HackerReposA FIELD GUIDE TO OPEN SOURCE
ProSponsor the shelf♧ 0
← Back to top all-time
bazelbuild
bazel
Java2015–2026
bazelbuild / bazel

bazel

a fast, scalable, multi-language and extensible build system

77Distinct people
93Mentions
0Explicit recommenders
26.1KGitHub stars
REPOSITORY AT A GLANCE

What to know before exploring

What it is

a fast, scalable, multi-language and extensible build system

GitHub

Where it is used

No documented product use was verified in the last source check.

What people are saying

No recommendation phrase was found in the indexed comments.

No classified warning is attached to this page. Read the discussions before treating silence as approval.

Also in these discussions

Mentioned in the same Hacker News threads. That is not proof they are substitutes.

This week on Hacker News

Nov 8–Nov 15 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/15/2026, 11:19:25 AM UTC.

No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.

Mentions over time

HN mentions by year93 dated mentions

Observed mentions: 2015-03-24 16:07:21 UTC to 2026-01-21 00:19:31 UTC.

0510152015-01-01 00:00:00 UTC to 2016-01-01 00:00:00 UTC (exclusive): 12 mentions; 4 submissions, 8 comments20152016-01-01 00:00:00 UTC to 2017-01-01 00:00:00 UTC (exclusive): 5 mentions; 0 submissions, 5 comments2017-01-01 00:00:00 UTC to 2018-01-01 00:00:00 UTC (exclusive): 2 mentions; 0 submissions, 2 comments2018-01-01 00:00:00 UTC to 2019-01-01 00:00:00 UTC (exclusive): 9 mentions; 0 submissions, 9 comments2019-01-01 00:00:00 UTC to 2020-01-01 00:00:00 UTC (exclusive): 13 mentions; 1 submissions, 12 comments2020-01-01 00:00:00 UTC to 2021-01-01 00:00:00 UTC (exclusive): 12 mentions; 0 submissions, 12 comments20202021-01-01 00:00:00 UTC to 2022-01-01 00:00:00 UTC (exclusive): 5 mentions; 1 submissions, 4 comments2022-01-01 00:00:00 UTC to 2023-01-01 00:00:00 UTC (exclusive): 12 mentions; 1 submissions, 11 comments2023-01-01 00:00:00 UTC to 2024-01-01 00:00:00 UTC (exclusive): 10 mentions; 1 submissions, 9 comments2024-01-01 00:00:00 UTC to 2025-01-01 00:00:00 UTC (exclusive): 6 mentions; 1 submissions, 5 comments2025-01-01 00:00:00 UTC to 2026-01-01 00:00:00 UTC (exclusive): 6 mentions; 1 submissions, 5 comments2026-01-01 00:00:00 UTC to 2027-01-01 00:00:00 UTC (exclusive): 1 mentions; 1 submissions, 0 comments. Incomplete calendar period.2026*

* An incomplete calendar period is marked with an outlined bar. Its count is not directly comparable with a full period.

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

View mention counts and date ranges
UTC ranges include their start and exclude their end. Select a period to filter the source evidence.
PeriodStart (UTC)End (exclusive, UTC)MentionsSubmissionsComments
20152015-01-01 00:00:00 UTC2016-01-01 00:00:00 UTC1248
20162016-01-01 00:00:00 UTC2017-01-01 00:00:00 UTC505
20172017-01-01 00:00:00 UTC2018-01-01 00:00:00 UTC202
20182018-01-01 00:00:00 UTC2019-01-01 00:00:00 UTC909
20192019-01-01 00:00:00 UTC2020-01-01 00:00:00 UTC13112
20202020-01-01 00:00:00 UTC2021-01-01 00:00:00 UTC12012
20212021-01-01 00:00:00 UTC2022-01-01 00:00:00 UTC514
20222022-01-01 00:00:00 UTC2023-01-01 00:00:00 UTC12111
20232023-01-01 00:00:00 UTC2024-01-01 00:00:00 UTC1019
20242024-01-01 00:00:00 UTC2025-01-01 00:00:00 UTC615
20252025-01-01 00:00:00 UTC2026-01-01 00:00:00 UTC615
2026 (partial)2026-01-01 00:00:00 UTC2027-01-01 00:00:00 UTC110

