From d3eaae9cc22d725b74dfdef3446b12d09fb1d9d1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?V=C3=ADt=20Ondruch?= <vondruch@redhat.com>
Date: Mon, 11 Dec 2023 16:39:24 +0100
Subject: [PATCH] Change again the way default gem home is configured

This reverts commit 5bd6a6753bdf406a2ce63cb6012a979ab4357ab5.

This should be possible doable, because default gems are configurable
since:

https://github.com/rubygems/rubygems/pull/2841
---
 operating_system.rb | 48 +++++++++++++++++++++++++++------------------
 1 file changed, 29 insertions(+), 19 deletions(-)

diff --git a/operating_system.rb b/operating_system.rb
index f38aa5d..fd56386 100644
--- a/operating_system.rb
+++ b/operating_system.rb
@@ -87,41 +87,51 @@ module Gem
     # Remove methods we are going to override. This avoids "method redefined;"
     # warnings otherwise issued by Ruby.
 
-    remove_method :operating_system_defaults if method_defined? :operating_system_defaults
     remove_method :default_dir if method_defined? :default_dir
+    remove_method :default_specifications_dir if method_defined? :default_specifications_dir
     remove_method :default_path if method_defined? :default_path
+    remove_method :default_bindir if method_defined? :default_bindir
     remove_method :default_ext_dir_for if method_defined? :default_ext_dir_for
 
-    ##
-    # Regular user installs into user directory, root manages /usr/local.
-
-    def operating_system_defaults
-      unless opt_build_root?
-        options = if Process.uid == 0
-          "--install-dir=#{Gem.default_dirs[:local][:gem_dir]} --bindir #{Gem.default_dirs[:local][:bin_dir]}"
-        else
-          "--user-install --bindir #{File.join [Dir.home, 'bin']}"
-        end
-
-        {"gem" => options}
-      else
-        {}
-      end
-    end
-
     ##
     # RubyGems default overrides.
 
     def default_dir
-      @default_dir ||= Gem.default_dirs[:system][:gem_dir]
+      if opt_build_root?
+        Gem.default_dirs[:system][:gem_dir]
+      elsif Process.uid == 0
+        Gem.default_dirs[:local][:gem_dir]
+      else
+        Gem.user_dir
+      end
     end
 
+    ##
+    # Path to specification files of default gems.
+
+    def default_specifications_dir
+      @default_specifications_dir ||= File.join(Gem.default_dirs[:system][:gem_dir], "specifications", "default")
+    end
+
+    ##
+    # Default gem load path
+
     def default_path
       path = default_dirs.collect {|location, paths| paths[:gem_dir]}
       path.unshift Gem.user_dir if File.exist? Gem.user_home
       path
     end
 
+    def default_bindir
+      if opt_build_root?
+        Gem.default_dirs[:system][:bin_dir]
+      elsif Process.uid == 0
+        Gem.default_dirs[:local][:bin_dir]
+      else
+        File.join [Dir.home, 'bin']
+      end
+    end
+
     def default_ext_dir_for base_dir
       dir = if rpmbuild?
         build_dir = base_dir.chomp Gem.default_dirs[:system][:gem_dir]