diff --git a/Library/Homebrew/api.rb b/Library/Homebrew/api.rb
index 4b208fd0ec..e4028b2678 100644
--- a/Library/Homebrew/api.rb
+++ b/Library/Homebrew/api.rb
@@ -2,7 +2,6 @@
 # frozen_string_literal: true
 
 require "api/analytics"
-require "api/bottle"
 require "api/cask"
 require "api/cask-source"
 require "api/formula"
@@ -21,6 +20,7 @@ module Homebrew
     module_function
 
     API_DOMAIN = "https://formulae.brew.sh/api"
+    HOMEBREW_CACHE_API = (HOMEBREW_CACHE/"api").freeze
 
     sig { params(endpoint: String, json: T::Boolean).returns(T.any(String, Hash)) }
     def fetch(endpoint, json: true)
diff --git a/Library/Homebrew/api/bottle.rb b/Library/Homebrew/api/bottle.rb
deleted file mode 100644
index f7327bdf10..0000000000
--- a/Library/Homebrew/api/bottle.rb
+++ /dev/null
@@ -1,96 +0,0 @@
-# typed: false
-# frozen_string_literal: true
-
-require "github_packages"
-
-module Homebrew
-  module API
-    # Helper functions for using the bottle JSON API.
-    #
-    # @api private
-    module Bottle
-      class << self
-        extend T::Sig
-
-        sig { returns(String) }
-        def bottle_api_path
-          "bottle"
-        end
-        alias generic_bottle_api_path bottle_api_path
-
-        GITHUB_PACKAGES_SHA256_REGEX = %r{#{GitHubPackages::URL_REGEX}.*/blobs/sha256:(?<sha256>\h{64})$}.freeze
-
-        sig { params(name: String).returns(Hash) }
-        def fetch(name)
-          name = name.sub(%r{^homebrew/core/}, "")
-          Homebrew::API.fetch "#{bottle_api_path}/#{name}.json"
-        end
-
-        sig { params(name: String).returns(T::Boolean) }
-        def available?(name)
-          fetch name
-          true
-        rescue ArgumentError
-          false
-        end
-
-        sig { params(name: String).void }
-        def fetch_bottles(name)
-          hash = fetch(name)
-          bottle_tag = Utils::Bottles.tag.to_s
-
-          if !hash["bottles"].key?(bottle_tag) && !hash["bottles"].key?("all")
-            odie "No bottle available for #{name} on the current OS"
-          end
-
-          download_bottle(hash, bottle_tag)
-
-          hash["dependencies"].each do |dep_hash|
-            existing_formula = begin
-              Formulary.factory dep_hash["name"]
-            rescue FormulaUnavailableError
-              # The formula might not exist if it's not installed and homebrew/core isn't tapped
-              nil
-            end
-
-            next if existing_formula.present? && existing_formula.latest_version_installed?
-
-            download_bottle(dep_hash, bottle_tag)
-          end
-        end
-
-        sig { params(url: String).returns(T.nilable(String)) }
-        def checksum_from_url(url)
-          match = url.match GITHUB_PACKAGES_SHA256_REGEX
-          return if match.blank?
-
-          match[:sha256]
-        end
-
-        sig { params(hash: Hash, tag: String).void }
-        def download_bottle(hash, tag)
-          bottle = hash["bottles"][tag]
-          bottle ||= hash["bottles"]["all"]
-          return if bottle.blank?
-
-          sha256 = bottle["sha256"] || checksum_from_url(bottle["url"])
-          bottle_filename = ::Bottle::Filename.new(hash["name"], hash["pkg_version"], tag, hash["rebuild"])
-
-          resource = Resource.new hash["name"]
-          resource.url bottle["url"]
-          resource.sha256 sha256
-          resource.version hash["pkg_version"]
-          resource.downloader.resolved_basename = bottle_filename
-
-          resource.fetch
-
-          # Map the name of this formula to the local bottle path to allow the
-          # formula to be loaded by passing just the name to `Formulary::factory`.
-          [hash["name"], "homebrew/core/#{hash["name"]}"].each do |name|
-            Formulary.map_formula_name_to_local_bottle_path name, resource.downloader.cached_location
-          end
-        end
-      end
-    end
-  end
-end
diff --git a/Library/Homebrew/api/formula.rb b/Library/Homebrew/api/formula.rb
index 5e0774230b..a70fe31b8c 100644
--- a/Library/Homebrew/api/formula.rb
+++ b/Library/Homebrew/api/formula.rb
@@ -16,10 +16,34 @@ module Homebrew
         end
         alias generic_formula_api_path formula_api_path
 
