fix(task): resolve hanging issue with multiple depends_post

[jdx]

Summary

• Fixed hanging/infinite loop when tasks have multiple depends_post entries
• The bug was caused by resolve_depends incorrectly iterating through ALL tasks instead of just using the current task's dependencies
• Added comprehensive e2e test and unit test to prevent regression

The Problem

Previously, when a task had multiple depends_post entries like:

[tasks.baz]
run = "echo baz"
depends_post = ["foo", "bar"]

The task would hang indefinitely due to circular dependencies being created in the dependency graph.

The Fix

Changed resolve_depends in src/task/mod.rs to use only self.depends_post instead of iterating through all tasks_to_run. This ensures each task only uses its own post-dependencies, preventing circular dependencies.

Test plan

• Added e2e test test_task_depends_post_multiple that reproduces the issue
• Added unit test to verify the fix
• Verified existing test_task_depends_post test still passes
• All task-related tests pass

Fixes: #4398

🤖 Generated with Claude Code

[Copilot]

Pull Request Overview

This PR fixes a hanging issue that occurred when tasks have multiple depends_post entries by correcting the dependency resolution logic in the task execution system.

Key changes:

• Fixed resolve_depends method to use only the current task's dependencies instead of iterating through all tasks
• Added comprehensive e2e and unit tests to prevent regression

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
src/task/mod.rs	Fixed dependency resolution logic and added unit test for the fix
e2e/tasks/test_task_depends_post_multiple	Added e2e test to verify multiple depends_post entries work correctly

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}

[Copilot]

[nitpick] The variable name depends_post is misleading here. Since this is now using self.depends_post instead of iterating through all tasks, consider renaming it to self_depends_post or current_task_depends_post to clarify that it only contains dependencies for the current task.

[github-actions]

Hyperfine Performance

mise x -- echo

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
mise-2025.9.2 x -- echo	18.7 ± 0.6	18.2	27.9	1.00
mise x -- echo	18.7 ± 0.2	18.2	20.0	1.00 ± 0.03

mise env

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
mise-2025.9.2 env	18.2 ± 0.3	17.6	21.3	1.00
mise env	18.3 ± 0.7	17.5	24.9	1.01 ± 0.04

mise hook-env

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
mise-2025.9.2 hook-env	17.9 ± 0.3	17.4	21.9	1.01 ± 0.02
mise hook-env	17.8 ± 0.3	17.3	21.4	1.00

mise ls

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
mise-2025.9.2 ls	16.5 ± 0.8	15.8	27.2	1.00
mise ls	16.6 ± 0.7	15.8	25.1	1.00 ± 0.07

xtasks/test/perf

Command	mise-2025.9.2	mise	Variance
install (cached)	167ms	✅ 102ms	+63%
ls (cached)	63ms	63ms	+0%
bin-paths (cached)	67ms	68ms	-1%
task-ls (cached)	495ms	473ms	+4%

✅ Performance improvement: install cached is 63%