@andrherr
github.com/aherrmann
Joined August 2022
  • Tweets35
  • Following10
  • Followers19
2Media
Andreas Herrmann retweeted
Tweag by Modus Create
@tweagio19 Dec 2025
Building container images without Docker sounds like a party trick — until you see why it matters. Smaller images, faster builds, better caching. In this new blog post @malt3 shares what he learned while developing rules_img. tweag.io/blog/2025-12-18-rul…

Announcing rules_img: a faster path to container images in Bazel

rules_img is a Bazel ruleset for building and publishing OCI images that feel native to Bazel by treating images as metadata first and moving bytes only at the edges.

tweag.io
2
5
434
Andreas Herrmann retweeted
Tweag by Modus Create
@tweagio16 Oct 2025
Join Andreas Herrmann for a live talk at #BazelCon on the challenges that we faced while creating rules_haskell to build Haskell with Bazel, and how Buck2’s novel features allowed us to create more efficient Haskell build rules for Buck2. 💪 Learn more: hubs.ly/Q03NPzD_0
1
2
419
Andreas Herrmann retweeted
Tweag by Modus Create
@tweagio11 Jul 2025
Publishing crates from a #Rust workspace just got easier, thanks to the newly stabilized workspace-publishing feature that we contributed last year. Here’s how it works — and how you can use it now (blog post by Joe Neeman): tweag.io/blog/2025-07-10-car…

Publish all your crates everywhere all at once

A new multi-crate packaging feature for Cargo

tweag.io
3
5
690
Andreas Herrmann retweeted
Tweag by Modus Create
@tweagio12 Feb 2025
And now! Even if you *weren't* at #FOSDEM, you can watch our talks online. Enjoy Johan Herland on FawltyDeps hubs.ly/Q036ngJj0 Johan Herland on Debug Fission hubs.ly/Q036nmxS0 Claudio Bley on Remote Execution with Buck2 and Nix hubs.ly/Q036nlpV0

FOSDEM 2025 - FawltyDeps: Finding undeclared and unused dependencies in your notebooks and projects

archive.fosdem.org
1
5
269
Andreas Herrmann retweeted
Tweag by Modus Create
@tweagio19 Dec 2024
Remember when starting your React dev server meant time for a coffee? In our latest blog post, Edian Comachio migrates a project from Create React App to Vite. Build times dropped by 70%. Edian tells you all about it and why he believes Vite is the future of React dev tooling.
1
1
6
667
Andreas Herrmann retweeted
Tweag by Modus Create
@tweagio18 Dec 2024
Our Scalable Build Group has just published issue 26 of their build //newsletter. Subscribe for updates on the latest developments in the build system space. hubs.ly/Q02_Wykv0 #opensource #software #engineering

build //newletter

Stay up-to-date on developments around build systems that focus on correct, efficient, and reliable builds and scale to large, polyglot projects.

build.news
1
1
347
Andreas Herrmann retweeted
Tweag by Modus Create
@tweagio17 Oct 2024
In our new blog post, @malt3 introduces rules_gcs: A collaboration with @IMAX which offers a drop-in replacement for Bazel's http_file and http_archive using Google Cloud Storage URLs, with support for lazy fetching, private buckets and Bazel's downloader. hubs.ly/Q02TNjkv0

Introducing rules_gcs

Efficient Google Cloud Storage Integration for Bazel

tweag.io
1
2
4
491
Andreas Herrmann retweeted
Tweag by Modus Create
@tweagio12 Sep 2024
Our Scalable Build Group has just published issue 23 of their build //newsletter. Subscribe for updates on the latest developments in the build system space, including our presentation at the Haskell Implementors’ Workshop in Milan. hubs.ly/Q02PHtL20 #opensource #haskell

build //newletter

Stay up-to-date on developments around build systems that focus on correct, efficient, and reliable builds and scale to large, polyglot projects.