+        sig { returns(String) }
+        def cached_formula_json_file
+          HOMEBREW_CACHE_API/"#{formula_api_path}.json"
+        end
+
         sig { params(name: String).returns(Hash) }
         def fetch(name)
           Homebrew::API.fetch "#{formula_api_path}/#{name}.json"
         end
+
+        sig { returns(Array) }
+        def all_formulae
+          @all_formulae ||= begin
+            curl_args = %w[--compressed --silent https://formulae.brew.sh/api/formula.json]
+            if cached_formula_json_file.exist?
+              last_modified = cached_formula_json_file.mtime.utc
+              last_modified = last_modified.strftime("%a, %d %b %Y %H:%M:%S GMT")
+              curl_args = ["--header", "If-Modified-Since: #{last_modified}", *curl_args]
+            end
+            curl_download(*curl_args, to: HOMEBREW_CACHE_API/"#{formula_api_path}.json", max_time: 5)
+
+            json_formulae = JSON.parse(cached_formula_json_file.read)
+
+            json_formulae.to_h do |json_formula|
+              [json_formula["name"], json_formula.except("name")]
+            end
+          end
+        end
       end
     end
   end
diff --git a/Library/Homebrew/brew.sh b/Library/Homebrew/brew.sh
index e22cc6c789..3e5bd2cedf 100644
--- a/Library/Homebrew/brew.sh
+++ b/Library/Homebrew/brew.sh
@@ -764,7 +764,7 @@ then
   export HOMEBREW_DEVELOPER_MODE="1"
 fi
 
-if [[ -n "${HOMEBREW_INSTALL_FROM_API}" && -n "${HOMEBREW_DEVELOPER_COMMAND}" ]]
+if [[ -n "${HOMEBREW_INSTALL_FROM_API}" && -n "${HOMEBREW_DEVELOPER_COMMAND}" && "${HOMEBREW_COMMAND}" != "irb" ]]
 then
   odie "Developer commands cannot be run while HOMEBREW_INSTALL_FROM_API is set!"
 elif [[ -n "${HOMEBREW_INSTALL_FROM_API}" && -n "${HOMEBREW_DEVELOPER_MODE}" ]]
diff --git a/Library/Homebrew/cask/cask.rb b/Library/Homebrew/cask/cask.rb
index c25726316a..85a59c0582 100644
--- a/Library/Homebrew/cask/cask.rb
+++ b/Library/Homebrew/cask/cask.rb
@@ -6,7 +6,6 @@ require "cask/config"
 require "cask/dsl"
 require "cask/metadata"
 require "searchable"
-require "api"
 
 module Cask
   # An instance of a cask.
@@ -166,14 +165,7 @@ module Cask
       # special case: tap version is not available
       return [] if version.nil?
 
-      latest_version = if Homebrew::EnvConfig.install_from_api? &&
-                          (latest_cask_version = Homebrew::API::Versions.latest_cask_version(token))
-        DSL::Version.new latest_cask_version.to_s
-      else
-        version
-      end
-
-      if latest_version.latest?
+      if version.latest?
         return versions if (greedy || greedy_latest) && outdated_download_sha?
 
         return []
@@ -185,10 +177,10 @@ module Cask
       current   = installed.last
 
       # not outdated unless there is a different version on tap
-      return [] if current == latest_version
+      return [] if current == version
 
       # collect all installed versions that are different than tap version and return them
-      installed.reject { |v| v == latest_version }
+      installed.reject { |v| v == version }
     end
 
     def outdated_info(greedy, verbose, json, greedy_latest, greedy_auto_updates)
diff --git a/Library/Homebrew/cask/cask_loader.rb b/Library/Homebrew/cask/cask_loader.rb
index 0b231fcbc9..5116aadd9f 100644
--- a/Library/Homebrew/cask/cask_loader.rb
+++ b/Library/Homebrew/cask/cask_loader.rb
@@ -214,7 +214,15 @@ module Cask
         FromTapPathLoader,
         FromPathLoader,
       ].each do |loader_class|
-        return loader_class.new(ref) if loader_class.can_load?(ref)
+        next unless loader_class.can_load?(ref)
+
+        if loader_class == FromTapLoader && Homebrew::EnvConfig.install_from_api? &&
+           ref.start_with?("homebrew/cask/") && !Tap.fetch("homebrew/cask").installed? &&
+           Homebrew::API::CaskSource.available?(ref)
+          return FromContentLoader.new(Homebrew::API::CaskSource.fetch(ref))
+        end
+
+        return loader_class.new(ref)
       end
 
       return FromTapPathLoader.new(default_path(ref)) if FromTapPathLoader.can_load?(default_path(ref))
@@ -231,6 +239,10 @@ module Cask
         EOS
       end
 
+      if Homebrew::EnvConfig.install_from_api? && Homebrew::API::CaskSource.available?(ref)
+        return FromContentLoader.new(Homebrew::API::CaskSource.fetch(ref))
+      end
+
       possible_installed_cask = Cask.new(ref)
       return FromPathLoader.new(possible_installed_cask.installed_caskfile) if possible_installed_cask.installed?
 
