Fix tests

Library/Homebrew/extend/os/linux/cleanup.rbi

@@ -1,5 +0,0 @@
-# typed: strict
-
-# module OS::Linux::Cleanup
-#   include Kernel
-# end

Library/Homebrew/extend/os/mac/hardware/cpu.rb

@@ -12,7 +12,7 @@ module OS
         # These methods use info spewed out by sysctl.
         # Look in <mach/machine.h> for decoding info.
         def type
-          case sysctl_int("hw.cputype")
+          case ::Hardware::CPU.sysctl_int("hw.cputype")
           when MachO::Headers::CPU_TYPE_I386
             :intel
           when MachO::Headers::CPU_TYPE_ARM64
@@ -24,9 +24,9 @@ module OS
 
         def family
           if ::Hardware::CPU.arm?
-            arm_family
+            ::Hardware::CPU.arm_family
           elsif ::Hardware::CPU.intel?
-            intel_family
+            ::Hardware::CPU.intel_family
           else
             :dunno
           end
@@ -37,11 +37,11 @@ module OS
         # conflict between what `uname` reports and the underlying `sysctl` flags,
         # since the `sysctl` flags don't change behaviour under Rosetta 2.
         def in_rosetta2?
-          sysctl_bool("sysctl.proc_translated")
+          ::Hardware::CPU.sysctl_bool("sysctl.proc_translated")
         end
 
         def features
-          @features ||= sysctl_n(
+          @features ||= ::Hardware::CPU.sysctl_n(
             "machdep.cpu.features",
             "machdep.cpu.extfeatures",
             "machdep.cpu.leaf7_features",
@@ -49,9 +49,18 @@ module OS
         end
 
         def sse4?
-          sysctl_bool("hw.optional.sse4_1")
+          ::Hardware::CPU.sysctl_bool("hw.optional.sse4_1")
+        end
+      end
+    end
+  end
 end
 
+Hardware::CPU.singleton_class.prepend(OS::Mac::Hardware::CPU)
+
+module Hardware
+  class CPU
+    class << self
       def extmodel
         sysctl_int("machdep.cpu.extmodel")
       end
@@ -94,8 +103,6 @@ module OS
         sysctl_bool("kern.hv_vmm_present")
       end
 
-        private
-
       def arm_family
         case sysctl_int("hw.cpufamily")
         when 0x2c91a47e             # ARMv8.0-A (Typhoon)
@@ -176,6 +183,3 @@ module OS
     end
   end
 end
-end
-
-Hardware::CPU.singleton_class.prepend(OS::Mac::Hardware::CPU)

Library/Homebrew/hardware.rbi

@@ -1,9 +0,0 @@
-# typed: strict
-
-module Hardware
-  class CPU
-    class << self
-      include OS::Mac::Hardware::CPU
-    end
-  end
-end

Library/Homebrew/keg.rbi

@@ -1,5 +1,6 @@
 # typed: strict
 
 class Keg
+  # This is only true under MacOS, so can lead to true negative type errors
   include OS::Mac::Keg
 end