问题
Following situation:
- Library X (maintained by me) depends on library Y version ^2.0.
- For library Y, a newer major version 3 exists that is generally better.
- Upgrading code built on top of Y 2 to Y 3 is straightforward, but requires a few adjustments to the existing code nonetheless.
- Y is a dependency of X, so upgrading it would force users of X to upgrade, too, and thus also requires updating code that uses Y outside of X.
I'd like to make X installable with both Y 2 and Y 3. My approach would be to provide different versions of the code using Y and switch between the versions depending on the installed version, similar to C conditional compilation.
Questions:
- Is there a better approach to this?
- How would I implement conditional code like that?
- Any other comments or suggestions?
来源：https://stackoverflow.com/questions/48158317/using-different-code-depending-on-the-version-of-another-dependency