diff --git a/Library/Homebrew/cask/caskroom.rb b/Library/Homebrew/cask/caskroom.rb
index 29558f7476..7fe5fc5461 100644
--- a/Library/Homebrew/cask/caskroom.rb
+++ b/Library/Homebrew/cask/caskroom.rb
@@ -49,7 +49,8 @@ module Cask
         begin
           if (tap_path = CaskLoader.tap_paths(token).first)
             CaskLoader::FromTapPathLoader.new(tap_path).load(config: config)
-          elsif (caskroom_path = Pathname.glob(path.join(".metadata/*/*/*/*.rb")).first)
+          elsif (caskroom_path = Pathname.glob(path.join(".metadata/*/*/*/*.rb")).first) &&
+                (!Homebrew::EnvConfig.install_from_api? || !Homebrew::API::CaskSource.available?(token))
             CaskLoader::FromPathLoader.new(caskroom_path).load(config: config)
           else
             CaskLoader.load(token, config: config)
diff --git a/Library/Homebrew/cask_dependent.rb b/Library/Homebrew/cask_dependent.rb
index e1f3f6bd34..cb9841fb8b 100644
--- a/Library/Homebrew/cask_dependent.rb
+++ b/Library/Homebrew/cask_dependent.rb
@@ -45,8 +45,8 @@ class CaskDependent
     end
   end
 
-  def recursive_dependencies(ignore_missing: false, &block)
-    Dependency.expand(self, ignore_missing: ignore_missing, &block)
+  def recursive_dependencies(&block)
+    Dependency.expand(self, &block)
   end
 
   def recursive_requirements(&block)
diff --git a/Library/Homebrew/cli/named_args.rb b/Library/Homebrew/cli/named_args.rb
index 9d484a141d..e7337d2cf8 100644
--- a/Library/Homebrew/cli/named_args.rb
+++ b/Library/Homebrew/cli/named_args.rb
@@ -45,18 +45,16 @@ module Homebrew
       # the formula and prints a warning unless `only` is specified.
       sig {
         params(
-          only:                    T.nilable(Symbol),
-          ignore_unavailable:      T.nilable(T::Boolean),
-          method:                  T.nilable(Symbol),
-          uniq:                    T::Boolean,
-          prefer_loading_from_api: T::Boolean,
+          only:               T.nilable(Symbol),
+          ignore_unavailable: T.nilable(T::Boolean),
+          method:             T.nilable(Symbol),
+          uniq:               T::Boolean,
         ).returns(T::Array[T.any(Formula, Keg, Cask::Cask)])
       }
-      def to_formulae_and_casks(only: parent&.only_formula_or_cask, ignore_unavailable: nil, method: nil, uniq: true,
-                                prefer_loading_from_api: false)
+      def to_formulae_and_casks(only: parent&.only_formula_or_cask, ignore_unavailable: nil, method: nil, uniq: true)
         @to_formulae_and_casks ||= {}
         @to_formulae_and_casks[only] ||= downcased_unique_named.flat_map do |name|
-          load_formula_or_cask(name, only: only, method: method, prefer_loading_from_api: prefer_loading_from_api)
+          load_formula_or_cask(name, only: only, method: method)
         rescue FormulaUnreadableError, FormulaClassUnavailableError,
                TapFormulaUnreadableError, TapFormulaClassUnavailableError,
                Cask::CaskUnreadableError
@@ -90,15 +88,10 @@ module Homebrew
         end.uniq.freeze
       end
 
-      def load_formula_or_cask(name, only: nil, method: nil, prefer_loading_from_api: false)
+      def load_formula_or_cask(name, only: nil, method: nil)
         unreadable_error = nil
 
         if only != :cask
-          if prefer_loading_from_api && Homebrew::EnvConfig.install_from_api? &&
-             Homebrew::API::Bottle.available?(name)
-            Homebrew::API::Bottle.fetch_bottles(name)
-          end
-
           begin
             formula = case method
             when nil, :factory
@@ -129,16 +122,11 @@ module Homebrew
         end
 
         if only != :formula
-          if prefer_loading_from_api && Homebrew::EnvConfig.install_from_api? &&
-             Homebrew::API::CaskSource.available?(name)
-            contents = Homebrew::API::CaskSource.fetch(name)
-          end
-
           want_keg_like_cask = [:latest_kegs, :default_kegs, :kegs].include?(method)
 
           begin
             config = Cask::Config.from_args(@parent) if @cask_options
-            cask = Cask::CaskLoader.load(contents || name, config: config)
+            cask = Cask::CaskLoader.load(name, config: config)
 
             if unreadable_error.present?
               onoe <<~EOS
diff --git a/Library/Homebrew/cmd/fetch.rb b/Library/Homebrew/cmd/fetch.rb
index daba7dbfef..4d68457bde 100644
--- a/Library/Homebrew/cmd/fetch.rb
+++ b/Library/Homebrew/cmd/fetch.rb
@@ -66,26 +66,18 @@ module Homebrew
     args = fetch_args.parse
 
     bucket = if args.deps?
-      args.named.to_formulae_and_casks(prefer_loading_from_api: true).flat_map do |formula_or_cask|
+      args.named.to_formulae_and_casks.flat_map do |formula_or_cask|
         case formula_or_cask
         when Formula
           f = formula_or_cask
 
