BUILD FAILED (macOS 26.1 on arm64 using ruby-build 20251117)

[atanasj]

No sure what is happening... The build seems to work but get an error at the end:

100% [852/852]  yjit.rb

Generating RI format into /private/var/folders/mx/l6m6d87n2q96zyhky3rp3fz40000gn/T/ruby-build.20251128222726.12857.n6lvWe/ruby-3.4.7/.ext/rdoc...

You can visit the home page at: �]8;;file:///private/var/folders/mx/l6m6d87n2q96zyhky3rp3fz40000gn/T/ruby-build.20251128222726.12857.n6lvWe/ruby-3.4.7/.ext/rdoc/index.html�\file:///private/var/folders/mx/l6m6d87n2q96zyhky3rp3fz40000gn/T/ruby-build.20251128222726.12857.n6lvWe/ruby-3.4.7/.ext/rdoc/index.html�]8;;�\


  Files:        852

  Classes:     1166 ( 249 undocumented)
  Modules:      201 (  58 undocumented)
  Constants:   2414 ( 539 undocumented)
  Attributes:  1146 ( 206 undocumented)
  Methods:    12926 (1903 undocumented)

  Total:      17853 (2955 undocumented)
   83.45% documented

  Elapsed: 19.4s

SDKROOT= ./miniruby -I./lib -I. -I.ext/common  ./tool/runruby.rb --extout=.ext  -- --disable-gems -r./arm64-darwin25-fake ./tool/rbinstall.rb --make="make" --dest-dir="" --extout=".ext" --ext-build-dir="./ext" --mflags="" --make-flags="" --data-mode=0644 --prog-mode=0755 --installed-list .installed.list --mantype="doc"  --gnumake --install=all --rdoc-output=".ext/rdoc" --html-output=".ext/html"
installing binary commands:         /Users/atanas/.rbenv/versions/3.4.7/bin
/private/var/folders/mx/l6m6d87n2q96zyhky3rp3fz40000gn/T/ruby-build.20251128222726.12857.n6lvWe/ruby-3.4.7/lib/fileutils.rb:400:in 'Dir.mkdir': Permission denied @ dir_s_mkdir - /Users/atanas/.rbenv/versions/3.4.7 (Errno::EACCES)
	from /private/var/folders/mx/l6m6d87n2q96zyhky3rp3fz40000gn/T/ruby-build.20251128222726.12857.n6lvWe/ruby-3.4.7/lib/fileutils.rb:400:in 'FileUtils#fu_mkdir'
	from /private/var/folders/mx/l6m6d87n2q96zyhky3rp3fz40000gn/T/ruby-build.20251128222726.12857.n6lvWe/ruby-3.4.7/lib/fileutils.rb:381:in 'block (2 levels) in FileUtils#mkdir_p'
	from /private/var/folders/mx/l6m6d87n2q96zyhky3rp3fz40000gn/T/ruby-build.20251128222726.12857.n6lvWe/ruby-3.4.7/lib/fileutils.rb:379:in 'Array#reverse_each'
	from /private/var/folders/mx/l6m6d87n2q96zyhky3rp3fz40000gn/T/ruby-build.20251128222726.12857.n6lvWe/ruby-3.4.7/lib/fileutils.rb:379:in 'block in FileUtils#mkdir_p'
	from /private/var/folders/mx/l6m6d87n2q96zyhky3rp3fz40000gn/T/ruby-build.20251128222726.12857.n6lvWe/ruby-3.4.7/lib/fileutils.rb:371:in 'Array#each'
	from /private/var/folders/mx/l6m6d87n2q96zyhky3rp3fz40000gn/T/ruby-build.20251128222726.12857.n6lvWe/ruby-3.4.7/lib/fileutils.rb:371:in 'FileUtils#mkdir_p'
	from ./tool/rbinstall.rb:238:in 'Object#makedirs'
	from ./tool/rbinstall.rb:351:in 'Object#prepare'
	from ./tool/rbinstall.rb:845:in 'block in <main>'
	from ./tool/rbinstall.rb:1218:in 'block in <main>'
	from ./tool/rbinstall.rb:1215:in 'Array#each'
	from ./tool/rbinstall.rb:1215:in '<main>'
make: *** [do-install-all] Error 1
external command failed with status 2

Relevant info from my M3 MacBook Air:

ProductName:		macOS
ProductVersion:		26.1
BuildVersion:		25B78

Any help greatly appreciated.

[mislav]

Hi, I'm noticing this error:

Permission denied @ dir_s_mkdir - /Users/atanas/.rbenv/versions/3.4.7 (Errno::EACCES)

It suggests that you don't have write access to ~/.rbenv/versions, which is odd but could have happened if you used sudo in the past for a command that created ~/.rbenv/versions some time in the past. You can check ownership information with: ls -la ~/.rbenv/versions; all listed files and folders should ideally be owned by user atanas and the group staff.

You can reset ownership by running: sudo chown -R atanas:staff ~/.rbenv

To prevent this from happening, you generally should not use sudo for any operations related to rbenv and ruby-build.