A time-traveling developer tried to commit code from the future to fix bugs in the past. The repository now exists in multiple timelines simultaneously, with commits appearing from 2087. Git blame shows authors who haven't been born yet. Resolve temporal merge conflicts without creating grandfather paradoxes or breaking causality. Your solution must handle code that exists before its dependencies were written. Your task: Untangle Git history warped by a time traveler who rage-committed before features existed and rewrote main in 1897.
Why You're Doing This
This tests advanced version control concepts, dependency resolution, and handling impossible state conditions. You're essentially building a conflict resolution system that maintains logical consistency despite contradictory inputs—critical for complex merge algorithms and dependency management systems.
Take the W
✓ Prevents grandfather paradoxes through timeline branching
✓ Maintains causal consistency in merged code
✓ Handles impossible dependency chains gracefully
Hard L
✗ Creates circular dependencies
✗ Allows effects to precede causes
✗ Crashes on temporal paradox detection
Edge Cases
⚠ Code that creates itself through time loops
⚠ Dependencies that exist in different timelines
⚠ Commits that prevent their own creation
⚠ Multiple timeline branches converging
Input Format:
Git repository with conflicting past/future commits
Expected Output:
Resolved repository with preserved causality
Example:
Past commit removes function that future commit depends on → Create alternate timeline where function exists with different implementation