-          deps = if Homebrew::EnvConfig.install_from_api?
-            f.recursive_dependencies do |_, dependency|
-              Dependency.prune if EnvConfig.install_from_api? && (dependency.build? || dependency.test?)
-            end
-          else
-            f.recursive_dependencies
-          end
-
-          [f, *deps.map(&:to_formula)]
+          [f, *f.recursive_dependencies.map(&:to_formula)]
         else
           formula_or_cask
         end
       end
     else
-      args.named.to_formulae_and_casks(prefer_loading_from_api: true)
+      args.named.to_formulae_and_casks
     end.uniq
 
     puts "Fetching: #{bucket * ", "}" if bucket.size > 1
diff --git a/Library/Homebrew/cmd/info.rb b/Library/Homebrew/cmd/info.rb
index a541b36ef1..a9e489bc4f 100644
--- a/Library/Homebrew/cmd/info.rb
+++ b/Library/Homebrew/cmd/info.rb
@@ -252,16 +252,7 @@ module Homebrew
   def info_formula(f, args:)
     specs = []
 
-    if Homebrew::EnvConfig.install_from_api? && Homebrew::API::Bottle.available?(f.name)
-      info = Homebrew::API::Bottle.fetch(f.name)
-
-      latest_version = info["pkg_version"].split("_").first
-      bottle_exists = info["bottles"].key?(Utils::Bottles.tag.to_s) || info["bottles"].key?("all")
-
-      s = "stable #{latest_version}"
-      s += " (bottled)" if bottle_exists
-      specs << s
-    elsif (stable = f.stable)
+    if (stable = f.stable)
       s = "stable #{stable.version}"
       s += " (bottled)" if stable.bottled? && f.pour_bottle?
       specs << s
diff --git a/Library/Homebrew/cmd/install.rb b/Library/Homebrew/cmd/install.rb
index ae56fc16d6..4e817276d2 100644
--- a/Library/Homebrew/cmd/install.rb
+++ b/Library/Homebrew/cmd/install.rb
@@ -167,7 +167,7 @@ module Homebrew
     end
 
     begin
-      formulae, casks = args.named.to_formulae_and_casks(prefer_loading_from_api: true)
+      formulae, casks = args.named.to_formulae_and_casks
                             .partition { |formula_or_cask| formula_or_cask.is_a?(Formula) }
     rescue FormulaOrCaskUnavailableError, Cask::CaskUnavailableError => e
       retry if Tap.install_default_cask_tap_if_necessary(force: args.cask?)
diff --git a/Library/Homebrew/cmd/outdated.rb b/Library/Homebrew/cmd/outdated.rb
index 568bf925ae..933de05583 100644
--- a/Library/Homebrew/cmd/outdated.rb
+++ b/Library/Homebrew/cmd/outdated.rb
@@ -98,10 +98,7 @@ module Homebrew
         if verbose?
           outdated_kegs = f.outdated_kegs(fetch_head: args.fetch_HEAD?)
 
-          current_version = if !f.head? && Homebrew::EnvConfig.install_from_api? &&
-                               (f.core_formula? || f.tap.blank?)
-            Homebrew::API::Versions.latest_formula_version(f.name)&.to_s || f.pkg_version.to_s
-          elsif f.alias_changed? && !f.latest_formula.latest_version_installed?
+          current_version = if f.alias_changed? && !f.latest_formula.latest_version_installed?
             latest = f.latest_formula
             "#{latest.name} (#{latest.pkg_version})"
           elsif f.head? && outdated_kegs.any? { |k| k.version.to_s == f.pkg_version.to_s }
diff --git a/Library/Homebrew/cmd/reinstall.rb b/Library/Homebrew/cmd/reinstall.rb
index e4b692afab..fa0f68f0b4 100644
--- a/Library/Homebrew/cmd/reinstall.rb
+++ b/Library/Homebrew/cmd/reinstall.rb
@@ -88,22 +88,6 @@ module Homebrew
   def reinstall
     args = reinstall_args.parse
 
-    # We need to use the bottle API instead of just using the formula file
-    # from an installed keg because it will not contain bottle information.
-    # As a consequence, `brew reinstall` will also upgrade outdated formulae
-    if Homebrew::EnvConfig.install_from_api?
-      args.named.each do |name|
-        formula = Formulary.factory(name)
-        next unless formula.any_version_installed?
-        next if formula.tap.present? && !formula.core_formula?
-        next unless Homebrew::API::Bottle.available?(name)
-
-        Homebrew::API::Bottle.fetch_bottles(name)
-      rescue FormulaUnavailableError
-        next
-      end
-    end
-
     formulae, casks = args.named.to_formulae_and_casks(method: :resolve)
                           .partition { |o| o.is_a?(Formula) }
 
diff --git a/Library/Homebrew/cmd/update.sh b/Library/Homebrew/cmd/update.sh
index 551a063257..19285aa4f8 100644
--- a/Library/Homebrew/cmd/update.sh
+++ b/Library/Homebrew/cmd/update.sh
@@ -745,6 +745,20 @@ EOS
     fi
   done
 
