buck2

Repository

buck2

Build system, successor to Buck

523.1Performance (ETV)

33%Growth

67%KTLO

Average Developer Performance (ETV)

Year-by-year Trend:+473%

2026Previous year

Repository Performance Breakdown

Performance has many faces. Navigara breaks down the effort to visualize what parts of codebase has been changed and where energy flowed. Our Architect AI can break the performance even further into particular components and patterns.

Change Type Distribution

Breakdown of file changes over time. Play the timeline to see how change types evolved across periods.

Jan 2025 · 1772 changes

Jan 2025Mar 2025Jun 2025Aug 2025Oct 2025Jan 2026Mar 2026

Bug Attribution

Beta

Monthly overview of bugs introduced and fixed, based on symbol-level commit analysis. Fixes show whether the original author fixed their own bug (self-fix) or someone else did (cross-fix).

2106Bugs Attributed

22%Self-fix Rate

Jakob DegenTop Introducer (124)

Jakob DegenTop Fixer (193)

How it works

Methodology

Bug attribution uses symbol-level matching from commit history. For each fix commit, we look at the changed symbols (functions, classes, methods) and trace backwards to find who last modified that symbol in a non-fix commit. This person is the probable bug introducer. The algorithm only works when commits have symbol-level data from the Navigara analysis engine — the coverage rate shows what percentage of fix commits had this data available.

The Semantic Problem: Growth vs. Fixes Inversion

The current metrics model has a semantic inversion: when developer A creates a feature with a bug, they receive grow (positive). When developer B fixes that bug, they receive waste (negative). The bug creator is rewarded while the fixer is penalized. Bug attribution addresses this by explicitly tracking who introduced bugs and who fixed them, providing a more accurate picture of code quality contributions.

Proposed API Endpoint

Currently computed client-side from commit data. Ideal server-side endpoint:

POST /v1/repositories/{repositoryId}/bug-attributions
Content-Type: application/json

Request:
{
  "startTime": "2025-01-01T00:00:00Z",
  "endTime": "2025-12-31T23:59:59Z"
}

Response:
{
  "totalBugsAttributed": 42,
  "selfFixRate": 35,
  "coverageRate": 78,
  "attributions": [
    {
      "filePath": "src/lib/auth.ts",
      "symbol": "validateToken",
      "introducer": { "name": "Alice", "email": "alice@co.com", "commitSha": "abc123" },
      "fixer": { "name": "Bob", "email": "bob@co.com", "commitSha": "def456" },
      "fixedAt": "2025-06-15T10:30:00Z",
      "isSelfFix": false
    }
  ]
}

Investment Quality

Beta

Reclassifies engineering effort based on bug attribution. Commits that introduced bugs are retrospectively counted as poor investments.

40%Productive TimeGrowth 66% + Fixes 34%

45%Maintenance Time

14%Wasted Time

How it works

Methodology

Investment Quality reclassifies engineering effort based on bug attribution data. Commits identified as buggy origins (those that introduced bugs later fixed by someone) have their grow and maintenance time moved into the Wasted Time category. Their waste (fix commits) remains counted as productive. All other commits retain their standard classification: grow is productive, maintenance is maintenance, and waste (fixes) is productive.

Relationship to Growth / Maintenance / Fixes

The standard model classifies commits as Growth, Maintenance, or Fixes. Investment Quality adds a quality lens: a commit that introduced a bug is retrospectively counted as a poor investment — the engineering time spent on it was wasted because it ultimately required additional fix work. Fix commits (Fixes in the standard model) are reframed as productive, because fixing bugs is valuable work.

Proposed API Endpoint

Currently computed client-side from commit and bug attribution data. Ideal server-side endpoint:

POST /v1/organizations/{orgId}/investment-quality
Content-Type: application/json

Request:
{
  "startTime": "2025-01-01T00:00:00Z",
  "endTime": "2025-12-31T23:59:59Z",
  "bucketSize": "BUCKET_SIZE_MONTH",
  "groupBy": ["repository_id" | "deliverer_email"]
}

Response:
{
  "productivePct": 74,
  "maintenancePct": 18,
  "wastedPct": 8,
  "buckets": [
    {
      "bucketStart": "2025-01-01T00:00:00Z",
      "productive": 4.2,
      "maintenance": 1.8,
      "wasted": 0.6
    }
  ]
}

Recent Activity

Latest analyzed commits in this repository.

