ci: tired of waiting for gnome mirrors

Author: flavorjones

.github/workflows/downstream.yml

@@ -16,9 +16,6 @@ on:
     types: [opened, synchronize]
     branches:
       - '*'
-env:
-  NOKOGIRI_USE_CANONICAL_GNOME_SOURCE: t
-
 jobs:
   downstream:
     name: downstream-${{matrix.name}}

ext/nokogiri/extconf.rb

@@ -240,15 +240,7 @@ def zlib_source(version_string)
 end
 
 def gnome_source
-  # As of 2022-02-20, some mirrors have expired SSL certificates. I'm able to retrieve from my home,
-  # but whatever host is resolved on the github actions workers see an expired cert.
-  #
-  # See https://github.com/sparklemotion/nokogiri/runs/5266206403?check_suite_focus=true
-  if ENV["NOKOGIRI_USE_CANONICAL_GNOME_SOURCE"]
-    "https://download.gnome.org"
-  else
-    "https://muug.ca/mirror/gnome" # old reliable
-  end
+  "https://download.gnome.org"
 end
 
 LOCAL_PACKAGE_RESPONSE = Object.new