Payload
{
"action": "created",
"issue": {
"url": "https://api.github.com/repos/darkmatter/nixmac/issues/238",
"repository_url": "https://api.github.com/repos/darkmatter/nixmac",
"labels_url": "https://api.github.com/repos/darkmatter/nixmac/issues/238/labels{/name}",
"comments_url": "https://api.github.com/repos/darkmatter/nixmac/issues/238/comments",
"events_url": "https://api.github.com/repos/darkmatter/nixmac/issues/238/events",
"html_url": "https://github.com/darkmatter/nixmac/pull/238",
"id": 4547245528,
"node_id": "PR_kwDOSB6EzM7glMuT",
"number": 238,
"title": "feat: introduce git2 for faster read-only Git operations; add profiling support",
"user": {
"login": "scottmcmaster",
"id": 3137688,
"node_id": "MDQ6VXNlcjMxMzc2ODg=",
"avatar_url": "https://avatars.githubusercontent.com/u/3137688?v=4",
"gravatar_id": "",
"url": "https://api.github.com/users/scottmcmaster",
"html_url": "https://github.com/scottmcmaster",
"followers_url": "https://api.github.com/users/scottmcmaster/followers",
"following_url": "https://api.github.com/users/scottmcmaster/following{/other_user}",
"gists_url": "https://api.github.com/users/scottmcmaster/gists{/gist_id}",
"starred_url": "https://api.github.com/users/scottmcmaster/starred{/owner}{/repo}",
"subscriptions_url": "https://api.github.com/users/scottmcmaster/subscriptions",
"organizations_url": "https://api.github.com/users/scottmcmaster/orgs",
"repos_url": "https://api.github.com/users/scottmcmaster/repos",
"events_url": "https://api.github.com/users/scottmcmaster/events{/privacy}",
"received_events_url": "https://api.github.com/users/scottmcmaster/received_events",
"type": "User",
"user_view_type": "public",
"site_admin": false
},
"labels": [],
"state": "open",
"locked": false,
"assignees": [
{
"login": "scottmcmaster",
"id": 3137688,
"node_id": "MDQ6VXNlcjMxMzc2ODg=",
"avatar_url": "https://avatars.githubusercontent.com/u/3137688?v=4",
"gravatar_id": "",
"url": "https://api.github.com/users/scottmcmaster",
"html_url": "https://github.com/scottmcmaster",
"followers_url": "https://api.github.com/users/scottmcmaster/followers",
"following_url": "https://api.github.com/users/scottmcmaster/following{/other_user}",
"gists_url": "https://api.github.com/users/scottmcmaster/gists{/gist_id}",
"starred_url": "https://api.github.com/users/scottmcmaster/starred{/owner}{/repo}",
"subscriptions_url": "https://api.github.com/users/scottmcmaster/subscriptions",
"organizations_url": "https://api.github.com/users/scottmcmaster/orgs",
"repos_url": "https://api.github.com/users/scottmcmaster/repos",
"events_url": "https://api.github.com/users/scottmcmaster/events{/privacy}",
"received_events_url": "https://api.github.com/users/scottmcmaster/received_events",
"type": "User",
"user_view_type": "public",
"site_admin": false
}
],
"milestone": null,
"comments": 3,
"created_at": "2026-05-29T09:11:30Z",
"updated_at": "2026-05-31T01:15:20Z",
"closed_at": null,
"assignee": {
"login": "scottmcmaster",
"id": 3137688,
"node_id": "MDQ6VXNlcjMxMzc2ODg=",
"avatar_url": "https://avatars.githubusercontent.com/u/3137688?v=4",
"gravatar_id": "",
"url": "https://api.github.com/users/scottmcmaster",
"html_url": "https://github.com/scottmcmaster",
"followers_url": "https://api.github.com/users/scottmcmaster/followers",
"following_url": "https://api.github.com/users/scottmcmaster/following{/other_user}",
"gists_url": "https://api.github.com/users/scottmcmaster/gists{/gist_id}",
"starred_url": "https://api.github.com/users/scottmcmaster/starred{/owner}{/repo}",
"subscriptions_url": "https://api.github.com/users/scottmcmaster/subscriptions",
"organizations_url": "https://api.github.com/users/scottmcmaster/orgs",
"repos_url": "https://api.github.com/users/scottmcmaster/repos",
"events_url": "https://api.github.com/users/scottmcmaster/events{/privacy}",
"received_events_url": "https://api.github.com/users/scottmcmaster/received_events",
"type": "User",
"user_view_type": "public",
"site_admin": false
},
"author_association": "CONTRIBUTOR",
