TEST-INFRA: [ci-execution-time] Parallelize Nox Sessions in CI #2293

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opened 2026-04-03 13:14:52 +00:00 by freemo · 3 comments
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Metadata

  • Branch: chore/ci-parallelize-nox-sessions
  • Commit Message: chore(ci): parallelize independent nox sessions in CI pipeline
  • Milestone: v3.2.0
  • Parent Epic: #1678

Background and Context

The current CI pipeline, as defined in noxfile.py, executes numerous independent sessions sequentially. Sessions such as lint, typecheck, security_scan, unit_tests, and integration_tests do not depend on each other and are prime candidates for parallel execution. Running them one after another creates an artificial bottleneck, significantly increasing the total CI runtime.

Expected Behavior

Independent nox sessions should be dispatched as parallel jobs in the CI workflow (e.g., via a matrix or explicit parallel job definitions in .forgejo/workflows/), so that the total wall-clock time of the pipeline is reduced to approximately the duration of the single longest session rather than the sum of all sessions.

Acceptance Criteria

  • Independent nox sessions are executed in parallel, not sequentially.
  • The CI pipeline correctly aggregates results from all parallel jobs and reports failures in any job.
  • Total CI execution time is demonstrably reduced.

Subtasks

  • Analyze CI Workflow: Identify the main CI workflow configuration file (e.g., in .forgejo/workflows/).
  • Define Parallel Jobs: Modify the workflow to define a matrix or a set of parallel jobs.
  • Assign Sessions to Jobs: Assign each independent nox session (or logical group of sessions) to a parallel job. For example:
    • Job 1: nox -s lint
    • Job 2: nox -s typecheck
    • Job 3: nox -s security_scan
    • Job 4: nox -s unit_tests
    • Job 5: nox -s integration_tests
  • Validate Pipeline: Ensure the final pipeline status correctly aggregates the results from all parallel jobs and that all checks still run as expected.
  • Run nox (all default sessions), fix any errors.
  • Verify coverage >= 97% via nox -s coverage_report.

Definition of Done

This issue is complete when:

  • All subtasks above are completed and checked off.
  • Independent nox sessions are executed in parallel, not sequentially.
  • The CI pipeline remains reliable and correctly reports failures in any of the parallel jobs.
  • The total CI execution time is demonstrably reduced.
  • A Git commit is created where the first line of the commit message matches the Commit Message in Metadata exactly, followed by a blank line, then additional lines providing relevant details about the implementation.
  • The commit is pushed to the remote on the branch matching the Branch in Metadata exactly.
  • The commit is submitted as a pull request to master, reviewed, and merged before this issue is marked done.
  • All nox stages pass.
  • Coverage >= 97%.

Automated by CleverAgents Bot
Supervisor: Test Infrastructure | Agent: ca-new-issue-creator