build.news
1
2
317
Andreas Herrmann retweeted
Tweag by Modus Create
@tweagio10 Jun 2024
We're excited to host another Bazel Hour on June 26th! Join @nixos_org & @bazelbuild expert @andrherr for an informal session to learn what Nix + Bazel is and how you can use it. See you there! Register today 👉 hubs.ly/Q02zVvNz0 #engineering #opensource #bazel #nix
4
4
898
Andreas Herrmann retweeted
Tweag by Modus Create
@tweagio5 Jun 2024
We're proud sponsors of @ZuriHac, which kicks off this weekend. Be sure to join our software expert @andrherr to learn about building Haskell with Bazel. Looking forward to seeing you there! Register 👉 hubs.ly/Q02zhSbk0 #haskell #opensource @HaskellOrg @bazelbuild
3
7
678
Andreas Herrmann retweeted
Bazel@bazelbuild29 Apr 2024
📢BazelCon 2024 is happening Oct 14-15 at the Computer History Museum, Mountain View! #bazelcon2024 Thanks to our awesome community partners from @aspect_build ,@buildbuddy,@EngFlow,@Gradle, @Salesforce, & @tweagio for making this happen. Registration & CfP coming soon!
13
1
46
3,857
Andreas Herrmann retweeted
Tweag by Modus Create
@tweagio12 Apr 2024
Our Scalable Build Group has just published issue 18 of their build //newsletter hubs.ly/Q02sFZH90

build //newletter

Stay up-to-date on developments around build systems that focus on correct, efficient, and reliable builds and scale to large, polyglot projects.

build.news
1
1
520
Andreas Herrmann retweeted
Tweag by Modus Create
@tweagio29 Feb 2024
Achieving Bazel remote execution with Nix + Bazel has been a long standing issue. In their new blog post, Konstantinos Sideris and Guillaume Maudoux show that it can be done with a bit of scaffolding. hubs.ly/Q02mHm340

Bazel remote execution with rules_nixpkgs

Creating infrastructure for supporting Bazel remote execution with rules_nixpkgs

tweag.io
2
1
5
887
Andreas Herrmann retweeted
Tweag by Modus Create
@tweagio22 Dec 2023
rules_haskell v0.18 is out, supporting GHC 9.6, many cleanups and a few bug fixes. 📷 github.com/tweag/rules_haske…

Release v0.18 · tweag/rules_haskell

Using bzlmod with Bazel 6 Enable with common --enable_bzlmod in .bazelrc. Add to your MODULE.bazel file: bazel_dep(name = "rules_haskell", version = "0.18") Using WORKSPACE lo...

github.com
1
7
746
Andreas Herrmann retweeted
Tweag by Modus Create
@tweagio9 Nov 2023
In our latest blog post, @jherland and Mark Karpov share a war story about integrating Testwell CTC++ from @verifysoft1 in Bazel rules. Both tools have rather different views of what a coverage tool should do, yet they found a solution. tweag.io/blog/2023-11-09-ctc…

Integrating Testwell CTC++ with Bazel

A Bazel war story of how we integrated a proprietary code coverage tool that does not play according to Bazel’s rules.

tweag.io
2
1
4
679
Meet me at the Iceland Build Meetup (engflow.com/buildCommunityEv…), where I'll be speaking about #Buck2 and #Bazel, and at #bazelcon (conf.bazel.build/), where I'll be speaking about migrating our Bazel extensions to bzlmod.
3
6
988
Andreas Herrmann retweeted
Tweag by Modus Create
@tweagio6 Oct 2023
Issue 12 of the "build //newsletter" is out, published by Tweag's Scalable Build Systems group. Featured: the next Bazel Hour, will be held on November 2nd from 11:30 AM - 12:45 PM EDT. Find the sign-up link inside. mailchi.mp/build/build-newsl…
2
4
604
I'm looking forward to be part of #GitKon this year. Thank you to @GitKraken for their support!
2
8
1,098
I'm attending @ASGConf today and tomorrow and will speak about #nix and #bazel tomorrow. Get in touch! cfp.all-systems-go.io/all-sy…

Fast, correct, reproducible builds with Nix + Bazel All Systems Go! 2023

The build system should get out of the way to let us focus on our tasks, not be distracted by slow or unreliable builds, get fast feedback on changes, and let us know what’s in the software we’re...

cfp.all-systems-go.io
2
5
525
Andreas Herrmann retweeted
Tweag by Modus Create
@tweagio12 Sep 2023
Issue 11 of the build //newsletter is out! Lots of goodies in here as usual, covering #bazel, #NixOS, #gradle, monorepos and more: mailchi.mp/build/build-newsl….
1
4
597
Load more