Simplify `bundle viz` specs

Only install the ruby-graphviz for the workers that will run the
specific viz specs.

3 files changed, 5 insertions, 10 deletions

diff --git a/spec/commands/viz_spec.rb b/spec/commands/viz_spec.rb
index 029c3aca24..e21d52feed 100644
--- a/spec/commands/viz_spec.rb
+++ b/spec/commands/viz_spec.rb
@@ -2,12 +2,11 @@
 
 RSpec.describe "bundle viz", :bundler => "< 3", :if => Bundler.which("dot") do
   let(:ruby_graphviz) do
-    graphviz_glob = base_system_gems.join("cache/ruby-graphviz*")
-    Pathname.glob(graphviz_glob).first
+    "ruby-graphviz --version 1.2.4"
   end
 
   before do
-    system_gems ruby_graphviz
+    realworld_system_gems ruby_graphviz
   end
 
   it "graphs gems from the Gemfile" do
@@ -82,7 +81,7 @@ RSpec.describe "bundle viz", :bundler => "< 3", :if => Bundler.which("dot") do
         end
       end
 
-      system_gems ruby_graphviz, "graphviz-999", :gem_repo => gem_repo4
+      system_gems "graphviz-999", :gem_repo => gem_repo4
     end
 
     it "loads the correct ruby-graphviz gem" do
diff --git a/spec/other/major_deprecation_spec.rb b/spec/other/major_deprecation_spec.rb
index df2fdd263a..4bf07e7844 100644
--- a/spec/other/major_deprecation_spec.rb
+++ b/spec/other/major_deprecation_spec.rb
@@ -543,12 +543,11 @@ The :gist git source is deprecated, and will be removed in the future. Add this
 
   context "bundle viz" do
     let(:ruby_graphviz) do
-      graphviz_glob = base_system_gems.join("cache/ruby-graphviz*")
-      Pathname.glob(graphviz_glob).first
+      "ruby-graphviz --version 1.2.4"
     end
 
     before do
-      system_gems ruby_graphviz
+      realworld_system_gems ruby_graphviz
       create_file "gems.rb"
       bundle "viz"
     end
diff --git a/spec/support/rubygems_ext.rb b/spec/support/rubygems_ext.rb
index 62e2274fbe..4534447ff5 100644
--- a/spec/support/rubygems_ext.rb
+++ b/spec/support/rubygems_ext.rb
@@ -22,9 +22,6 @@ module Spec
       # Rake version has to be consistent for tests to pass
       "rake" => "13.0.1",
       "builder" => "~> 3.2",
-      # ruby-graphviz is used by the viz tests
-      # for >= Ruby 2.3
-      "ruby-graphviz" => "1.2.4",
     }
 
     extend self