Hash	Message	Author	Effort
7e09501	Clear PYTHON_GIL from env after interpreter init	Itamar Oren	waste
15feaf5	Include --target-universe in representative_config_flags	Eric Griffith	grow
7230c79	Add native cython_library and cython_static_extension rules	Jason Fried	grow
d35c4db	Extend stack trace on main test timeouts capability to Instrumentation tests	Omkar Yadav	grow
21b8012	Only generate shared library interfaces for prebuilt libraries in defined_only mode	Nuri Amari	waste
8720398	Move extra_attributes from java.bzl into rule declarations in java_rules.bzl	Ian Childs	maint
355cf42	Move extra_attributes from kotlin.bzl into rule declarations in kotlin_rules.bzl	Ian Childs	grow
1e0046e	Remove no-op -no-reflect flag from kotlinc	Ian Childs	–
5c09597	Remove always-true Python 2.6 version guard from prelude __test_main__.py	Kasra Ghodsi	maint
e5eb58b	Move extra_attributes from android.bzl into rule declarations in android_rules.bzl	Ian Childs	maint

7e09501Itamar Oren

Clear PYTHON_GIL from env after interpreter init

waste

15feaf5Eric Griffith

Include --target-universe in representative_config_flags

grow

7230c79Jason Fried

Add native cython_library and cython_static_extension rules

grow

d35c4dbOmkar Yadav

Extend stack trace on main test timeouts capability to Instrumentation tests

grow

21b8012Nuri Amari

Only generate shared library interfaces for prebuilt libraries in defined_only mode

waste

8720398Ian Childs

Move extra_attributes from java.bzl into rule declarations in java_rules.bzl

maint

355cf42Ian Childs

Move extra_attributes from kotlin.bzl into rule declarations in kotlin_rules.bzl

grow

1e0046eIan Childs

Remove no-op -no-reflect flag from kotlinc

–

5c09597Kasra Ghodsi

Remove always-true Python 2.6 version guard from prelude __test_main__.py

maint

e5eb58bIan Childs

Move extra_attributes from android.bzl into rule declarations in android_rules.bzl

maint

Complexity & Impact

Average context complexity and engagement score of file changes over time. Higher complexity means more intricate changes; higher impact means broader effect on the codebase.

Top Contributors

Contributors ranked by total performance (ETV) from analyzed commits.

