nrml
RefactoringPro problem

Repair the Deployment Dependency Planner

Build reproducible deployment waves with cycle and missing-service diagnostics.

The scenario

Build reproducible deployment waves with cycle and missing-service diagnostics.

A failure to reason about

Two equivalent service inventories produce different deployment waves, making a rollout plan hard to review.

Illustrative context for the topic. The exercise’s full requirements arrive in the workspace.

Questions to bring to your review

  • Which caller makes the reported behavior visible?
  • What focused regression would distinguish the current behavior from the requirement?
  • What existing behavior must remain intact after the change?

Skills you will practice

  • Dependency graphs
  • Topological order
  • Diagnostics

Read the existing code, reproduce the reported behavior, review proposed changes, and verify your final implementation. You can use AI assistance while staying responsible for the result.

Prepare with a worked example

See how nrml evaluates an attempt, including the limits of automated evidence.