Deprecate apr requirement.

It's not used on enough configurations now that there's little point in
keeping it around. See e.g. `:autoconf` for prior art.

2 files changed, 6 insertions, 3 deletions

diff --git a/Library/Homebrew/compat/dependency_collector.rb b/Library/Homebrew/compat/dependency_collector.rb
index b18adc490..bd72c55d4 100644
--- a/Library/Homebrew/compat/dependency_collector.rb
+++ b/Library/Homebrew/compat/dependency_collector.rb
@@ -13,6 +13,10 @@ class DependencyCollector
     when :cairo, :fontconfig, :freetype, :libpng, :pixman
       output_deprecation(spec, tags)
       Dependency.new(spec.to_s, tags)
+    when :apr
+      # TODO: reenable in future when we've fixed a few of the audits.
+      # output_deprecation(spec, tags, "apr-util")
+      Dependency.new("apr-util", tags)
     when :libltdl
       tags << :run
       output_deprecation("libtool", tags)
@@ -27,13 +31,13 @@ class DependencyCollector
     Dependency.new(spec.to_s, tags)
   end
 
-  def output_deprecation(dependency, tags)
+  def output_deprecation(dependency, tags, new_dependency = dependency)
     tags_string = if tags.length > 1
       " => [:#{tags.join ", :"}]"
     elsif tags.length == 1
       " => :#{tags.first}"
     end
     odeprecated "'depends_on :#{dependency}'",
-                "'depends_on \"#{dependency}\"#{tags_string}'"
+                "'depends_on \"#{new_dependency}\"#{tags_string}'"
   end
 end
diff --git a/Library/Homebrew/compat/requirements.rb b/Library/Homebrew/compat/requirements.rb
index 5c3c7a09c..77760d1dc 100644
--- a/Library/Homebrew/compat/requirements.rb
+++ b/Library/Homebrew/compat/requirements.rb
@@ -8,7 +8,6 @@ GPGRequirement             = GPG2Requirement
 TeXDependency              = TeXRequirement
 MercurialDependency        = MercurialRequirement
 GitDependency              = GitRequirement
-AprDependency              = AprRequirement
 FortranDependency          = FortranRequirement
 JavaDependency             = JavaRequirement
 LanguageModuleDependency   = LanguageModuleRequirement