#
1	Jakob Degen881 commits	78.1	13.5	58.6	6.1
2	Chris Tolliday317 commits	46.8	13.6	27.1	6
3	Chenhao Zuo441 commits	32.1	15	15.7	1.4
4	Ian Childs579 commits	28.2	10.3	14.8	3.1
5	Chris Hopman169 commits	28.2	13.4	13	1.7
6	Will Li271 commits	23.8	6.7	14.4	2.7
7	Ben Carr160 commits	12	2	9.7	0.4
8	Ruslan Latypov58 commits	11.9	3.4	1.6	6.9
9	Jeremy Braun106 commits	11.4	4.1	5.8	1.4
10	David Tolnay187 commits	9.6	1.1	7.4	1.2
11	Joshua Selbo132 commits	9.2	0.8	8.2	0.3
12	Michael Podtserkovskii185 commits	9	3.1	5.1	0.8
13	Iveta Jurčíková93 commits	8	1.9	5.5	0.6
14	Scott Cao147 commits	7.4	3.2	3	1.2
15	Rajneesh Lakkundi132 commits	6.9	4.2	2.3	0.4
16	Andrew Zhang72 commits	6.6	2	3.6	1
17	Navid Qaragozlou140 commits	6.5	2.2	3.1	1.2
18	Thomas Orozco71 commits	6.1	3.2	2.2	0.7
19	Cameron Pickett58 commits	5.3	0.6	3.4	1.4
20	A aviad40 commits	5.3	1	3.9	0.4
21	N navidq5 commits	5.2	5.1	0.1	0
22	Alexey Kozhevnikov85 commits	5.1	1.3	3.4	0.5
23	Richard Howell161 commits	4.9	1.9	1.9	1.2
24	Milen Dzhumerov144 commits	4.5	2.1	1.6	0.7
25	Nivaldo Bondança28 commits	4.3	0.1	4.2	0
26	Wilfred Hughes81 commits	4.3	0.8	1.3	2.2
27	Jiawei Lü40 commits	3.8	2.2	1.5	0.1
28	Yury Samkevich100 commits	3.6	1.1	1.7	0.9
29	Nuri Amari72 commits	3.6	1.7	1.4	0.5
30	J jadel14 commits	3.2	0	3.1	0.1
31	Daniel Gorin100 commits	3.1	0.5	2	0.6
32	J junliqin16 commits	3.1	2.7	0.3	0
33	Nikita Patskov119 commits	2.8	1	1.3	0.6
34	Loren Arthur41 commits	2.8	2.1	0.6	0.1
35	Adolfo Santos10 commits	2.4	1.6	0.8	0
36	SiaoJie Cai50 commits	2.4	1.2	0.8	0.4
37	Michał Muskała71 commits	2.4	0.2	2.1	0.1
38	Ignacio Guridi44 commits	2.3	0.7	1.5	0.1
39	Itamar Oren24 commits	2.3	0.2	0.1	2.1
40	Aishwarya Sivaraman33 commits	2.3	0.9	1.1	0.3
41	Omkar Yadav23 commits	2.3	1.4	0.3	0.6
42	generatedunixname8900200528756416 commits	2.2	0	2.2	0
43	Brian Vincent18 commits	2.1	1.6	0.2	0.3
44	Andrew Gallagher54 commits	1.9	1	0.2	0.7
45	Andreas Löscher42 commits	1.8	0.6	0.6	0.6
46	Xin Cheng Shen65 commits	1.8	0.8	0.4	0.6
47	Ron Mordechai28 commits	1.8	1.2	0.4	0.2
48	Tom Davies22 commits	1.8	0.1	0.6	1
49	Christy Lee-Eusman65 commits	1.8	0.5	0.5	0.8
50	Ben Blackburne42 commits	1.7	1.1	0.4	0.3
51	Michael Lee11 commits	1.7	0.6	1.1	0.1
52	L leonming11 commits	1.7	0.8	0.9	0
53	G generatedunixname8900200523235742 commits	1.7	0	1.1	0.5
54	Ezgi Çiçek47 commits	1.6	0.6	0.7	0.3
55	Cj Longoria9 commits	1.5	0	1.5	0
56	M mendoncakeegan4 commits	1.4	0	1.4	0
57	Matt Payne10 commits	1.4	0.3	1	0.1
58	Rex Zhang2 commits	1.3	0.4	0.8	0
59	Jack Chistyakov32 commits	1.2	0.1	0.8	0.3
60	Ben Mehlow18 commits	1.2	0.5	0.7	0.1
61	Dustin Shahidehpour49 commits	1.2	0.6	0.5	0.1
62	S sergeirybalkin10 commits	1.2	0.2	1	0.1
63	Simon Krueger49 commits	1.2	0.3	0.8	0.1
64	Davis Rollman43 commits	1.1	0.6	0.3	0.2
65	J jonjanzen12 commits	1.1	0.3	0.8	0
66	Z zsol35 commits	1.1	0.5	0.4	0.2
67	E ericgriffith4 commits	1	0.2	0.3	0.5
68	Nhat Minh Le41 commits	1	0.7	0.2	0.1
69	C crgomez8 commits	1	0.4	0.4	0.2
70	Chatura Atapattu39 commits	1	0.5	0.3	0.2
