Make CompilerSelectionError an InstallationError

Fixes Homebrew/homebrew#19962.

Library/Homebrew/compilers.rb

@@ -73,7 +73,7 @@ class CompilerSelector
     end while @f.fails_with?(cc)
 
     if cc.nil?
-      raise CompilerSelectionError
+      raise CompilerSelectionError.new(@f)
     else
       cc.name
     end

Library/Homebrew/exceptions.rb

@@ -218,9 +218,10 @@ end
 
 # raised by CompilerSelector if the formula fails with all of
 # the compilers available on the user's system
-class CompilerSelectionError < StandardError
-  def message; <<-EOS.undent
-    This formula cannot be built with any available compilers.
+class CompilerSelectionError < Homebrew::InstallationError
+  def initialize f
+    super f, <<-EOS.undent
+    #{f.name} cannot be built with any available compilers.
     To install this formula, you may need to:
       brew install apple-gcc42
     EOS

Library/Homebrew/extend/ENV/shared.rb

@@ -116,11 +116,7 @@ module SharedEnvExtension
   # If no valid compiler is found, raises an exception.
   def validate_cc!(formula)
     if formula.fails_with? ENV.compiler
-      begin
-        send CompilerSelector.new(formula).compiler
-      rescue CompilerSelectionError => e
-        raise e.message
-      end
+      send CompilerSelector.new(formula).compiler
     end
   end