dev-cmd/prof: prevent from running on Apple Silicon

[dtrodrigues]

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The prof command does not currently work on Apple silicon

$ brew prof readall
Traceback (most recent call last):
	7: from /opt/homebrew/Library/Homebrew/vendor/bundle/ruby/2.6.0/bin/ruby-prof:23:in `<main>'
	6: from /opt/homebrew/Library/Homebrew/vendor/bundle/ruby/2.6.0/bin/ruby-prof:23:in `load'
	5: from /opt/homebrew/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/ruby-prof-1.4.3/bin/ruby-prof:4:in `<top (required)>'
	4: from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/rubygems/core_ext/kernel_require.rb:54:in `require'
	3: from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/rubygems/core_ext/kernel_require.rb:54:in `require'
	2: from /opt/homebrew/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/ruby-prof-1.4.3/lib/ruby-prof.rb:7:in `<top (required)>'
	1: from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/rubygems/core_ext/kernel_require.rb:54:in `require'
/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/rubygems/core_ext/kernel_require.rb:54:in `require': cannot load such file -- 2.6/ruby_prof.so (LoadError)
	7: from /opt/homebrew/Library/Homebrew/vendor/bundle/ruby/2.6.0/bin/ruby-prof:23:in `<main>'
	6: from /opt/homebrew/Library/Homebrew/vendor/bundle/ruby/2.6.0/bin/ruby-prof:23:in `load'
	5: from /opt/homebrew/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/ruby-prof-1.4.3/bin/ruby-prof:4:in `<top (required)>'
	4: from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/rubygems/core_ext/kernel_require.rb:54:in `require'
	3: from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/rubygems/core_ext/kernel_require.rb:54:in `require'
	2: from /opt/homebrew/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/ruby-prof-1.4.3/lib/ruby-prof.rb:5:in `<top (required)>'
	1: from /opt/homebrew/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/ruby-prof-1.4.3/lib/ruby-prof.rb:9:in `rescue in <top (required)>'
/opt/homebrew/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/ruby-prof-1.4.3/lib/ruby-prof.rb:9:in `require_relative': dlopen(/opt/homebrew/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/ruby-prof-1.4.3/ext/ruby_prof/ruby_prof.bundle, 0x0009): missing compatible arch in /opt/homebrew/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/ruby-prof-1.4.3/ext/ruby_prof/ruby_prof.bundle - /opt/homebrew/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/ruby-prof-1.4.3/ext/ruby_prof/ruby_prof.bundle (LoadError)

[BrewTestBot]

Review period will end on 2021-02-25 at 14:05:57 UTC.

[BrewTestBot]

Review period ended.

[wrobelda]

@dtrodrigues are these issues reported upstream somewhere? I couldn't find anything related in for either of the two profilers affected (ruby-prof and stackprof).

[Bo98]

Yes: #10210 (comment). Reported to Apple under FB9002047.

It's a system Ruby bug rather than anything specific to these profilers. A fix has already been prepared - it's just unknown exactly which macOS update it will land in.

[dtrodrigues]

It's not an issue with the gem itself, but rather an issue with native gems using the system ruby on Apple Silicon which has been reported to Apple: #10210 (comment)

[wrobelda]

Explains why I couldn't find it. Thank you both for answering almost simultaneously.