This commit addresses issue #4268 where crewAI's restrictive tokenizers
constraint (using ~= operator) prevented using recent versions of
transformers (4.51+) which require tokenizers >= 0.21.
Changes:
- Changed tokenizers constraint from ~=0.20.3 to >=0.20.3
- Added test to verify the constraint remains flexible
The ~= operator was too restrictive as it only allows patch version
updates (tokenizers~=0.20.3 means >=0.20.3,<0.21.0). This caused
dependency resolution failures when installing transformers 4.51+.
crewAI does not directly import or use tokenizers - it is a transitive
dependency. chromadb only requires tokenizers>=0.13.2 with no upper
bound, so relaxing this constraint is safe.
Fixes#4268
Co-Authored-By: João <joao@crewai.com>
7564d71163