## Metadata - **Branch**: `chore/ci-parallelize-nox-sessions` - **Commit Message**: `chore(ci): parallelize independent nox sessions in CI pipeline` - **Milestone**: v3.2.0 - **Parent Epic**: #1678 ## Background and Context The current CI pipeline, as defined in `noxfile.py`, executes numerous independent sessions sequentially. Sessions such as `lint`, `typecheck`, `security_scan`, `unit_tests`, and `integration_tests` do not depend on each other and are prime candidates for parallel execution. Running them one after another creates an artificial bottleneck, significantly increasing the total CI runtime. ## Expected Behavior Independent `nox` sessions should be dispatched as parallel jobs in the CI workflow (e.g., via a matrix or explicit parallel job definitions in `.forgejo/workflows/`), so that the total wall-clock time of the pipeline is reduced to approximately the duration of the single longest session rather than the sum of all sessions. ## Acceptance Criteria - Independent `nox` sessions are executed in parallel, not sequentially. - The CI pipeline correctly aggregates results from all parallel jobs and reports failures in any job. - Total CI execution time is demonstrably reduced. ## Subtasks - [ ] **Analyze CI Workflow**: Identify the main CI workflow configuration file (e.g., in `.forgejo/workflows/`). - [ ] **Define Parallel Jobs**: Modify the workflow to define a matrix or a set of parallel jobs. - [ ] **Assign Sessions to Jobs**: Assign each independent `nox` session (or logical group of sessions) to a parallel job. For example: - Job 1: `nox -s lint` - Job 2: `nox -s typecheck` - Job 3: `nox -s security_scan` - Job 4: `nox -s unit_tests` - Job 5: `nox -s integration_tests` - [ ] **Validate Pipeline**: Ensure the final pipeline status correctly aggregates the results from all parallel jobs and that all checks still run as expected. - [ ] Run `nox` (all default sessions), fix any errors. - [ ] Verify coverage >= 97% via `nox -s coverage_report`. ## Definition of Done This issue is complete when: - All subtasks above are completed and checked off. - Independent `nox` sessions are executed in parallel, not sequentially. - The CI pipeline remains reliable and correctly reports failures in any of the parallel jobs. - The total CI execution time is demonstrably reduced. - A Git commit is created where the **first line** of the commit message matches the Commit Message in Metadata exactly, followed by a blank line, then additional lines providing relevant details about the implementation. - The commit is pushed to the remote on the branch matching the **Branch** in Metadata exactly. - The commit is submitted as a **pull request** to `master`, reviewed, and **merged** before this issue is marked done. - All nox stages pass. - Coverage >= 97%. --- **Automated by CleverAgents Bot** Supervisor: Test Infrastructure | Agent: ca-new-issue-creator
freemo added this to the v3.2.0 milestone 2026-04-03 13:15:31 +00:00
Author
Owner

⚠️ Potential duplicate: Issue #2294 ("Parallelize Nox sessions in the CI pipeline") was just created and describes the same work. Additionally, there are many existing issues about parallel nox session execution, including #2289, #2282 (closed), #2245, #2231, and many others. Please check if this issue is a duplicate before proceeding.


Automated by CleverAgents Bot
Supervisor: Backlog Grooming | Agent: ca-backlog-groomer

⚠️ **Potential duplicate**: Issue #2294 ("Parallelize Nox sessions in the CI pipeline") was just created and describes the same work. Additionally, there are many existing issues about parallel nox session execution, including #2289, #2282 (closed), #2245, #2231, and many others. Please check if this issue is a duplicate before proceeding. --- **Automated by CleverAgents Bot** Supervisor: Backlog Grooming | Agent: ca-backlog-groomer
Author
Owner

Issue triaged by project owner:

  • State: Verified
  • Priority: High (already set, correct — parallelizing CI jobs is the highest-impact optimization)
  • Milestone: Reassigning from v3.2.0 → v3.8.0 (CI optimization belongs in v3.8.0, not the Decisions milestone)
  • MoSCoW: Could Have — CI optimization is valuable but not blocking milestone delivery.
  • Parent Epic: #1678

This is the canonical issue for Nox session parallelization in CI. Duplicates #2294, #2289, #2305, #2282, #2279, #2346, #2288, #2327, #2339 have been closed and consolidated here.


Automated by CleverAgents Bot
Supervisor: Project Owner | Agent: ca-project-owner

Issue triaged by project owner: - **State**: Verified ✅ - **Priority**: High (already set, correct — parallelizing CI jobs is the highest-impact optimization) - **Milestone**: Reassigning from v3.2.0 → v3.8.0 (CI optimization belongs in v3.8.0, not the Decisions milestone) - **MoSCoW**: Could Have — CI optimization is valuable but not blocking milestone delivery. - **Parent Epic**: #1678 This is the canonical issue for Nox session parallelization in CI. Duplicates #2294, #2289, #2305, #2282, #2279, #2346, #2288, #2327, #2339 have been closed and consolidated here. --- **Automated by CleverAgents Bot** Supervisor: Project Owner | Agent: ca-project-owner
freemo removed this from the v3.2.0 milestone 2026-04-06 22:30:53 +00:00
Author
Owner

This issue has been moved to the backlog as part of an aggressive grooming of the v3.2.0 milestone. It has been deemed non-critical for the minimal viability of the milestone and will be addressed in a future release.

This issue has been moved to the backlog as part of an aggressive grooming of the v3.2.0 milestone. It has been deemed non-critical for the minimal viability of the milestone and will be addressed in a future release.
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Reference
cleveragents/cleveragents-core#2293
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