Linux Dev Time – Episode 148
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In episode 148 of Linux Dev Time, the hosts dive deep into the challenges of dependency management, sparked by Filippo Valsorda's critique of GitHub's Dependabot. They debate whether automated dependency updates create more churn than value, especially in security contexts. While acknowledging the utility of staying up to date, they argue that Dependabot often turns thoughtful dependency updates into mindless tasks, encouraging blind merges without proper evaluation. The hosts advocate for a principled approach—using tools like GoVulnCheck and running tests against updated dependencies—rather than relying on bots to do the work. They explore cultural differences across ecosystems: Go’s conservative, minimal dependency culture versus JavaScript’s sprawling, package-heavy landscape, exemplified by the infamous LeftPad incident. The discussion also covers version pinning, lock files, and the importance of reproducible builds, with a strong consensus in favor of checking in lock files for both libraries and binaries to ensure consistency. The episode ends with a lighthearted tease about 'made up dependencies,' a growing trend in the dev community.
Automated dependency updates via tools like Dependabot can create unnecessary churn and mask real risks—evaluate updates manually before merging.
Use vulnerability scanners (e.g., GoVulnCheck, RustSec) in CI to determine if a security fix actually affects your code path before updating.
Check in lock files (e.g., Cargo.lock, package-lock.json) to ensure reproducible builds across environments and team members.
Pinning dependencies should be intentional and temporary—only for compliance, known bugs, or security approvals—not as a default avoidance tactic.
Language ecosystems vary widely: Go favors minimal dependencies and strong standard libraries; JavaScript relies heavily on third-party packages, requiring careful curation.
…and 3 more takeaways available in PodZeus
Introduction and Patreon Support
The hosts introduce the episode and thank Patreon supporters, emphasizing the benefits of ad-free, early access content.
The Problem with Dependabot: Churn Over Value
“Dependabot is a noise machine. It makes you feel like you're doing work, but you're actually discouraging more useful work.”
Better Alternatives: CI Scanning and Manual Review
“You should run the vulnerability checker in your CI and you should run your test suite against the latest version of your dependencies.”
Ecosystem Differences: Go vs. JavaScript vs. Rust
“The JavaScript community has reacted to that [LeftPad] probably, but it's still stuck with a language with nothing sensible available to you until you use some packages.”
Lock Files, Pinning, and Reproducible Builds
The hosts debate the role of lock files and version pinning, concluding that checking in lock files ensures consistency and reproducibility across environments.
“Dependabot is a noise machine. It makes you feel like you're doing work, but you're actually discouraging more useful work.”
“You should run the vulnerability checker in your CI and you should run your test suite against the latest version of your dependencies.”
“You should probably also check in your lock file even for libraries as well.”
Hosts
Dependabot
product
Go
other
Rust
other
JavaScript
other
Python
other
Filippo Valsorda
person
Cargo
product
Element Web
other
LeftPad
other
GoVulnCheck
product
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