Revert "Binary patching of build prefixes"

Library/Homebrew/extend/os/mac/keg_relocate.rb

@@ -183,14 +183,4 @@ class Keg
     # it's wrong. -O is a BSD-grep-only option.
     "-lrO"
   end
-
-  def egrep_args
-    grep_bin = "egrep"
-    grep_args = recursive_fgrep_args
-    [grep_bin, grep_args]
-  end
-
-  def codesign_patched_binary(binary_file)
-    apply_ad_hoc_signature(binary_file)
-  end
 end

Library/Homebrew/formula_installer.rb

@@ -1230,10 +1230,6 @@ class FormulaInstaller
     keg = Keg.new(formula.prefix)
     skip_linkage = formula.bottle_specification.skip_relocation?
     keg.replace_placeholders_with_locations tab.changed_files, skip_linkage: skip_linkage
-
-    return if formula.bottle_specification.skip_prefix_relocation?
-
-    keg.relocate_build_prefix(keg, Utils::Bottles.tag.default_prefix, HOMEBREW_PREFIX)
   end
 
   sig { params(output: T.nilable(String)).void }

Library/Homebrew/keg_relocate.rb

@@ -8,7 +8,6 @@ class Keg
   LIBRARY_PLACEHOLDER = "@@HOMEBREW_LIBRARY@@"
   PERL_PLACEHOLDER = "@@HOMEBREW_PERL@@"
   JAVA_PLACEHOLDER = "@@HOMEBREW_JAVA@@"
-  BINARY_NULL_CHARACTER = "\x00"
 
   class Relocation
     extend T::Sig
@@ -164,49 +163,6 @@ class Keg
     changed_files
   end
 
-  def relocate_build_prefix(keg, old_prefix, new_prefix)
-    # Find binaries which match prefix strings.
-    string_matches = Set.new
-    keg.each_unique_file_matching(old_prefix) do |file|
-      string_matches << file
-    end
-
-    binary_string_matches = Set.new
-    keg.each_unique_binary_file do |file|
-      binary_string_matches << file if string_matches.include?(file)
-    end
-
-    # Only consider string matches which are binary files with null bytes, and remove any
-    # matches which are sharballs found by text_files.
-    binary_string_matches -= text_files
-
-    # Split binary by null characters into array and substitute new cellar for old cellar.
-    # Null padding is added if the new string is too short.
-    binary_string_matches.each do |binary_file|
-      binary_file.ensure_writable do
-        binary = File.binread binary_file
-        puts "Replacing build prefix in: #{binary_file}"
-        binary_strings = binary.split(BINARY_NULL_CHARACTER)
-        match_indices = binary_strings.each_index.select { |i| binary_strings[i].include?(old_prefix) }
-
-        # Only perform substitution on strings which match prefix regex.
-        match_indices.each do |i|
-          s = binary_strings[i]
-          binary_strings[i] = s.gsub(old_prefix, new_prefix).ljust(s.size, BINARY_NULL_CHARACTER)
-        end
-
-        # Add back null padding at the end of the binary if needed.
-        patched_binary = binary_strings.join(BINARY_NULL_CHARACTER).ljust(binary.size, BINARY_NULL_CHARACTER)
-        if patched_binary.size != binary.size
-          raise "Patching failed!  Original and patched binary sizes do not match."
-        end
-
-        binary_file.atomic_write patched_binary
-      end
-      codesign_patched_binary(binary_file)
-    end
-  end
-
   def detect_cxx_stdlibs(_options = {})
     []
   end
@@ -217,47 +173,19 @@ class Keg
   end
   alias generic_recursive_fgrep_args recursive_fgrep_args
 
-  def egrep_args
-    grep_bin = "grep"
-    grep_args = recursive_fgrep_args
-    grep_args += "Pa"
-    [grep_bin, grep_args]
-  end
-  alias generic_egrep_args egrep_args
-
-  def each_unique_file(io)
-    hardlinks = Set.new
-
-    until io.eof?
-      file = Pathname.new(io.readline.chomp)
-      # Don't yield symlinks
-      next if file.symlink?
-
-      # Only yield a file if it has a unique inode.
-      # This makes sure we don't yield hardlinks.
-      yield file if hardlinks.add? file.stat.ino
-    end
-  end
-
   def each_unique_file_matching(string)
     Utils.popen_read("fgrep", recursive_fgrep_args, string, to_s) do |io|
-      each_unique_file(io)
+      hardlinks = Set.new
+
+      until io.eof?
+        file = Pathname.new(io.readline.chomp)
+        next if file.symlink?
+
+        yield file if hardlinks.add? file.stat.ino
+      end
     end
   end
 
-  def each_unique_binary_file
-    grep_bin, grep_args = egrep_args
-
-    # An extra \ is needed for the null character when calling grep
-    Utils.popen_read(grep_bin, grep_args, "\#{BINARY_NULL_CHARACTER}", to_s) do |io|
-      each_unique_file(io)
-    end
-  end
-
-  def codesign_patched_binary(_binary_file)
-    []
-  end
-
   def lib
     path/"lib"
   end

Library/Homebrew/software_spec.rb

@@ -347,11 +347,6 @@ class Bottle
     @spec.compatible_locations?(tag: @tag)
   end
 
-  # Should the build prefix be relocated?
-  def skip_prefix_relocation?
-    @spec.skip_prefix_relocation?(tag: @tag)
-  end
-
   # Does the bottle need to be relocated?
   def skip_relocation?
     @spec.skip_relocation?(tag: @tag)
@@ -478,8 +473,6 @@ class Bottle
 end
 
 class BottleSpecification
-  RELOCATABLE_CELLARS = [:any, :any_skip_relocation].freeze
-
   extend T::Sig
 
   attr_rw :rebuild
@@ -520,30 +513,7 @@ class BottleSpecification
       tag.default_cellar
     end
 
-    return true if RELOCATABLE_CELLARS.include?(cellar)
+    return true if [:any, :any_skip_relocation].include?(cellar)
-
-    prefix = Pathname(cellar).parent.to_s
-
-    cellar_relocatable = cellar.size >= HOMEBREW_CELLAR.to_s.size && ENV["HOMEBREW_RELOCATE_BUILD_PREFIX"]
-    prefix_relocatable = prefix.size >= HOMEBREW_PREFIX.to_s.size && ENV["HOMEBREW_RELOCATE_BUILD_PREFIX"]
-
-    compatible_cellar = cellar == HOMEBREW_CELLAR.to_s || cellar_relocatable
-    compatible_prefix = prefix == HOMEBREW_PREFIX.to_s || prefix_relocatable
-
-    compatible_cellar && compatible_prefix
-  end
-
-  # Should the build prefix for the {Bottle} this {BottleSpecification} belongs to be relocated?
-  sig { params(tag: Utils::Bottles::Tag).returns(T::Boolean) }
-  def skip_prefix_relocation?(tag: Utils::Bottles.tag)
-    spec = collector.specification_for(tag)
-    cellar = if spec.present?
-      spec.cellar
-    else
-      tag.default_cellar
-    end
-
-    return true if RELOCATABLE_CELLARS.include?(cellar)
 
     prefix = Pathname(cellar).parent.to_s