Ken, That's not true, Positron is based on Electron 34 which supports macOS 11 just fine (as do all stable releases of Electron). The breakage comes from the Jupyter R kernel which ostensibly was intended to be backward compatible (with minos set to 10.12 which is ancient) so it looks like an oversight at build time more than an intention. That is not to say that reliance on such a long list of 3rd party code doesn't have problems in that regard, so I wouldn’t hold my breath (Electron did announce the intent to break it in the future releases).
Cheers, Simon > On 17/07/2025, at 16:01, Ken Beath <k...@kjbeath.id.au> wrote: > > The problem is that it uses the Electron framework, and it isn’t supported on > earlier versions of MacOS. > > Ken > >> On 17 Jul 2025, at 1:15 pm, Simon Urbanek <simon.urba...@r-project.org> >> wrote: >> >> Kevin, >> >> You may have missed one key part: large fraction of Intel Mac users cannot >> upgrade, because Apple removed many Intel Mac drivers from more recent macOS >> versions, so many R users have no choice - they cannot upgrade even if they >> wanted to - which why we see so many R users using macOS < 13. The question >> of EOL support becomes irrelevant if it is the only way to keep a perfectly >> good machine running. That’s why it is important for R to keep supporting >> macOS 11 and higher at least for the x86_64 builds (arm64 is fine so far, >> Apple is currently supporting all Apple Silicon Macs in the latest macOS). >> One could say that Apple is becoming the victim of their own hardware >> quality :). >> >> Cheers, >> Simon >> >> >>> On 17/07/2025, at 14:03, Kevin Ushey <kevinus...@gmail.com> wrote: >>> >>> Big Sur is no longer supported by Apple (it reached EOL in September 2023) >>> so you're unfortunately likely to continue to run into these sorts of >>> issues if you cannot upgrade your OS. >>> >>> On Wed, Jul 16, 2025, 6:07 PM José Carlos Guerrero Antúnez < >>> jcgantu...@gmail.com> wrote: >>> >>>> Thanks Bill for the recommendation. >>>> I installed Positron but I got this message, it doesn't seem to connect >>>> with R. >>>> >>>> R 4.5.1 failed to start up (exit code -1) >>>> >>>> The kernel exited before a connection could be established >>>> dyld: Symbol not found: >>>> __ZTTNSt3__118basic_stringstreamIcNS_11char_traitsIcEENS_9allocatorIcEEEE >>>> Referenced from: >>>> >>>> /Applications/Positron.app/Contents/Resources/app/extensions/positron-r/resources/ark/ark >>>> Expected in: /usr/lib/libc++.1.dylib >>>> in >>>> >>>> /Applications/Positron.app/Contents/Resources/app/extensions/positron-r/resources/ark/ark >>>> >>>> El mié, 16 jul 2025 a las 7:14, <bill+rsig...@8pawexpress.com> escribió: >>>> >>>>> I’m neither a Posit/RStudio employee/dev nor do I use their IDEs atm, but >>>>> … while RStudio IDE requires MacOS 13+, the “next-gen” IDE from Posit is >>>>> Positron, and it allegedly depends only on MacOS 10.15+ with universal, >>>>> intel, and arm64 binaries. See https://positron.posit.co/download.html. >>>>> >>>>> I’ve played briefly with it, and while I’m an avid emacs/ess user (never >>>>> been much for RStudio IDE itself), the Positron experience is getting >>>> much >>>>> closer to what I hope for. There are discussions on migrating (keyboard >>>>> shortcuts, mental assumptions, etc) from RStudio IDE to reduce the >>>> change, >>>>> and I believe there are few things one can do in RStudio that are not >>>> also >>>>> feasible in Positron. >>>>> >>>>> Good luck, >>>>> Bill >>>>> >>>>> On 7/15/25 18:36, Simon Urbanek wrote: >>>>> >>>>> José, >>>>> >>>>> I agree that latest RStudio dropping support for a very large number of >>>> Macs is unfortunate. It may be worth raising it with Posit - we have very >>>> deliberately not increased the macOS version requirement of R binaries, >>>> because it would affect way too may R users based on the estimates from >>>> weblogs (as Intel Mac owners simply cannot upgrade). >>>>> >>>>> That said, in the meantime you can install any older R version as well - >>>> see >>>>> https://cran.r-project.org/bin/macosx/big-sur-x86_64/base/ >>>>> >>>>> to match the last working RStudio to see if it will work for your use >>>> case. >>>>> >>>>> Of course, for regular work you can switch to the Mac GUI which always >>>> supports the same macOS version as R, or any of the other GUI alternatives >>>> that don’t embed R. >>>>> >>>>> Cheers, >>>>> Simon >>>>> >>>>> >>>>> >>>>> >>>>> On 16/07/2025, at 02:37, José Carlos Guerrero Antúnez < >>>> jcgantu...@gmail.com> <jcgantu...@gmail.com> wrote: >>>>> >>>>> Thanks Kevin and Roy, >>>>> I work with two old Macs with the BigSur operating system (one at home >>>> and >>>>> one at school) and I can't upgrade, which prevents me from having the >>>>> newest version of RStudio because it doesn't meet the requirements. >>>>> I wanted to install the caretSDM package, on the Mac at home I had >>>> version >>>>> 4.3.3 and the package recommended me to use a newer version of R and I >>>>> upgraded to version 4.5.1. In the case of the faculty Mac I am using >>>>> version R.4.4.0 and I have no problem with the caretSDM package. >>>>> From my ignorance I dare to say that there is a package that is >>>> generating >>>>> the conflict with R version 4.5.1. >>>>> >>>>> Best regards, >>>>> >>>>> El mar, 15 jul 2025 a las 1:02, roy (<rollinfor...