Macos Dmg Builder

macOS DMG Builder

Overview

Use this skill to create a repeatable macOS release pipeline with signed and notarized .app and .dmg artifacts.

Prefer existing project scripts first. If the project does not already have release automation, scaffold it from assets/templates/ using the bundled script.

Onboarding Walkthrough (Mandatory)

Before running release commands, collect or confirm these values. Do not skip this step.

1. repo_root (absolute path to target repo)
2. app_name (display name of the app in Finder/DMG)
3. xcode_scheme (build/archive scheme)
4. bundle_id (for entitlement/signing sanity checks)
5. artifact_dir (where .app and .dmg should be written)
6. team_id (Apple Developer Team ID)
7. apple_id (Apple ID used for notarization)
8. notary_profile (Keychain profile name for notarytool)
9. signing_identity preference (display name or SHA-1 hash)

If any required value is missing, ask focused questions before proceeding. Use defaults only when they are verifiably correct for the repo.

Onboarding defaults for LemonNotes:

• repo_root: /Users/jakerains/Projects/LemonNotes
• app_name: LemonNotes
• xcode_scheme: LemonNotesMac
• artifact_dir: macos/.release/output
• team_id: 47347VQHQV
• notary_profile: LemonNotesApp-Notarize

Run preflight checks immediately after onboarding:

• scripts/preflight_release_env.sh --profile

Workflow

1) Detect existing release automation

1. Check for scripts/macos-release.sh.
2. Check for scripts/macos-notary-setup.sh.
3. Check Makefile for macos-release and macos-notary-setup targets.

2) If missing, scaffold release automation

1. Run scripts/scaffold_release_pipeline.sh --repo .
2. Add --apply-makefile to append targets automatically.
3. Add --force only when replacing existing scripts intentionally.

3) Configure notary profile (one-time per machine/profile)

1. Run scripts/setup_notary_profile.sh.
2. Default profile for LemonNotes is LemonNotesApp-Notarize.
3. Use app-specific password input securely (prompt or env var) and never print it in output.

4) Run release

1. Run make macos-release from repo root.
2. Confirm phases:

• archive
• app notarization/stapling
• DMG creation/signing
• DMG notarization/stapling

5) Verify and report

1. Run scripts/verify_release_artifacts.sh.
2. Report:

• output paths
• notarization/staple validation status
• SHA256 of DMG

Credential and Security Rules

• Never echo app-specific passwords to terminal output.
• Prefer prompting interactively for secrets.
• If a user shares a password in chat, use it only for immediate setup and avoid repeating it.
• Prefer app-specific notary profiles (e.g., LemonNotesApp-Notarize) over reusing unrelated profile names.

Troubleshooting Quick Fixes

• Duplicate Developer ID name ambiguity:
• Resolve to SHA-1 with security find-identity -v -p codesigning.
• Sign with hash identity, not display name.
• Profile not found:
• Run scripts/check_notary_profile.sh .
• Run scripts/setup_notary_profile.sh if missing.
• Release script exits unexpectedly:
• Re-run with tracing: bash -x scripts/macos-release.sh.
• Continue from first failing phase.

LemonNotes Quick Path

1. Run onboarding checklist from references/onboarding-playbook.md.
2. Run make macos-notary-setup.
3. Run make macos-release.
4. Expect artifacts in macos/.release/output.

Read references/lemonnotes-integration.md for exact LemonNotes defaults and conventions.

Resources

• scripts/inspect_signing_identities.sh: list usable Developer ID identities and suggested exports.
• scripts/preflight_release_env.sh: preflight check for tools, certs, and optional notary profile.
• scripts/check_notary_profile.sh: validate a notary profile from Keychain.
• scripts/setup_notary_profile.sh: create/update notary profile credentials.
• scripts/scaffold_release_pipeline.sh: install release/notary scripts into a repo.
• scripts/verify_release_artifacts.sh: validate signatures/staples and print DMG hash.
• references/onboarding-playbook.md: onboarding interview + zero-to-release checklist.
• references/workflow.md: generic release flow and checks.
• references/lemonnotes-integration.md: LemonNotes-specific defaults.
• assets/templates/: template scripts and Makefile snippet.

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: jakerains
• Source: jakerains/AgentSkills
• License: MIT

Install and usage instructions live in the source repository linked above.