71	G gurayah13 commits	0.9	0.7	0.3	0
72	Gerrit Goossen29 commits	0.9	0.4	0.3	0.2
73	C cuev12 commits	0.8	0.3	0.5	0
74	K kambati13 commits	0.8	0.6	0.1	0.2
75	A alessandrolipa11 commits	0.8	0.6	0.2	0
76	D diliopoulos13 commits	0.8	0	0.7	0
77	Sean Vong-Karlage22 commits	0.8	0.4	0.2	0.1
78	Cédric Barreteau12 commits	0.7	0.1	0.5	0.1
79	D davidrichey14 commits	0.7	0.3	0.2	0.1
80	Z zhuhan16 commits	0.7	0.2	0.2	0.3
81	H harlen6 commits	0.7	0.4	0.2	0.1
82	Conner Nilsen23 commits	0.7	0.1	0.4	0.1
83	F fmzakari5 commits	0.6	0.5	0.1	0.1
84	Kasra Ghodsi16 commits	0.6	0.1	0.1	0.5
85	D deanwsmith1 commits	0.6	0.3	0.3	0
86	C charlieevans6 commits	0.6	0.4	0.2	0.1
87	Zhaopu Wang14 commits	0.6	0.2	0.1	0.3
88	Andrew Krieger19 commits	0.6	0.1	0.4	0.1
89	Shoaib Meenai22 commits	0.6	0.3	0.2	0.1
90	C cosminc13 commits	0.6	0.3	0.2	0.1
91	P pbergen24 commits	0.6	0.2	0.4	0
92	O oessam3 commits	0.6	0.2	0	0.4
93	A aseipp17 commits	0.6	0.4	0.1	0.1
94	J jdelliot3 commits	0.5	0	0.2	0.4
95	M martinli13 commits	0.5	0.1	0.1	0.4
96	J jrodal9 commits	0.5	0.4	0.1	0.1
97	V vmagro3 commits	0.5	0.3	0.2	0
98	S scramsby9 commits	0.5	0.1	0.3	0.1
99	G generatedunixname49983612156 commits	0.5	0	0.5	0
100	Z zsol.zsol2 commits	0.5	0.4	0.1	0
101	G gkm3 commits	0.5	0.4	0.1	0
102	A amrdef26 commits	0.5	0.1	0.4	0
103	J jsgf7 commits	0.5	0.3	0.2	0
104	C ctolliday6 commits	0.5	0.1	0.4	0
105	V vididvidid1 commits	0.5	0	0.2	0.3
106	S shaynefletcher6 commits	0.5	0	0.1	0.4
107	Neil Mitchell27 commits	0.5	0.1	0.4	0
108	R rone6 commits	0.5	0.2	0.2	0.1
109	F facebook-github-bot6 commits	0.4	0	0.4	0
110	T tgli6 commits	0.4	0	0	0.4
111	Z zturner10 commits	0.4	0.3	0.1	0.1
112	B bgs16 commits	0.4	0	0.2	0.2
113	B bowiechen1 commits	0.4	0	0.4	0
114	Jason Fried5 commits	0.4	0.3	0	0.1
115	Rishi Arora24 commits	0.4	0.1	0.2	0.1
116	L loganshu1 commits	0.4	0	0.4	0
117	W web3 commits	0.4	0	0	0.3
118	J jingbo5 commits	0.4	0.2	0.1	0.1
119	D dongyansu6 commits	0.4	0.3	0.1	0
120	J jicee133 commits	0.4	0.3	0	0.1
121	B braidn2 commits	0.4	0.2	0.2	0
122	J johnnysouza9 commits	0.4	0	0.4	0
123	H himan3 commits	0.4	0.3	0.1	0
124	H huh4 commits	0.3	0	0.2	0.1
125	D derekavery5 commits	0.3	0.2	0.1	0
126	Sam Goldman2 commits	0.3	0.3	0	0
127	Z zwei1 commits	0.3	0	0.3	0
128	P poshannessy2 commits	0.3	0	0	0.3
129	X xizheyin8 commits	0.3	0.1	0.2	0
130	B bskorobogaty4 commits	0.3	0.3	0	0
131	T terchrng9 commits	0.3	0.1	0.2	0
132	C catg14 commits	0.3	0.1	0.1	0.1
133	W wilsontran8 commits	0.3	0.3	0	0
134	M matthiasb5 commits	0.3	0.1	0	0.2
135	G gagamennoni9 commits	0.3	0.2	0.1	0
136	H helfper10 commits	0.3	0.2	0.1	0
137	Y ysuleiman13 commits	0.3	0.1	0.3	0
138	A alanzimm8 commits	0.3	0	0.2	0.1
139	J jchistyakov1 commits	0.3	0	0.3	0
140	M mwoodman2 commits	0.3	0.2	0.1	0
141	A arsentumanyan6 commits	0.3	0.2	0	0.1
142	I ivanbalaksha7 commits	0.3	0.1	0	0.2
143	R rainerd5 commits	0.3	0.2	0	0
144	M mavitale6 commits	0.3	0.1	0	0.2
145	J jldai6 commits	0.3	0.2	0	0.1
146	A agampe9 commits	0.3	0.2	0	0
147	T toyang9 commits	0.3	0.1	0	0.2
