BazelCon 2021

Day 1

Nov 17

Title

Keynote - State of Bazel

Jeff Cox (he/him)

Jeff Cox, Engineering Director of Google’s software Build, Test, and Release functions, will open up BazelCon 2021 with the “State of Bazel”, Announcements, high level Bazel roadmap, and more. This keynote discussion about Bazel’s strategic direction is one that can’t be missed.

9 Minutes

Jeff Cox (he/him)

Senior Director, Engineering

Google

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Bazel Community Updates

Sven Tiffe (he/him), Joe Hicks (he/him)

Sven Tiffe, Engineering Manager for Bazel and Joe Hicks, Product Manager for Bazel, will share community updates, key initiatives, and more.

14 Minutes

Sven Tiffe (he/him)

Manager, Engineering

Google

Joe Hicks (he/him)

Product Manager

Google

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Implicit Bias Mitigation: Making the Unconscious Conscious

Lauren Thomas Ewing (she/her)

This talk reviews the concept of implicit bias and tactics for mitigating it both personally and professionally in the broader context of diversity, equity, inclusion, and belonging.

30 Minutes

Lauren Thomas Ewing (she/her)

HR Strategy Consultant

Google

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Hermetic Vignettes

Benjamin Peterson (he/him)

Stories about the meaning of "hermetic" and how to achieve it in the context of builds. A meditation on the aesthetic aspects of build reproducibility.

26 Minutes

Benjamin Peterson (he/him)

Software Engineer

EngFlow

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Embedded Platform Testing with Remote Execution

Austin Schuh (he/him)

Does your code target embedded systems with specialty hardware where it is hard to run Bazel? Do you want to run your tests on that hardware with Bazel? Come learn how we have been able to leverage Remote Execution to speed up and simplify our builds while testing on embedded hardware.

16 Minutes

Austin Schuh (he/him)

Principal Software Architect

Blue River Technology

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Break

20 Minutes

The Future of Language Specific Rules in Bazel

Ivo List (he/him)

At present the language specific rules (Java, C++, Android) are part of Bazel's binary and their unit tests are not exposed, which makes the changes to the rules in Bazel difficult, especially for the open source community. The Bazel team will reimplement those rules and their tests in Starlark and move them to their own repositories and because of this the contributions to the rules will become easier.

18 Minutes

Ivo List (he/him)

Software Engineer

Google

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Predicting Bazel Build Times Using Machine Learning

Muhammad Umar Nadeem (he/him), Sarah Raza (she/her)

In our presentation, we will be sharing a linear regression algorithm with feature crossing that predicts the CPU-time of a Bazel build. This model will allow developers to design code for efficient use of resources in advance of executing the build.

12 Minutes

Muhammad Umar Nadeem (he/him)

Computer Science Student

Stanford

Sarah Raza (she/her)

Computer Science Student

Stanford

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Resolving Twitter's 3rdparty/jvm with bazel-multiversion

Eugene Yokota (he/him)

In this talk, I will present bazel-multiversion, a CLI tool Build team at Twitter developed to provide multiversion support for 3rdparty/jvm libraries (like Kafka and Guava). I will also cover the motivation behind multiversioning as well as workarounds we had to do to overcome its limitations.

19 Minutes

Eugene Yokota (he/him)

Software Engineer

Twitter

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Bazelizing a Gigantic iOS App

Xiaoyi Shi (he/him)

Lessons learned from migrating millions LOC, a decade-old iOS App to Bazel.

18 Minutes

Xiaoyi Shi (he/him)

Senior Software Engineer

Tencent

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Break

30 Minutes

BUILD file generation - writing a Gazelle extension for rules_haskell

Andreas Herrmann (he/him)

10 Minutes

Andreas Herrmann (he/him)

Developer Experience Lead

Tweag

Driving a Language-Agnostic CI/CD Pipeline using Bazel

Dan Cohn (he/him)

10 Minutes

Dan Cohn (he/him)

Principal Applications Architect

Sabre

Parsing source code to automate a gradual Bazel migration

Eric Miller (he/him), Danny Wolf (he/him)

10 Minutes

Eric Miller (he/him)

Autonomy Infra Lead

Skydio

Danny Wolf (he/him)

Skydio

Utilize Bazel Cache for Integration Tests

Denys Kurylenko (he/him)

10 Minutes

Denys Kurylenko (he/him)

Software engineer

Fast

Automated protocol buffer rule generation with Gazelle

Paul Cody Johnston (he/him)

10 Minutes

Paul Cody Johnston (he/him)

Developer

Stack.Build

Scaling Bazel CI with Buildkite

Matt Mackay (he/him)

10 Minutes

Matt Mackay (he/him)

Senior Software Engineer

Aspect Development

Extending Gazelle to dynamic languages

Thulio Ferraz Assis

10 Minutes

Thulio Ferraz Assis

Senior Software Engineer

Aspect Development

Group Discussion

30 Minutes

Group Discussion

20 Minutes

bzlmod: Bazel's new external dependency system

Xudong Yang (he/him), Yun Peng (he/him)

10 Minutes

Xudong Yang (he/him)

Software Engineer

Google

Yun Peng (he/him)

Software Engineer

Google

Migrating Revolut-iOS to Bazel

Andrés Cecilia Luque

10 Minutes

Andrés Cecilia Luque

iOS Developer

Revolut

Group Discussion

50 Minutes

rules_spm: Using Swift Package Manager Dependencies In Bazel

Chuck Grindel (he/his)

10 Minutes

Chuck Grindel (he/his)

Founder, Chief Technology Officer

Code Without Fear

Group Discussion

40 Minutes

Day 2

Nov 18

Title

Join the party: How to Make your Impact as a Bazel Contributor

Cynthia Coan (she/her), Helen Altshuler (she/her)

How do you get started with your first Bazel Contribution? Developing on such a widely used system can be nerve-racking to newcomers, yet having more diverse ideas is how we succeed. Come learn a practical approach for how to start contributing to large projects such as Bazel, and how we as a community can improve this process to bring the best ideas forward.