"issue_field_values": [],
"type": null,
"active_lock_reason": null,
"draft": false,
"pull_request": {
"url": "https://api.github.com/repos/darkmatter/nixmac/pulls/238",
"html_url": "https://github.com/darkmatter/nixmac/pull/238",
"diff_url": "https://github.com/darkmatter/nixmac/pull/238.diff",
"patch_url": "https://github.com/darkmatter/nixmac/pull/238.patch",
"merged_at": null
},
"body": "## Summary\r\n\r\nIntroduces a git2 dependency and moves the most-clearly-safe git utilities from exec.rs into a new file query.rs with clear comments at the top of each file as to what should go where and why. I also introduced profiling support and docs.\r\n\r\nThe reason is this profile, which demonstrates that of the things we can actually control (without major architectural changes) during evolution, the git operations are pretty much the most expensive:\r\n\r\n<img width=\"816\" height=\"155\" alt=\"before\" src=\"https://github.com/user-attachments/assets/c889d9ea-c172-4ba4-aee4-0f127f22ea09\" />\r\n\r\nAfterwards it looks more like:\r\n\r\n<img width=\"1049\" height=\"125\" alt=\"after\" src=\"https://github.com/user-attachments/assets/cd61ece3-5b89-47c4-acad-7619f72368b4\" />\r\n\r\nwhere the individual functions migrated to git2 show up elsewhere but generally are more like:\r\n\r\n<img width=\"655\" height=\"136\" alt=\"Screenshot 2026-05-29 at 4 44 04 PM\" src=\"https://github.com/user-attachments/assets/a4b661ed-165c-4949-a072-63fbff5145e3\" />\r\n\r\nThere are a couple of reasons why it's not immediately clear that it's possible to just blanket-migrate everything in exec.rs to git2, and I won't go into all that here (although I added some clues in comments in the code)...but I will continue looking at opportunities.\r\n\r\n## Test Plan\r\n\r\nManual testing, profiling, added a bunch of new unit tests for the migrated functions.\r\n\r\n## Docs\r\n\r\n- [x] Docs updated\r\n- [ ] No docs update needed\r\n",
"reactions": {
"url": "https://api.github.com/repos/darkmatter/nixmac/issues/238/reactions",
"total_count": 0,
"+1": 0,
"-1": 0,
"laugh": 0,
"hooray": 0,
"confused": 0,
"heart": 0,
"rocket": 0,
"eyes": 0
},
"timeline_url": "https://api.github.com/repos/darkmatter/nixmac/issues/238/timeline",
"performed_via_github_app": null,
"state_reason": null
},
"comment": {
"url": "https://api.github.com/repos/darkmatter/nixmac/issues/comments/4585348554",
"html_url": "https://github.com/darkmatter/nixmac/pull/238#issuecomment-4585348554",
"issue_url": "https://api.github.com/repos/darkmatter/nixmac/issues/238",
"id": 4585348554,
"node_id": "IC_kwDOSB6EzM8AAAABEU7dyg",
"user": {
"login": "scottmcmaster",
"id": 3137688,
"node_id": "MDQ6VXNlcjMxMzc2ODg=",
"avatar_url": "https://avatars.githubusercontent.com/u/3137688?v=4",
"gravatar_id": "",
"url": "https://api.github.com/users/scottmcmaster",
"html_url": "https://github.com/scottmcmaster",
"followers_url": "https://api.github.com/users/scottmcmaster/followers",
"following_url": "https://api.github.com/users/scottmcmaster/following{/other_user}",
"gists_url": "https://api.github.com/users/scottmcmaster/gists{/gist_id}",
"starred_url": "https://api.github.com/users/scottmcmaster/starred{/owner}{/repo}",
"subscriptions_url": "https://api.github.com/users/scottmcmaster/subscriptions",
"organizations_url": "https://api.github.com/users/scottmcmaster/orgs",
"repos_url": "https://api.github.com/users/scottmcmaster/repos",
"events_url": "https://api.github.com/users/scottmcmaster/events{/privacy}",
"received_events_url": "https://api.github.com/users/scottmcmaster/received_events",
"type": "User",
"user_view_type": "public",
"site_admin": false
},
"created_at": "2026-05-31T01:15:20Z",
"updated_at": "2026-05-31T01:15:20Z",
"body": "> Nice, this profiler looks useful I was just wondering how to count allocations.\r\n\r\nIt's a separate \"Service\" in Instruments (which I have not tried yet on this project). See https://swiftdevjournal.com/measuring-your-apps-memory-usage-with-instruments/ (Disregard if that was not a question and you already figured it out ;-))",