What Hacker News says

13 sources
In my experience this is only true for C/C++ (with a decent amount of work to setup CROSSTOOL properly). As soon as you start to get into Python, and Python<->C++ interop, it becomes very leaky. I heard that Google has some tools internally that build the Python interpreter with Bazel and use that in order to guarantee hermeticity, but that doesn't seem to be possible with public tooling (at least not without some major hacks, for example https://github.com/bazelbuild/bazel/issues/4286 ) It would be interesting to see how Google manages languages such as Python at scale (and other languages that have similarly leaky package management).
In An introduction to deterministic builds with C/C++
I'd say the main the challenge that both Bazel and Buck have to face in the C++ land is that it's still too much work to migrate an existing cmake/autotools project to them. One nice project that tries to tackle that is https://github.com/bazelbuild/rules_foreign_cc. But yes, there are minor things that make migration from Bazel to Buck or vice versa not as smooth as it could be, and I'm confident those will be fixed. To me the biggest added value of Bazel is the remote (build and test) execution (which will get a nice performance boost from https://github.com/bazelbuild/bazel/issues/6862 in Bazel 0.25; also mentioned in [3]). (Your [3] doesn't compare Bazel and Buck, only Bazel with remote caching and without it, so it's not clear from it that Buck leverages caches better than Bazel). And one nit, Bazel doesn't allow you to download anyt
Read the rest
hing in the loading, analysis, or execution phases ("the BUILD files"), those are completely hermetic, sandboxed, and reproducible (when compilers are). The package manager integrations happen when resolving external repositories ("the WORKSPACE file"), where non-hermetic behavior is allowed and is used e.g. to autoconfigure C++ toolchain, or download npm packages.
In Buck: A high-performance build tool
> What's your take on Bazel? Here a couple key points: - Buck and Bazel are very similar. - Buck currently models C++ projects better [1]. - Buck leverages remote caches currently better than Bazel [3] - Bazel is very easy to install - Bazels "toolchains" make it very easy to onboard newcomers (to any project and language) but also ensure the build will run as expected. - Bazel is less opinionated and more extensible than Buck. In fact Bazel is so powerful that you can have Buildfiles that download a package manager and use it to resolve more dependencies. This is great to get things off the ground, but makes things less composable because the package manager won't see the whole dependency graph. As a result you might get version conflicts somewhere down the line. To summarize: I think having a very opinionated build-system is easier to
Read the rest
reason and scales usually better. Communities with very opinionated packaging and build-systems are proving this by having orders of magnitude more packages that eg. the highly fragmented C++ community where configuration is prefered over convention. > Have you considered offering support in Bazel for your package manager? Yes we did. As soon as this feature [1] is implemented we will have a 1:1 mapping for C++ Buck Projects and Bazel. Then after a small (automated) refactoring of our Buckaroo packages, you should be able to build any package from the Buckaroo ecosystem with either Buck or Bazel. Btw. The cppslack community is attempting to create a feature matrix of various build-systems here [2] [1] https://github.com/bazelbuild/bazel/issues/7568 [2] https://docs.google.com/document/d/1y5ZD8ETyGtxCmtT9dIMDTnWw... [3] https://github.com/bazelbuild/bazel/issues/7664
In Buck: A high-performance build tool
Overall Buck and Bazel are quite similar as they are both converging to Starlark DSL. However there are still some differences: Buck is much more opinionated than Bazel. Buck models slightly better C++ projects[1] and currently it's remote cache is more efficient[2]. Bazel is more extensible and offers also remote execution. Bazel has a bigger community and it's roadmap is public. There has been more than 350 C++ [4] libraries been ported to Buck for the Buckaroo Package Manager[3]. There are also technical details that manifest in some odd ways but are not significant. There is a nice paper by Simon Peyton Jones (creator of haskell) and others that goes into the design details [5] [1] https://github.com/bazelbuild/bazel/issues/7568 [2] https://github.com/bazelbuild/bazel/issues/7664 [3] https://github.com/LoopPerfect/buckaroo [4] https:/
Read the rest
In Buck: A high-performance build tool

MAKE YOURSELF AT HOME

A few shortcuts

/
Search the collection
?
Open this guide
Esc
Close dialogs and navigation

Your saved repositories and interests stay in this browser.