+  if [[ -n "${HOMEBREW_INSTALL_FROM_API}" ]]
+  then
+    mkdir -p "${HOMEBREW_CACHE}/api"
+    # TODO: use --header If-Modified-Since
+    curl \
+      "${CURL_DISABLE_CURLRC_ARGS[@]}" \
+      --fail --compressed --silent --max-time 5 \
+      --location --remote-time --output "${HOMEBREW_CACHE}/api/formula.json" \
+      --user-agent "${HOMEBREW_USER_AGENT_CURL}" \
+      "https://formulae.brew.sh/api/formula.json"
+    # TODO: we probably want to print an error if this fails.
+    # TODO: set HOMEBREW_UPDATED or HOMEBREW_UPDATE_FAILED
+  fi
+
   safe_cd "${HOMEBREW_REPOSITORY}"
 
   # HOMEBREW_UPDATE_AUTO wasn't modified in subshell.
diff --git a/Library/Homebrew/cmd/upgrade.rb b/Library/Homebrew/cmd/upgrade.rb
index b7fa29b427..c9d7c007c8 100644
--- a/Library/Homebrew/cmd/upgrade.rb
+++ b/Library/Homebrew/cmd/upgrade.rb
@@ -161,19 +161,6 @@ module Homebrew
       puts pinned.map { |f| "#{f.full_specified_name} #{f.pkg_version}" } * ", "
     end
 
-    if Homebrew::EnvConfig.install_from_api?
-      formulae_to_install.map! do |formula|
-        next formula if formula.head?
-        next formula if formula.tap.present? && !formula.core_formula?
-        next formula unless Homebrew::API::Bottle.available?(formula.name)
-
-        Homebrew::API::Bottle.fetch_bottles(formula.name)
-        Formulary.factory(formula.name)
-      rescue FormulaUnavailableError
-        formula
-      end
-    end
-
     if formulae_to_install.empty?
       oh1 "No packages to upgrade"
     else
@@ -226,15 +213,6 @@ module Homebrew
   def upgrade_outdated_casks(casks, args:)
     return false if args.formula?
 
-    if Homebrew::EnvConfig.install_from_api?
-      casks = casks.map do |cask|
-        next cask if cask.tap.present? && cask.tap != "homebrew/cask"
-        next cask unless Homebrew::API::CaskSource.available?(cask.token)
-
-        Cask::CaskLoader.load Homebrew::API::CaskSource.fetch(cask.token)
-      end
-    end
-
     Cask::Cmd::Upgrade.upgrade_casks(
       *casks,
       force:               args.force?,
diff --git a/Library/Homebrew/dependency.rb b/Library/Homebrew/dependency.rb
index 2b3f9b2013..7ac088dc16 100644
--- a/Library/Homebrew/dependency.rb
+++ b/Library/Homebrew/dependency.rb
@@ -46,15 +46,6 @@ class Dependency
     formula
   end
 
-  def unavailable_core_formula?
-    to_formula
-    false
-  rescue CoreTapFormulaUnavailableError
-    true
-  rescue
-    false
-  end
-
   def installed?
     to_formula.latest_version_installed?
   end
@@ -98,7 +89,7 @@ class Dependency
     # the list.
     # The default filter, which is applied when a block is not given, omits
     # optionals and recommendeds based on what the dependent has asked for
-    def expand(dependent, deps = dependent.deps, cache_key: nil, ignore_missing: false, &block)
+    def expand(dependent, deps = dependent.deps, cache_key: nil, &block)
       # Keep track dependencies to avoid infinite cyclic dependency recursion.
       @expand_stack ||= []
       @expand_stack.push dependent.name
@@ -112,22 +103,20 @@ class Dependency
 
       deps.each do |dep|
         next if dependent.name == dep.name
-        # avoid downloading build dependency bottles
-        next if dep.build? && dependent.pour_bottle? && Homebrew::EnvConfig.install_from_api?
 
-        case action(dependent, dep, ignore_missing: ignore_missing, &block)
+        case action(dependent, dep, &block)
         when :prune
           next
         when :skip
           next if @expand_stack.include? dep.name
 
-          expanded_deps.concat(expand(dep.to_formula, cache_key: cache_key, ignore_missing: ignore_missing, &block))
+          expanded_deps.concat(expand(dep.to_formula, cache_key: cache_key, &block))
         when :keep_but_prune_recursive_deps
           expanded_deps << dep
         else
           next if @expand_stack.include? dep.name
 
-          expanded_deps.concat(expand(dep.to_formula, cache_key: cache_key, ignore_missing: ignore_missing, &block))
+          expanded_deps.concat(expand(dep.to_formula, cache_key: cache_key, &block))
           expanded_deps << dep
         end
       end
@@ -139,10 +128,8 @@ class Dependency
       @expand_stack.pop
     end
 
