A friendly reminder on checking customization when upgrading R, how refactoring may not be so tedious when using the Jarl utility, and honest takes on various code smells you can prevent in your next testing suite. Episode Links This week's curator: Batool Almarzouq - @batoolmm.bsky.social (Bluesky) & @batool664 (X/Twitter)The Lurking Dangers of the R Version UpdateRefactoring with Jarl: a coffee chat11 Test Smells That Make Your Tests Lie to YouEntire issue available at rweekly.org/2026-W24Supplement Resources{renv} - Project environments in R https://rstudio.github.io/renv/index.htmlrig - The R installation manager https://github.com/r-lib/rigSupporting the showUse the contact page at https://serve.podhome.fm/custompage/r-weekly-highlights/contact to send us your feedbackR-Weekly Highlights on the Podcastindex.org - You can send a boost into the show directly in the Podcast Index. First, top-up with Alby, and then head over to the R-Weekly Highlights podcast entry on the index.A new way to think about value: https://value4value.infoGet in touch with us on social mediaEric Nantz: @rpodcast@podcastindex.social (Mastodon), @rpodcast.bsky.social (BlueSky) and @theRcast (X/Twitter)Mike Thomas: @mike_thomas@fosstodon.org (Mastodon), @mike-thomas.bsky.social (BlueSky), and @mike_ketchbrook (X/Twitter) Music credits powered by OCRemixVamo alla Django - Final Fantasy 9 - AndyP, Dan Bryant, Fishy - https://ocremix.org/remix/OCR03579Gurgling Desert Pond - Final Fantasy 1 - blackguitar - https://ocremix.org/remix/OCR02555