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 Update
• Refactoring with Jarl: a coffee chat
• 11 Test Smells That Make Your Tests Lie to You
• Entire issue available at rweekly.org/2026-W24

Supplement Resources

• {renv} - Project environments in R https://rstudio.github.io/renv/index.html
• rig - The R installation manager https://github.com/r-lib/rig

Supporting the show

• Use the contact page at https://serve.podhome.fm/custompage/r-weekly-highlights/contact to send us your feedback
• R-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.info
• Get in touch with us on social media
  • Eric 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 OCRemix

• Vamo alla Django - Final Fantasy 9 - AndyP, Dan Bryant, Fishy - https://ocremix.org/remix/OCR03579
• Gurgling Desert Pond - Final Fantasy 1 - blackguitar - https://ocremix.org/remix/OCR02555