-    def action(dependent, dep, ignore_missing: false, &block)
+    def action(dependent, dep, &block)
       catch(:action) do
-        prune if ignore_missing && dep.unavailable_core_formula?
-
         if block
           yield dependent, dep
         elsif dep.optional? || dep.recommended?
diff --git a/Library/Homebrew/diagnostic.rb b/Library/Homebrew/diagnostic.rb
index d262d3541d..6d1eee6e41 100644
--- a/Library/Homebrew/diagnostic.rb
+++ b/Library/Homebrew/diagnostic.rb
@@ -890,7 +890,7 @@ module Homebrew
             # Formulae installed with HOMEBREW_INSTALL_FROM_API should not count as deleted formulae
             # but may not have a tap listed in their tab
             tap = Tab.for_keg(keg).tap
-            next if (tap.blank? || tap.core_tap?) && Homebrew::API::Bottle.available?(keg.name)
+            next if (tap.blank? || tap.core_tap?) && Homebrew::API::Formula.all_formulae.key?(keg.name)
           end
 
           keg.name
diff --git a/Library/Homebrew/exceptions.rb b/Library/Homebrew/exceptions.rb
index 4e1d0387f9..6f83563226 100644
--- a/Library/Homebrew/exceptions.rb
+++ b/Library/Homebrew/exceptions.rb
@@ -234,13 +234,6 @@ class TapFormulaUnavailableError < FormulaUnavailableError
   end
 end
 
-# Raised when a formula in a the core tap is unavailable.
-class CoreTapFormulaUnavailableError < TapFormulaUnavailableError
-  def initialize(name)
-    super CoreTap.instance, name
-  end
-end
-
 # Raised when a formula in a specific tap does not contain a formula class.
 class TapFormulaClassUnavailableError < TapFormulaUnavailableError
   include FormulaClassUnavailableErrorModule
diff --git a/Library/Homebrew/extend/os/linux/keg_relocate.rb b/Library/Homebrew/extend/os/linux/keg_relocate.rb
index b76f3cb15c..4fafbbd6fa 100644
--- a/Library/Homebrew/extend/os/linux/keg_relocate.rb
+++ b/Library/Homebrew/extend/os/linux/keg_relocate.rb
@@ -84,16 +84,9 @@ class Keg
   def self.bottle_dependencies
     @bottle_dependencies ||= begin
       formulae = relocation_formulae
-      if Homebrew::EnvConfig.install_from_api?
-        gcc_hash = Homebrew::API::Formula.fetch(CompilerSelector.preferred_gcc)
-        preferred_gcc_version = Version.new gcc_hash["versions"]["stable"]
-      else
-        gcc = Formulary.factory(CompilerSelector.preferred_gcc)
-        preferred_gcc_version = gcc.version
-      end
+      gcc = Formulary.factory(CompilerSelector.preferred_gcc)
       if !Homebrew::EnvConfig.simulate_macos_on_linux? &&
-         DevelopmentTools.non_apple_gcc_version("gcc") < preferred_gcc_version.major
-        gcc = Formulary.factory(CompilerSelector.preferred_gcc) if Homebrew::EnvConfig.install_from_api?
+         DevelopmentTools.non_apple_gcc_version("gcc") < gcc.version.to_i
         formulae += gcc.recursive_dependencies.map(&:name)
         formulae << gcc.name
       end
diff --git a/Library/Homebrew/formula.rb b/Library/Homebrew/formula.rb
index e1d43818a3..ee2cae9dd0 100644
--- a/Library/Homebrew/formula.rb
+++ b/Library/Homebrew/formula.rb
@@ -525,14 +525,7 @@ class Formula
   # exists and is not empty.
   # @private
   def latest_version_installed?
-    latest_prefix = if !head? && Homebrew::EnvConfig.install_from_api? &&
-                       (latest_pkg_version = Homebrew::API::Versions.latest_formula_version(name))
-      prefix latest_pkg_version
-    else
-      latest_installed_prefix
-    end
-
-    (dir = latest_prefix).directory? && !dir.children.empty?
+    (dir = latest_installed_prefix).directory? && !dir.children.empty?
   end
 
   # If at least one version of {Formula} is installed.
@@ -1352,11 +1345,6 @@ class Formula
     Formula.cache[:outdated_kegs][cache_key] ||= begin
       all_kegs = []
       current_version = T.let(false, T::Boolean)
-      latest_version = if !head? && Homebrew::EnvConfig.install_from_api? && (core_formula? || tap.blank?)
-        Homebrew::API::Versions.latest_formula_version(name) || pkg_version
-      else
-        pkg_version
-      end
 
       installed_kegs.each do |keg|
         all_kegs << keg
@@ -1364,8 +1352,8 @@ class Formula
         next if version.head?
 
         tab = Tab.for_keg(keg)
-        next if version_scheme > tab.version_scheme && latest_version != version
-        next if version_scheme == tab.version_scheme && latest_version > version
+        next if version_scheme > tab.version_scheme && pkg_version != version
+        next if version_scheme == tab.version_scheme && pkg_version > version
 
