Merge pull request #11824 from cnnrmnn/latest-head-kegs

Library/Homebrew/cli/named_args.rb

@@ -324,7 +324,11 @@ module Homebrew
         # Return keg if it is the only installed keg
         return kegs if kegs.length == 1
 
-        kegs.reject { |k| k.version.head? }.max_by(&:version)
+        stable_kegs = kegs.reject { |k| k.version.head? }
+
+        return kegs.max_by { |keg| Tab.for_keg(keg).source_modified_time } if stable_kegs.blank?
+
+        stable_kegs.max_by(&:version)
       end
 
       def resolve_default_keg(name)

Library/Homebrew/test/cli/named_args_spec.rb

@@ -223,12 +223,16 @@ describe Homebrew::CLI::NamedArgs do
       (HOMEBREW_CELLAR/"foo/1.0").mkpath
       (HOMEBREW_CELLAR/"foo/2.0").mkpath
       (HOMEBREW_CELLAR/"bar/1.0").mkpath
+      (HOMEBREW_CELLAR/"baz/HEAD-1").mkpath
+      head2 = HOMEBREW_CELLAR/"baz/HEAD-2"
+      head2.mkpath
+      (head2/"INSTALL_RECEIPT.json").write (TEST_FIXTURE_DIR/"receipt.json").read
     end
 
     it "resolves the latest kegs with #resolve_latest_keg" do
-      latest_kegs = described_class.new("foo", "bar").to_latest_kegs
-      expect(latest_kegs.map(&:name)).to eq ["foo", "bar"]
-      expect(latest_kegs.map { |k| k.version.version.to_s }).to eq ["2.0", "1.0"]
+      latest_kegs = described_class.new("foo", "bar", "baz").to_latest_kegs
+      expect(latest_kegs.map(&:name)).to eq ["foo", "bar", "baz"]
+      expect(latest_kegs.map { |k| k.version.version.to_s }).to eq ["2.0", "1.0", "HEAD-2"]
     end
 
     it "when there are no matching kegs returns an empty array" do

Library/Homebrew/test/support/fixtures/receipt.json

@@ -15,6 +15,7 @@
     "bin/foo"
   ],
   "time": 1403827774,
+  "source_modified_time": 1628303333,
   "HEAD": "deadbeefdeadbeefdeadbeefdeadbeefdeadbeef",
   "alias_path": "/usr/local/Library/Taps/homebrew/homebrew-core/Aliases/test-formula",
   "stdlib": "libcxx",