"author_association": "MEMBER",
"reactions": {
"url": "https://api.github.com/repos/darkmatter/nixmac/issues/comments/4585348554/reactions",
"total_count": 0,
"+1": 0,
"-1": 0,
"laugh": 0,
"hooray": 0,
"confused": 0,
"heart": 0,
"rocket": 0,
"eyes": 0
},
"performed_via_github_app": null
},
"repository": {
"id": 1209959628,
"node_id": "R_kgDOSB6EzA",
"name": "nixmac",
"full_name": "darkmatter/nixmac",
"private": false,
"owner": {
"login": "darkmatter",
"id": 17834193,
"node_id": "MDEyOk9yZ2FuaXphdGlvbjE3ODM0MTkz",
"avatar_url": "https://avatars.githubusercontent.com/u/17834193?v=4",
"gravatar_id": "",
"url": "https://api.github.com/users/darkmatter",
"html_url": "https://github.com/darkmatter",
"followers_url": "https://api.github.com/users/darkmatter/followers",
"following_url": "https://api.github.com/users/darkmatter/following{/other_user}",
"gists_url": "https://api.github.com/users/darkmatter/gists{/gist_id}",
"starred_url": "https://api.github.com/users/darkmatter/starred{/owner}{/repo}",
"subscriptions_url": "https://api.github.com/users/darkmatter/subscriptions",
"organizations_url": "https://api.github.com/users/darkmatter/orgs",
"repos_url": "https://api.github.com/users/darkmatter/repos",
"events_url": "https://api.github.com/users/darkmatter/events{/privacy}",
"received_events_url": "https://api.github.com/users/darkmatter/received_events",
"type": "Organization",
"user_view_type": "public",
"site_admin": false
},
"html_url": "https://github.com/darkmatter/nixmac",
"description": "Home manager and nix-darwin that understands plain English",
"fork": false,
"url": "https://api.github.com/repos/darkmatter/nixmac",
"forks_url": "https://api.github.com/repos/darkmatter/nixmac/forks",
"keys_url": "https://api.github.com/repos/darkmatter/nixmac/keys{/key_id}",
"collaborators_url": "https://api.github.com/repos/darkmatter/nixmac/collaborators{/collaborator}",
"teams_url": "https://api.github.com/repos/darkmatter/nixmac/teams",
"hooks_url": "https://api.github.com/repos/darkmatter/nixmac/hooks",
"issue_events_url": "https://api.github.com/repos/darkmatter/nixmac/issues/events{/number}",
"events_url": "https://api.github.com/repos/darkmatter/nixmac/events",
"assignees_url": "https://api.github.com/repos/darkmatter/nixmac/assignees{/user}",
"branches_url": "https://api.github.com/repos/darkmatter/nixmac/branches{/branch}",
"tags_url": "https://api.github.com/repos/darkmatter/nixmac/tags",
"blobs_url": "https://api.github.com/repos/darkmatter/nixmac/git/blobs{/sha}",
"git_tags_url": "https://api.github.com/repos/darkmatter/nixmac/git/tags{/sha}",
"git_refs_url": "https://api.github.com/repos/darkmatter/nixmac/git/refs{/sha}",
"trees_url": "https://api.github.com/repos/darkmatter/nixmac/git/trees{/sha}",
"statuses_url": "https://api.github.com/repos/darkmatter/nixmac/statuses/{sha}",
"languages_url": "https://api.github.com/repos/darkmatter/nixmac/languages",
"stargazers_url": "https://api.github.com/repos/darkmatter/nixmac/stargazers",
"contributors_url": "https://api.github.com/repos/darkmatter/nixmac/contributors",
"subscribers_url": "https://api.github.com/repos/darkmatter/nixmac/subscribers",
"subscription_url": "https://api.github.com/repos/darkmatter/nixmac/subscription",
"commits_url": "https://api.github.com/repos/darkmatter/nixmac/commits{/sha}",
"git_commits_url": "https://api.github.com/repos/darkmatter/nixmac/git/commits{/sha}",
"comments_url": "https://api.github.com/repos/darkmatter/nixmac/comments{/number}",
"issue_comment_url": "https://api.github.com/repos/darkmatter/nixmac/issues/comments{/number}",
"contents_url": "https://api.github.com/repos/darkmatter/nixmac/contents/{+path}",
"compare_url": "https://api.github.com/repos/darkmatter/nixmac/compare/{base}...{head}",
"merges_url": "https://api.github.com/repos/darkmatter/nixmac/merges",
"archive_url": "https://api.github.com/repos/darkmatter/nixmac/{archive_format}{/ref}",
