Merge pull request #12350 from Rylan12/install-from-api-core-deps

Handle `depends_on "homebrew/core/foo"` for `HOMEBREW_INSTALL_FROM_API`

Library/Homebrew/formula_installer.rb

@@ -212,6 +212,11 @@ class FormulaInstaller
   def verify_deps_exist
     begin
       compute_dependencies
+    rescue CoreTapFormulaUnavailableError => e
+      raise unless Homebrew::API::Bottle.available? e.name
+
+      Homebrew::API::Bottle.fetch_bottles(e.name)
+      retry
     rescue TapFormulaUnavailableError => e
       raise if e.tap.installed?
 

Library/Homebrew/formulary.rb

@@ -343,6 +343,10 @@ module Formulary
     rescue FormulaClassUnavailableError => e
       raise TapFormulaClassUnavailableError.new(tap, name, e.path, e.class_name, e.class_list), "", e.backtrace
     rescue FormulaUnavailableError => e
+      if tap.core_tap? && Homebrew::EnvConfig.install_from_api?
+        raise CoreTapFormulaUnavailableError.new(name), "", e.backtrace
+      end
+
       raise TapFormulaUnavailableError.new(tap, name), "", e.backtrace
     end
 
@@ -533,6 +537,13 @@ module Formulary
     when URL_START_REGEX
       return FromUrlLoader.new(ref)
     when HOMEBREW_TAP_FORMULA_REGEX
+      # If `homebrew/core` is specified and not installed, check whether the formula is already installed.
+      if ref.start_with?("homebrew/core/") && !CoreTap.instance.installed? && Homebrew::EnvConfig.install_from_api?
+        name = ref.split("/", 3).last
+        possible_keg_formula = Pathname.new("#{HOMEBREW_PREFIX}/opt/#{name}/.brew/#{name}.rb")
+        return FormulaLoader.new(name, possible_keg_formula) if possible_keg_formula.file?
+      end
+
       return TapLoader.new(ref, from: from)
     end