148	Vincent Lee13 commits	0.2	0.2	0	0
149	H hongx12 commits	0.2	0	0.1	0.1
150	T tianyuli9 commits	0.2	0.1	0	0.2
151	K kiuk5 commits	0.2	0.1	0	0.1
152	Richard Barnes8 commits	0.2	0.1	0.1	0
153	R romanp13 commits	0.2	0.1	0.2	0
154	Jia Chen13 commits	0.2	0.1	0.2	0
155	K kkolur6 commits	0.2	0	0.2	0
156	M miha4 commits	0.2	0.2	0	0
157	Alex Hornby10 commits	0.2	0	0.1	0.1
158	J junfengli10 commits	0.2	0.1	0	0.1
159	generatedunixname8934649194334934 commits	0.2	0.1	0.1	0
160	L lanza7 commits	0.2	0.1	0	0.1
161	C cnli1 commits	0.2	0	0.1	0.1
162	J jdonald3 commits	0.2	0.2	0	0
163	C callumryan5 commits	0.2	0.2	0.1	0
164	A asoshin1 commits	0.2	0.1	0.1	0
165	A alexlian27 commits	0.2	0	0.2	0
166	R rlips1 commits	0.2	0.2	0	0
167	N neon4 commits	0.2	0.2	0	0
168	S sayfutdinov7 commits	0.2	0.1	0	0.1
169	A akulg2 commits	0.2	0.1	0.1	0
170	D dvir1 commits	0.2	0	0	0.2
171	J jtrodriguez12 commits	0.2	0.1	0.1	0
172	T thomasdavid6 commits	0.2	0	0	0.2
173	R rkaczmarczyk2 commits	0.2	0.1	0.1	0.1
174	J jselbo2 commits	0.2	0	0.2	0
175	A andreas.herrmann1 commits	0.2	0.2	0	0
176	A abalocco1 commits	0.2	0.1	0.1	0
177	A aleivag3 commits	0.2	0	0	0.2
178	S sgarlapati96 commits	0.2	0	0.1	0.1
179	P pengjiang3 commits	0.2	0	0	0.2
180	C cesarvaldez5 commits	0.2	0.1	0	0.1
181	B bsuh6 commits	0.2	0	0.1	0.1
182	Y yuguo1 commits	0.2	0	0	0.1
183	G github+mmhat2 commits	0.2	0.2	0	0
184	H hvanderwijst2 commits	0.2	0.1	0	0.1
185	A akampmann1 commits	0.2	0	0	0.2
186	A athmasagar3 commits	0.2	0	0	0.1
187	B breynoso13 commits	0.2	0.1	0	0
188	Z zihej9 commits	0.2	0.1	0	0
189	A aklotz1 commits	0.2	0.2	0	0
190	G guo1 commits	0.1	0	0	0.1
191	Z zachdiemer1 commits	0.1	0.1	0	0
192	V vojta.tuma1 commits	0.1	0	0.1	0
193	H h2h2 commits	0.1	0	0	0.1
194	M markbridges4 commits	0.1	0.1	0	0
195	L lucian2 commits	0.1	0.1	0	0
196	D dcsommer1 commits	0.1	0	0.1	0
197	Y yxdai3 commits	0.1	0	0	0.1
198	S simonsc7 commits	0.1	0	0.1	0
199	C claudio.bley2 commits	0.1	0.1	0	0.1
200	T trzhao3 commits	0.1	0	0.1	0
201	F fabiomilano3 commits	0.1	0	0	0.1
202	I ievgenii4 commits	0.1	0.1	0	0
203	P potatosaladx1 commits	0.1	0.1	0	0
204	D duffywan2 commits	0.1	0	0.1	0
205	Jeff Bahr4 commits	0.1	0	0.1	0
206	J jtru2 commits	0.1	0.1	0	0
207	A aaupov2 commits	0.1	0	0	0.1
208	K kjo1 commits	0.1	0.1	0	0
209	M mgerlach1 commits	0.1	0	0.1	0
210	G generatedunixname8900200530701610 commits	0.1	0	0.1	0
211	D danydunk2 commits	0.1	0.1	0	0
212	R riggspc7 commits	0.1	0	0.1	0
213	D doronkaminer2 commits	0.1	0.1	0	0
214	Y yongzhu4 commits	0.1	0.1	0	0
215	B blom2 commits	0.1	0	0	0.1
216	C changb6 commits	0.1	0.1	0.1	0
217	D davidzilburg2 commits	0.1	0	0	0.1
218	S sdar2 commits	0.1	0	0	0.1
219	R rgulati1 commits	0.1	0	0.1	0
220	M mahmudurr3 commits	0.1	0.1	0	0
221	B bkelley1 commits	0.1	0	0	0.1
222	K kuki2 commits	0.1	0	0.1	0
223	L lisroach1 commits	0.1	0.1	0	0
224	J jainrahul66204 commits	0.1	0.1	0	0
225	P pelant2 commits	0.1	0.1	0	0
226	K kjwang3 commits	0.1	0.1	0	0
227	B ben.e.saunders3 commits	0.1	0.1	0	0