"downloads_url": "https://api.github.com/repos/darkmatter/nixmac/downloads",
"issues_url": "https://api.github.com/repos/darkmatter/nixmac/issues{/number}",
"pulls_url": "https://api.github.com/repos/darkmatter/nixmac/pulls{/number}",
"milestones_url": "https://api.github.com/repos/darkmatter/nixmac/milestones{/number}",
"notifications_url": "https://api.github.com/repos/darkmatter/nixmac/notifications{?since,all,participating}",
"labels_url": "https://api.github.com/repos/darkmatter/nixmac/labels{/name}",
"releases_url": "https://api.github.com/repos/darkmatter/nixmac/releases{/id}",
"deployments_url": "https://api.github.com/repos/darkmatter/nixmac/deployments",
"created_at": "2026-04-14T00:37:13Z",
"updated_at": "2026-05-29T02:08:22Z",
"pushed_at": "2026-05-31T01:08:51Z",
"git_url": "git://github.com/darkmatter/nixmac.git",
"ssh_url": "git@github.com:darkmatter/nixmac.git",
"clone_url": "https://github.com/darkmatter/nixmac.git",
"svn_url": "https://github.com/darkmatter/nixmac",
"homepage": "https://nixmac.com",
"size": 678710,
"stargazers_count": 5,
"watchers_count": 5,
"language": "Rust",
"has_issues": true,
"has_projects": true,
"has_downloads": true,
"has_wiki": true,
"has_pages": false,
"has_discussions": false,
"forks_count": 1,
"mirror_url": null,
"archived": false,
"disabled": false,
"open_issues_count": 84,
"license": {
"key": "mit",
"name": "MIT License",
"spdx_id": "MIT",
"url": "https://api.github.com/licenses/mit",
"node_id": "MDc6TGljZW5zZTEz"
},
"allow_forking": true,
"is_template": false,
"web_commit_signoff_required": false,
"has_pull_requests": true,
"pull_request_creation_policy": "all",
"topics": [
"home-manager",
"nix",
"nix-darwin",
"nix-flake",
"opencode"
],
"visibility": "public",
"forks": 1,
"open_issues": 84,
"watchers": 5,
"default_branch": "develop",
"custom_properties": {}
},
"organization": {
"login": "darkmatter",
"id": 17834193,
"node_id": "MDEyOk9yZ2FuaXphdGlvbjE3ODM0MTkz",
"url": "https://api.github.com/orgs/darkmatter",
"repos_url": "https://api.github.com/orgs/darkmatter/repos",
"events_url": "https://api.github.com/orgs/darkmatter/events",
"hooks_url": "https://api.github.com/orgs/darkmatter/hooks",
"issues_url": "https://api.github.com/orgs/darkmatter/issues",
"members_url": "https://api.github.com/orgs/darkmatter/members{/member}",
"public_members_url": "https://api.github.com/orgs/darkmatter/public_members{/member}",
"avatar_url": "https://avatars.githubusercontent.com/u/17834193?v=4",
"description": ""
},
"enterprise": {
"id": 469843,
"slug": "darkmatter",
"name": "darkmatter",
"node_id": "E_kgDOAAcrUw",
"avatar_url": "https://avatars.githubusercontent.com/b/469843?v=4",
"description": "",
"website_url": "darkmatter.io",
"html_url": "https://github.com/enterprises/darkmatter",
"created_at": "2025-09-07T16:01:00Z",
"updated_at": "2026-05-09T15:34:55Z"
},
"sender": {
"login": "scottmcmaster",
"id": 3137688,
"node_id": "MDQ6VXNlcjMxMzc2ODg=",
"avatar_url": "https://avatars.githubusercontent.com/u/3137688?v=4",
"gravatar_id": "",
"url": "https://api.github.com/users/scottmcmaster",
"html_url": "https://github.com/scottmcmaster",
"followers_url": "https://api.github.com/users/scottmcmaster/followers",
"following_url": "https://api.github.com/users/scottmcmaster/following{/other_user}",
"gists_url": "https://api.github.com/users/scottmcmaster/gists{/gist_id}",
"starred_url": "https://api.github.com/users/scottmcmaster/starred{/owner}{/repo}",
"subscriptions_url": "https://api.github.com/users/scottmcmaster/subscriptions",
"organizations_url": "https://api.github.com/users/scottmcmaster/orgs",
"repos_url": "https://api.github.com/users/scottmcmaster/repos",
"events_url": "https://api.github.com/users/scottmcmaster/events{/privacy}",
"received_events_url": "https://api.github.com/users/scottmcmaster/received_events",
"type": "User",
"user_view_type": "public",
"site_admin": false
},
"installation": {
"id": 131074261,
"node_id": "MDIzOkludGVncmF0aW9uSW5zdGFsbGF0aW9uMTMxMDc0MjYx"
}
}