         # don't consider this keg current if there's a newer formula available
         next if follow_installed_alias? && new_formula_available?
diff --git a/Library/Homebrew/formula_installer.rb b/Library/Homebrew/formula_installer.rb
index 149c501ddc..53b72b9428 100644
--- a/Library/Homebrew/formula_installer.rb
+++ b/Library/Homebrew/formula_installer.rb
@@ -218,11 +218,6 @@ 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?
 
diff --git a/Library/Homebrew/formulary.rb b/Library/Homebrew/formulary.rb
index 4889b5785e..4bc7f65c8b 100644
--- a/Library/Homebrew/formulary.rb
+++ b/Library/Homebrew/formulary.rb
@@ -6,6 +6,8 @@ require "extend/cachable"
 require "tab"
 require "utils/bottles"
 
+require "active_support/core_ext/hash/deep_transform_values"
+
 # The {Formulary} is responsible for creating instances of {Formula}.
 # It is not meant to be used directly from formulae.
 #
@@ -26,22 +28,32 @@ module Formulary
     !@factory_cache.nil?
   end
 
-  def self.formula_class_defined?(path)
-    cache.key?(path)
+  def self.formula_class_defined_from_path?(path)
+    cache.key?(:path) && cache[:path].key?(path)
   end
 
-  def self.formula_class_get(path)
-    cache.fetch(path)
+  def self.formula_class_defined_from_api?(name)
+    cache.key?(:api) && cache[:api].key?(name)
+  end
+
+  def self.formula_class_get_from_path(path)
+    cache[:path].fetch(path)
+  end
+
+  def self.formula_class_get_from_api(name)
+    cache[:api].fetch(name)
   end
 
   def self.clear_cache
-    cache.each do |key, klass|
-      next if key == :formulary_factory
+    cache.each do |type, cached_objects|
+      next if type == :formulary_factory
 
-      namespace = klass.name.deconstantize
-      next if namespace.deconstantize != name
+      cached_objects.each_value do |klass|
+        namespace = klass.name.deconstantize
+        next if namespace.deconstantize != name
 
-      remove_const(namespace.demodulize)
+        remove_const(namespace.demodulize)
+      end
     end
 
     super
@@ -108,7 +120,95 @@ module Formulary
     contents = path.open("r") { |f| ensure_utf8_encoding(f).read }
     namespace = "FormulaNamespace#{Digest::MD5.hexdigest(path.to_s)}"
     klass = load_formula(name, path, contents, namespace, flags: flags, ignore_errors: ignore_errors)
-    cache[path] = klass
+    cache[:path] ||= {}
+    cache[:path][path] = klass
+  end
+
+  def self.load_formula_from_api(name, flags:)
+    namespace = "FormulaNamespaceAPI#{Digest::MD5.hexdigest(name)}"
+
+    mod = Module.new
+    remove_const(namespace) if const_defined?(namespace)
+    const_set(namespace, mod)
+
+    mod.const_set(:BUILD_FLAGS, flags)
+
+    class_s = Formulary.class_s(name)
+    json_formula = Homebrew::API::Formula.all_formulae[name]
+
+    klass = Class.new(::Formula) do
+      desc json_formula["desc"]
+      homepage json_formula["homepage"]
+      license json_formula["license"]
+      revision json_formula["revision"]
+      version_scheme json_formula["version_scheme"]
+
+      if (urls_stable = json_formula["urls"]["stable"]).present?
+        stable do
+          url urls_stable["url"]
+          version json_formula["versions"]["stable"]
+        end
+      end
+
+      if (bottles_stable = json_formula["bottle"]["stable"]).present?
+        bottle do
+          root_url bottles_stable["root_url"]
+          rebuild bottles_stable["rebuild"]
+          bottles_stable["files"].each do |tag, bottle_spec|
+            cellar = Formulary.convert_to_string_or_symbol bottle_spec["cellar"]
+            sha256 cellar: cellar, tag.to_sym => bottle_spec["sha256"]
+          end
+        end
+      end
+
+      if (keg_only_reason = json_formula["keg_only_reason"]).present?
+        reason = Formulary.convert_to_string_or_symbol keg_only_reason["reason"]
+        keg_only reason, keg_only_reason["explanation"]
+      end
+
+      if (deprecation_date = json_formula["deprecation_date"]).present?
+        deprecate! date: deprecation_date, because: json_formula["deprecation_reason"]
+      end
+
+      if (disable_date = json_formula["disable_date"]).present?
+        disable! date: disable_date, because: json_formula["disable_reason"]
+      end
+
+      json_formula["build_dependencies"].each do |dep|
+        depends_on dep => :build
+      end
+
+      json_formula["dependencies"].each do |dep|
+        depends_on dep
+      end
+
+      json_formula["recommended_dependencies"].each do |dep|
+        depends_on dep => :recommended
+      end
+
+      json_formula["optional_dependencies"].each do |dep|
+        depends_on dep => :optional
+      end
+
+      json_formula["uses_from_macos"].each do |dep|
+        dep = dep.deep_transform_values(&:to_sym) if dep.is_a?(Hash)
+        uses_from_macos dep
+      end
+
+      def install
+        raise "Cannot build from source from abstract formula."
+      end
+
+      @caveats_string = json_formula["caveats"]
+      def caveats
+        @caveats_string
+      end
+    end
+
+    mod.const_set(class_s, klass)
+
+    cache[:api] ||= {}
+    cache[:api][name] = klass
   end
 
   def self.resolve(name, spec: nil, force_bottle: false, flags: [])
@@ -155,6 +255,12 @@ module Formulary
     class_name
   end
 