14 Minutes

Cynthia Coan (she/her)

Senior Software Engineer

Stripe

Helen Altshuler (she/her)

Co-founder & CEO

EngFlow

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Build Custom Silicon with Bazel

Ethan Moon Mahintorabi (he/him)

Want to learn how design custom silicon with the same workflow you use to build software with Bazel? Come to this talk for an overview of how the https://github.com/hdl/bazel_rules_hdl repo allows you to do just that.

11 Minutes

Ethan Moon Mahintorabi (he/him)

Software Engineer

Google

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Starlark Debugger: Deep Dive

Paul Cody Johnston (he/him)

The Starlark debugger remains an under-appreciated and underused tool in the Bazel ecosystem. In this talk we'll do a deep dive on the debug architecture, how to run it, what works and what is not supported. The presentation will be largely demo-based in the context of the debug adapter protocol and VSCode.

17 Minutes

Paul Cody Johnston (he/him)

Developer

Stack.Build

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Bazel in the Cloud with GitHub Codespaces and Remote Execution

Siggi Simonarson (he/him)

Development environments are moving to the cloud and Bazel is perfectly positioned to ride this wave. In this talk, you'll learn how to configure Github Codespaces to take full advantage of Bazel's remote execution capabilities for blazing fast builds in the cloud.

17 Minutes

Siggi Simonarson (he/him)

Co-founder

BuildBuddy

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Docker to Bazel: Generating Client Libraries in 7 Languages for Google Cloud

Alexander Fenster (he/him)

A story of moving a client libraries generation process from using 7 different Docker images, one per language, to a single Bazel invocation.

12 Minutes

Alexander Fenster (he/him)

Software Engineer

Google

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Break

20 Minutes

Streamlining VMware's Open Source License Compliance Using Bazel

Daniel Machlab (he/his)

The complexities of identifying and tracking open-source software (OSS) to comply with license requirements adds friction to the development process and can result in product-release delays. At VMware, we solve this problem using Bazel to create an accurate bill of materials containing OSS and third-party packages during a build.

17 Minutes

Daniel Machlab (he/his)

Software Engineer

VMware

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Automated Migration to Bazel with Airin

Pavlo Stavytskyi (he/him)

Airin — is a framework for automated migration to Bazel. It consists of 2 primary components:Starlark Template Engine — a declarative, typesafe Starlark template engine and code generator.Migration component — a plugin to the build system of your project that automates migration process and generates corresponding Bazel scripts. Initially targets Gradle but not restricted with it.

13 Minutes

Pavlo Stavytskyi (he/him)

Senior Software Engineer

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Adding Cross Compilation Support to rules_haskell

Andreas Herrmann (he/him)

Bazel's platforms and toolchains provide built-in support for cross compilation, but setting it up in practice is often not as simple as passing a command-line flag and requires special consideration by the rule author. In this talk I will share what we learned while adding cross compilation support to rules_haskell and share what to look out for when adding cross compilation support to your rule set.

18 Minutes

Andreas Herrmann (he/him)

Developer Experience Lead

Tweag

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Eclipse and VS Code IDE Support for Java packages in Bazel

Peter Laird (he/him), Gunnar Wagenknecht (he/him)

Teams at Salesforce are building Java libraries, microservices, and a large monolith with Bazel. To support our developers, we have built Bazel integrations for Eclipse and VS Code in open source. During this session we will demo each integration and present the roadmap on each project.

20 Minutes

Peter Laird (he/him)

Principal Engineer

Salesforce

Gunnar Wagenknecht (he/him)

Salesforce

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Break

52 Minutes

Sabre's Journey to a Bazel Monorepo

Dan Cohn (he/him)

Meet link: https://meet.google.com/ydx-ppey-zwt

10 Minutes

Dan Cohn (he/him)

Principal Applications Architect

Sabre

Building Web Applications With Bazel

Greg Magolan

Meet link: https://meet.google.com/vkd-ttmh-hyo

10 Minutes

Greg Magolan

Co-founder

Aspect Development

Airbnb’s Bazel journey so far

Janusz Kudelka

Meet link: https://meet.google.com/ydx-ppey-zwt

10 Minutes

Janusz Kudelka

Staff Software Engineer

Airbnb

Migrating from NPM+TS+Webpack to Bazel

Vasilios Pantazopoulos (he/him)

Meet link: https://meet.google.com/vkd-ttmh-hyo

10 Minutes

Vasilios Pantazopoulos (he/him)

Productivity SWE

FullStory, Inc.

Migrating Twitter's Monorepo from Pants to Bazel - 2021

Yi Cheng (he/him)

Meet link: https://meet.google.com/ydx-ppey-zwt

10 Minutes

Yi Cheng (he/him)

Engineer

Twitter Inc

Group Discussion

Meet link: https://meet.google.com/vkd-ttmh-hyo

40 Minutes

Group Discussion

Meet link: https://meet.google.com/ydx-ppey-zwt

30 Minutes

Live Q&A with the Bazel Team

Meet link: https://meet.google.com/ssc-fihw-sci

60 Minutes

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