228	P pveeravelli3 commits	0.1	0.1	0	0
229	S suree4041 commits	0.1	0	0	0.1
230	A adityapa2 commits	0.1	0	0.1	0
231	C chakshu2 commits	0.1	0.1	0	0
232	X xes6 commits	0.1	0	0.1	0
233	C chaohong1 commits	0.1	0	0.1	0
234	N neilmelnyk1 commits	0.1	0	0	0.1
235	M mattsmith21 commits	0.1	0.1	0	0
236	S sergeyandreenko2 commits	0.1	0	0	0.1
237	M marub1 commits	0.1	0.1	0	0
238	C cssmith2 commits	0.1	0	0	0
239	A acantrowitz10 commits	0.1	0.1	0	0
240	generatedunixname5373914756396135 commits	0.1	0	0	0.1
241	A avaladez2 commits	0.1	0.1	0	0
242	D dongli125 commits	0.1	0	0.1	0
243	A asuarez2 commits	0.1	0	0.1	0
244	Z zijianxu1 commits	0.1	0.1	0	0
245	D directhex1 commits	0.1	0	0	0.1
246	Z zfarkas1 commits	0.1	0.1	0	0
247	K kaz1 commits	0.1	0.1	0	0
248	A akrieger1 commits	0.1	0	0.1	0
249	L longinoa5 commits	0.1	0	0	0
250	Z zchuck4 commits	0.1	0	0	0.1
251	I ivanh1 commits	0.1	0	0.1	0
252	C cswiedler2 commits	0.1	0	0	0
253	S simsun1 commits	0.1	0	0.1	0
254	N nateroy3 commits	0.1	0	0	0
255	G gmambro1 commits	0.1	0.1	0	0
256	Maggie Moss3 commits	0.1	0.1	0	0
257	S smarlow3 commits	0.1	0	0	0.1
258	R rhow2 commits	0.1	0	0	0.1
259	P parzefall3 commits	0.1	0	0	0.1
260	B benrogers4 commits	0.1	0.1	0	0
261	A adam2 commits	0.1	0.1	0	0
262	Q qunli2 commits	0.1	0	0.1	0
263	M mranieri1 commits	0.1	0	0	0
264	R realpassy2 commits	0.1	0	0	0
265	D danielrodriguez2 commits	0.1	0	0	0.1
266	H hverlind1 commits	0.1	0	0	0.1
267	Eric Rozell3 commits	0.1	0	0	0
268	R rbt5 commits	0.1	0	0.1	0
269	C conn.hindley1 commits	0.1	0	0	0.1
270	J jorlow2 commits	0.1	0	0	0
271	< <nil>0 commits	0.1	0	0	0
272	I ioanbudea5 commits	0.1	0	0.1	0
273	C cpepin1 commits	0.1	0	0	0.1
274	I iterpre1 commits	0.1	0	0	0.1
275	N nzthomas1 commits	0.1	0	0	0.1
276	I ianc5 commits	0.1	0	0.1	0
277	I iamirzhan4 commits	0.1	0	0.1	0
278	1 121314722+gameroman1 commits	0.1	0	0.1	0
279	U ucheuba2 commits	0.1	0	0	0
280	R rratmansky3 commits	0.1	0.1	0	0
281	A adamjernst2 commits	0.1	0	0	0
282	W wtetzner2 commits	0.1	0	0	0
283	S swolchok3 commits	0.1	0	0	0
284	T tonio96811 commits	0.1	0	0.1	0
285	A adu1 commits	0.1	0	0	0.1
286	D dbarsky1 commits	0.1	0	0.1	0
287	A allenwu3 commits	0.1	0	0	0
288	K ksalah1 commits	0.1	0	0	0
289	S simonsli1 commits	0.1	0	0.1	0
290	L lrhernandez2 commits	0.1	0	0	0
291	A andryak1 commits	0.1	0	0.1	0
292	C chadbramwell2 commits	0.1	0.1	0	0
293	S scott1 commits	0.1	0.1	0	0
294	1 105591323+nepomuk56651 commits	0.1	0	0.1	0
295	Devan Buggay5 commits	0.1	0.1	0	0
296	P pepeiborra5 commits	0.1	0	0	0
297	N nhawkes1 commits	0.1	0	0	0.1
298	W weibinma2 commits	0.1	0	0	0
299	J juliamolin3 commits	0.1	0	0	0
300	S scottcao2 commits	0.1	0	0	0.1
301	R rafaelauler1 commits	0.1	0	0	0.1
302	A agc.klotz1 commits	0.1	0	0	0.1
303	K kdv2 commits	0.1	0	0.1	0
304	C camroth1 commits	0.1	0	0.1	0
305	D dixu1 commits	0.1	0	0	0.1
306	F forrest.smith1 commits	0.1	0	0.1	0
307	E eliuriegas1 commits	0.1	0.1	0	0
308	R rohithprabakar4 commits	0.1	0.1	0	0
309	D dtolnay2 commits	0.1	0	0.1	0
310	M mpennella1 commits	0.1	0.1	0	0

