Error with Matrix, nlme and other 🤷🏻‍♂️

[MarcellGranat]

Hi, 👋

I am facing the following issue since I started to use Mac M1.

renv::restore()

Error:
! Error installing package 'nlme':

• installing source package ‘nlme’ ...
  ** package ‘nlme’ successfully unpacked and MD5 sums checked
  ** using staged installation
  ** libs
  using C compiler: ‘Apple clang version 16.0.0 (clang-1600.0.26.4)’
  sh: /opt/gfortran/bin/gfortran: No such file or directory
  using SDK: ‘’
  /opt/gfortran/bin/gfortran -arch arm64 -fPIC -Wall -g -O2 -c chol.f -o chol.o
  make: /opt/gfortran/bin/gfortran: No such file or directory
  make: *** [chol.o] Error 1
  ERROR: compilation failed for package ‘nlme’
• removing ‘/Users/marci/projects/rf/danone_kpi/renv/staging/4/nlme’

---

R was unable to find the gfortran binary.
gfortran is required for the compilation of FORTRAN source files.

Please check that gfortran is installed and available on the PATH.
Please see https://stackoverflow.com/q/35999874 for more information.

Reason(s):

• 'sh: /opt/gfortran/bin/gfortran: No such file or directory'
• 'make: /opt/gfortran/bin/gfortran: No such file or directory'
  install of package 'nlme' failed [error code 1]
  Show Traceback

Sorry to post, but I could not find any working solution in other posts.

R version 4.4.2 (2024-10-31)
Platform: aarch64-apple-darwin20
Running under: macOS Sequoia 15.2

[kevinushey]

You'll need to download gfortran -- e.g. from

https://mac.r-project.org/tools/
https://mac.r-project.org/tools/gfortran-12.2-universal.pkg

[MarcellGranat]

That's just genius! 🥳