FastAPI is 0.75.2). When explicitly requesting a higher version the version solving fails (using poetry):

$ poetry update
Updating dependencies
Resolving dependencies... (0.0s)

  SolverProblemError

  Because prometheus-fastapi-instrumentator (5.8.0) depends on fastapi (>=0.38.1,<0.39.0)
   and no versions of prometheus-fastapi-instrumentator match >5.8.0,<6.0.0, prometheus-fastapi-instrumentator (>=5.8.0,<6.0.0) requires fastapi (>=0.38.1,<0.39.0).
  So, because my-repo depends on both fastapi (^0.75.0) and prometheus-fastapi-instrumentator (^5.8.0), version solving failed.

One solution would be relaxing the requirements:

fastapi = "^0.38"

or

fastapi = ">=0.38.1, <1.0.0"

[alexted]

Yeah, i have the same problem with current version of library - FastAPI and all dependent libraries have rolled back to the Stone Age. I have to manually specify the versions of the required libraries, but then prometheus-fastapi-instrumentator rolls back to the previous version, because they are "too new" for it...

[graipher]

I hot-fixed it by requiring "^5.7.1 for prometheus-fastapi-instrumentator in my repository for now. But an actual fix would be nice of course.

[trallnag]

Thanks for raising the issue