File Hotspots

Beta

Files with the highest combination of change frequency and waste ratio. These are candidates for refactoring or closer review.

Developer Momentum

Beta

Cumulative contribution over time. Watch developers race as positions shift month by month.

Work Patterns

Beta

Commit activity distribution by hour and day of week across all contributors in this repository.

POST /v1/repositories/{repositoryId}/bug-attributions Content-Type: application/json Request: { "startTime": "2025-01-01T00:00:00Z", "endTime": "2025-12-31T23:59:59Z" } Response: { "totalBugsAttributed": 42, "selfFixRate": 35, "coverageRate": 78, "attributions": [ { "filePath": "src/lib/auth.ts", "symbol": "validateToken", "introducer": { "name": "Alice", "email": "alice@co.com", "commitSha": "abc123" }, "fixer": { "name": "Bob", "email": "bob@co.com", "commitSha": "def456" }, "fixedAt": "2025-06-15T10:30:00Z", "isSelfFix": false } ] }

POST /v1/organizations/{orgId}/investment-quality Content-Type: application/json Request: { "startTime": "2025-01-01T00:00:00Z", "endTime": "2025-12-31T23:59:59Z", "bucketSize": "BUCKET_SIZE_MONTH", "groupBy": ["repository_id" | "deliverer_email"] } Response: { "productivePct": 74, "maintenancePct": 18, "wastedPct": 8, "buckets": [ { "bucketStart": "2025-01-01T00:00:00Z", "productive": 4.2, "maintenance": 1.8, "wasted": 0.6 } ] }

Hash

Message

Author

Effort

7e09501

Clear PYTHON_GIL from env after interpreter init

Itamar Oren

waste

15feaf5

Include --target-universe in representative_config_flags

Eric Griffith

grow

7230c79

Add native cython_library and cython_static_extension rules

Jason Fried

grow

d35c4db

Extend stack trace on main test timeouts capability to Instrumentation tests

Omkar Yadav

grow

21b8012

Only generate shared library interfaces for prebuilt libraries in defined_only mode

Nuri Amari

waste

8720398

Move extra_attributes from java.bzl into rule declarations in java_rules.bzl

Ian Childs

maint

355cf42

Move extra_attributes from kotlin.bzl into rule declarations in kotlin_rules.bzl

Ian Childs

grow

1e0046e

Remove no-op -no-reflect flag from kotlinc

Ian Childs

–

5c09597

Remove always-true Python 2.6 version guard from prelude __test_main__.py

Kasra Ghodsi

maint

e5eb58b

Move extra_attributes from android.bzl into rule declarations in android_rules.bzl