@gmail.com> < >>>> rollinfor...@gmail.com>) escribió: >>>>> >>>>> >>>>> Hi José >>>>> fwiw, I tried R 4.5.1 on my macmini (15.5, Intel) with an old version of >>>>> RStudio and received the same similar error you reported. When I updated >>>>> to the latest RStudio (Version 2025.05.1+513 (2025.05.1+513)) my quick >>>> test >>>>> (matrix multiplication) worked without error. >>>>> >>>>> cheers, roy >>>>> >>>>> >>>>> On Mon, Jul 14, 2025 at 8:42 PM Kevin Ushey <kevinus...@gmail.com> < >>>> kevinus...@gmail.com> wrote: >>>>> >>>>> >>>>> Did you already try installing the latest available release of RStudio? >>>> In >>>>> general, R and RStudio should be upgraded together. >>>>> >>>>> If you still have problems with the latest release of RStudio, you should >>>>> file a big report at https://github.com/rstudio/rstudio/issues. >>>>> >>>>> On Mon, Jul 14, 2025, 6:54 PM José Carlos Guerrero Antúnez < >>>> jcgantu...@gmail.com> wrote: >>>>> >>>>> >>>>> Thank you Jeff for your suggestions, I will keep them in mind. >>>>> >>>>> >>>>> >>>>> >>>>> El lun, 14 jul 2025 a las 22:45, Jeff Newmiller (< >>>>> >>>>> jdnew...@dcn.davis.ca.us >>>>> >>>>> ) >>>>> >>>>> escribió: >>>>> >>>>> >>>>> R is maintained by the volunteer R Core group, while RStudio is >>>>> >>>>> maintained >>>>> >>>>> by Posit. You may get more thorough help with RStudio if you ask at >>>>> >>>>> the >>>>> >>>>> Posit forum. >>>>> >>>>> That said, as a rule the RStudio team has to play "catch-up" when R is >>>>> upgraded by R Core. You may be running an older version of RStudio >>>>> >>>>> that >>>>> >>>>> does not know how to deal with R 4.5.1. Check for a newer version of >>>>> RStudio, or try uninstalling R 4.5.1 and re-installing an older >>>>> >>>>> version >>>>> >>>>> R... or try using R with a different text editor (there are a lot of >>>>> >>>>> them). >>>>> >>>>> RStudio is a fine option, but it is not the only way to use R. >>>>> >>>>> On July 14, 2025 5:54:47 PM PDT, "José Carlos Guerrero Antúnez" < >>>> jcgantu...@gmail.com> wrote: >>>>> >>>>> Hi, >>>>> >>>>> I am not sure if this is the right forum for this query, and I >>>>> >>>>> apologize >>>>> >>>>> in >>>>> >>>>> advance. >>>>> I recently upgraded to version R 4.5.1, and I use the RStudio >>>>> >>>>> program. I >>>>> >>>>> can open it without any problem, but I am experiencing crashes >>>>> >>>>> whenever >>>>> >>>>> I >>>>> >>>>> perform any action in the program. I receive the following message: >>>>> "R Session Aborted. R encountered a fatal error. The session was >>>>> terminated. Start New Session." >>>>> >>>>> Could you please recommend what I should do? >>>>> >>>>> Thank you very much >>>>> >>>>> [[alternative HTML version deleted]] >>>>> >>>>> _______________________________________________ >>>>> R-SIG-Mac mailing listR-SIG-Mac@r-project.orghttps:// >>>> stat.ethz.ch/mailman/listinfo/r-sig-mac >>>>> >>>>> -- >>>>> Sent from my phone. Please excuse my brevity. >>>>> >>>>> >>>>> -- >>>>> José Carlos Guerrero >>>>> >>>>> [[alternative HTML version deleted]] >>>>> >>>>> _______________________________________________ >>>>> R-SIG-Mac mailing listR-SIG-Mac@r-project.orghttps:// >>>> stat.ethz.ch/mailman/listinfo/r-sig-mac >>>>> >>>>> [[alternative HTML version deleted]] >>>>> >>>>> _______________________________________________ >>>>> R-SIG-Mac mailing listR-SIG-Mac@r-project.orghttps:// >>>> stat.ethz.ch/mailman/listinfo/r-sig-mac >>>>> >>>>> -- >>>>> José Carlos Guerrero >>>>> >>>>> [[alternative HTML version deleted]] >>>>> >>>>> _______________________________________________ >>>>> R-SIG-Mac mailing listR-SIG-Mac@r-project.orghttps:// >>>> stat.ethz.ch/mailman/listinfo/r-sig-mac >>>>> >>>>> _______________________________________________ >>>>> R-SIG-Mac mailing listR-SIG-Mac@r-project.orghttps:// >>>> stat.ethz.ch/mailman/listinfo/r-sig-mac >>>>> >>>>> ​ >>>>> >>>> >>>> >>>> -- >>>> José Carlos Guerrero >>>> >>>> [[alternative HTML version deleted]] >>>> >>>> _______________________________________________ >>>> R-SIG-Mac mailing list >>>> R-SIG-Mac@r-project.org >>>> https://stat.ethz.ch/mailman/listinfo/r-sig-mac >>>> >>> >>> [[alternative HTML version deleted]] >>> >>> _______________________________________________ >>> R-SIG-Mac mailing list >>> R-SIG-Mac@r-project.org >>> https://stat.ethz.ch/mailman/listinfo/r-sig-mac >>> >> >> _______________________________________________ >> R-SIG-Mac mailing list >> R-SIG-Mac@r-project.org >> https://stat.ethz.ch/mailman/listinfo/r-sig-mac > _______________________________________________ R-SIG-Mac mailing list R-SIG-Mac@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-mac