Ian Childs

maint

Jakob Degen881 commits

78.1

13.5

58.6

6.1

Chris Tolliday317 commits

46.8

13.6

27.1

Chenhao Zuo441 commits

32.1

15.7

1.4

Ian Childs579 commits

28.2

10.3

14.8

3.1

Chris Hopman169 commits

28.2

13.4

1.7

Will Li271 commits

23.8

6.7

14.4

2.7

Ben Carr160 commits

9.7

0.4

Ruslan Latypov58 commits

11.9

3.4

1.6

6.9

Jeremy Braun106 commits

11.4

4.1

5.8

1.4

David Tolnay187 commits

9.6

1.1

7.4

1.2

Joshua Selbo132 commits

9.2

0.8

8.2

0.3

Michael Podtserkovskii185 commits

3.1

5.1

0.8

Iveta Jurčíková93 commits

1.9

5.5

0.6

Scott Cao147 commits

7.4

3.2

1.2

Rajneesh Lakkundi132 commits

6.9

4.2

2.3

0.4

Andrew Zhang72 commits

6.6

3.6

Navid Qaragozlou140 commits

6.5

2.2

3.1

1.2

Thomas Orozco71 commits

6.1

3.2

2.2

0.7

Cameron Pickett58 commits

5.3

0.6

3.4

1.4

aviad40 commits

5.3

3.9

0.4

navidq5 commits

5.2

5.1

0.1

Alexey Kozhevnikov85 commits

5.1

1.3

3.4

0.5

Richard Howell161 commits

4.9

1.9

1.2

Milen Dzhumerov144 commits

4.5

2.1

1.6

0.7

Nivaldo Bondança28 commits

4.3

0.1

4.2

Wilfred Hughes81 commits

4.3

0.8

1.3

2.2

Jiawei Lü40 commits

3.8

2.2

1.5

0.1

Yury Samkevich100 commits

3.6

1.1

1.7

0.9

Nuri Amari72 commits

3.6

1.7

1.4

0.5

jadel14 commits

3.2

3.1

0.1

Daniel Gorin100 commits

3.1

0.5

0.6

junliqin16 commits

3.1

2.7

0.3

Nikita Patskov119 commits

2.8

1.3

0.6

Loren Arthur41 commits

2.8

2.1

0.6

0.1

Adolfo Santos10 commits

2.4

1.6

0.8

SiaoJie Cai50 commits

2.4

1.2

0.8

0.4

Michał Muskała71 commits

2.4

0.2

2.1

0.1

Ignacio Guridi44 commits

2.3

0.7

1.5

0.1

Itamar Oren24 commits

2.3

0.2

0.1

2.1

Aishwarya Sivaraman33 commits

2.3

0.9

1.1

0.3

Omkar Yadav23 commits

2.3

1.4

0.3

0.6

generatedunixname8900200528756416 commits

2.2

Brian Vincent18 commits

2.1

1.6

0.2

0.3

Andrew Gallagher54 commits

1.9

0.2

0.7

Andreas Löscher42 commits

1.8

0.6

Xin Cheng Shen65 commits

1.8

0.8

0.4

0.6

Ron Mordechai28 commits

1.8

1.2

0.4

0.2

Tom Davies22 commits

1.8

0.1

0.6

Christy Lee-Eusman65 commits

1.8

0.5

0.8

Ben Blackburne42 commits

1.7

1.1

0.4

0.3

Michael Lee11 commits

1.7

0.6

1.1

0.1

leonming11 commits

1.7

0.8

0.9

generatedunixname8900200523235742 commits

1.7

1.1

0.5

Ezgi Çiçek47 commits

1.6

0.6

0.7

0.3

Cj Longoria9 commits

1.5

mendoncakeegan4 commits

1.4

Matt Payne10 commits

1.4

0.3

0.1

Rex Zhang2 commits

1.3

0.4

0.8

Jack Chistyakov32 commits

1.2

0.1

0.8

0.3

Ben Mehlow18 commits

1.2

0.5

0.7

0.1

Dustin Shahidehpour49 commits

1.2

0.6

0.5

0.1

sergeirybalkin10 commits

1.2

0.2

0.1

Simon Krueger49 commits

1.2

0.3

0.8

0.1

Davis Rollman43 commits

1.1

0.6

0.3

0.2

jonjanzen12 commits

1.1

0.3

0.8

zsol35 commits

1.1

0.5

0.4

0.2

ericgriffith4 commits

0.2

0.3

0.5

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0.7

0.2

0.1

crgomez8 commits

0.4

0.2

Chatura Atapattu39 commits

0.5

0.3

0.2

gurayah13 commits

0.9

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Gerrit Goossen29 commits

0.9

0.4

0.3

0.2

cuev12 commits

0.8

0.3

0.5

kambati13 commits

0.8

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alessandrolipa11 commits

0.8

0.6

0.2

diliopoulos13 commits

0.8

0.7

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0.8

0.4

0.2

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Cédric Barreteau12 commits

0.7

0.1

0.5

0.1

davidrichey14 commits

0.7

0.3

0.2

0.1

zhuhan16 commits

0.7

0.2

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harlen6 commits

0.7

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0.2

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Conner Nilsen23 commits

0.7

0.1

0.4

0.1

fmzakari5 commits

0.6

0.5

0.1

Kasra Ghodsi16 commits

0.6

0.1

0.5

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0.6

0.3

charlieevans6 commits

0.6

0.4

0.2

0.1

Zhaopu Wang14 commits

0.6

0.2

0.1

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Andrew Krieger19 commits

0.6

0.1

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0.1

Shoaib Meenai22 commits

0.6

0.3

0.2

0.1

cosminc13 commits

0.6

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pbergen24 commits

0.6

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oessam3 commits

0.6

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aseipp17 commits

0.6

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jdelliot3 commits

0.5

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martinli13 commits

0.5

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jrodal9 commits

0.5

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vmagro3 commits

0.5

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scramsby9 commits

0.5

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generatedunixname49983612156 commits

0.5

100

zsol.zsol2 commits

0.5

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gkm3 commits

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amrdef26 commits

0.5

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jsgf7 commits

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ctolliday6 commits

0.5

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vididvidid1 commits

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shaynefletcher6 commits

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Neil Mitchell27 commits

0.5

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rone6 commits

0.5

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facebook-github-bot6 commits

0.4

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tgli6 commits

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zturner10 commits

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bgs16 commits

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bowiechen1 commits

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Jason Fried5 commits

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loganshu1 commits

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derekavery5 commits

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Sam Goldman2 commits

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zwei1 commits

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poshannessy2 commits

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xizheyin8 commits

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terchrng9 commits

0.3

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catg14 commits

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wilsontran8 commits

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gagamennoni9 commits

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helfper10 commits

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ysuleiman13 commits

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alanzimm8 commits

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jchistyakov1 commits

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mwoodman2 commits

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toyang9 commits

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hongx12 commits

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kkolur6 commits

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rhow2 commits

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