+  def self.convert_to_string_or_symbol(string)
+    return string[1..].to_sym if string.start_with?(":")
+
+    string
+  end
+
   # A {FormulaLoader} returns instances of formulae.
   # Subclasses implement loaders for particular sources of formulae.
   class FormulaLoader
@@ -182,8 +288,8 @@ module Formulary
     end
 
     def klass(flags:, ignore_errors:)
-      load_file(flags: flags, ignore_errors: ignore_errors) unless Formulary.formula_class_defined?(path)
-      Formulary.formula_class_get(path)
+      load_file(flags: flags, ignore_errors: ignore_errors) unless Formulary.formula_class_defined_from_path?(path)
+      Formulary.formula_class_get_from_path(path)
     end
 
     private
@@ -345,10 +451,6 @@ 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
 
@@ -367,10 +469,6 @@ module Formulary
     end
 
     def get_formula(*)
-      if !CoreTap.instance.installed? && Homebrew::EnvConfig.install_from_api?
-        raise CoreTapFormulaUnavailableError, name
-      end
-
       raise FormulaUnavailableError, name
     end
   end
@@ -392,6 +490,26 @@ module Formulary
     end
   end
 
+  # Load formulae from the API.
+  class FormulaAPILoader < FormulaLoader
+    def initialize(name)
+      super name, Formulary.core_path(name)
+    end
+
+    def klass(flags:, ignore_errors:)
+      load_from_api(flags: flags) unless Formulary.formula_class_defined_from_api?(name)
+      Formulary.formula_class_get_from_api(name)
+    end
+
+    private
+
+    def load_from_api(flags:)
+      $stderr.puts "#{$PROGRAM_NAME} (#{self.class.name}): loading #{name} from API" if debug?
+
+      Formulary.load_formula_from_api(name, flags: flags)
+    end
+  end
+
   # Return a {Formula} instance for the given reference.
   # `ref` is a string containing:
   #
@@ -405,12 +523,6 @@ module Formulary
   )
     raise ArgumentError, "Formulae must have a ref!" unless ref
 
-    if Homebrew::EnvConfig.install_from_api? &&
-       @formula_name_local_bottle_path_map.present? &&
-       @formula_name_local_bottle_path_map.key?(ref)
-      ref = @formula_name_local_bottle_path_map[ref]
-    end
-
     cache_key = "#{ref}-#{spec}-#{alias_path}-#{from}"
     if factory_cached? && cache[:formulary_factory] &&
        cache[:formulary_factory][cache_key]
@@ -427,24 +539,6 @@ module Formulary
     formula
   end
 
-  # Map a formula name to a local/fetched bottle archive. This mapping will be used by {Formulary::factory}
-  # to allow formulae to be loaded automatically from their local bottle archive without
-  # needing to exist in a tap or be passed as a complete path. For example,
-  # to map `hello` from its bottle archive:
-  # <pre>Formulary.map_formula_name_to_local_bottle_path "hello", HOMEBREW_CACHE/"hello--2.10"
-  # Formulary.factory "hello" # returns the hello formula from the local bottle archive
-  # </pre>
-  # @param formula_name the formula name string to map.
-  # @param local_bottle_path a path pointing to the target bottle archive.
-  def self.map_formula_name_to_local_bottle_path(formula_name, local_bottle_path)
-    unless Homebrew::EnvConfig.install_from_api?
-      raise UsageError, "HOMEBREW_INSTALL_FROM_API not set but required for #{__method__}!"
-    end
-
-    @formula_name_local_bottle_path_map ||= {}
-    @formula_name_local_bottle_path_map[formula_name] = Pathname(local_bottle_path).realpath
-  end
-
   # Return a {Formula} instance for the given rack.
   #
   # @param spec when nil, will auto resolve the formula's spec.
@@ -539,11 +633,9 @@ 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?
+        return FormulaAPILoader.new(name) if Homebrew::API::Formula.all_formulae.key?(name)
       end
 
       return TapLoader.new(ref, from: from)
@@ -557,6 +649,12 @@ module Formulary
     possible_alias = CoreTap.instance.alias_dir/ref
     return AliasLoader.new(possible_alias) if possible_alias.file?
 
+    if !CoreTap.instance.installed? &&
+       Homebrew::EnvConfig.install_from_api? &&
+       Homebrew::API::Formula.all_formulae.key?(ref)
+      return FormulaAPILoader.new(ref)
+    end
+
     possible_tap_formulae = tap_paths(ref)
     raise TapFormulaAmbiguityError.new(ref, possible_tap_formulae) if possible_tap_formulae.size > 1
 
diff --git a/Library/Homebrew/tap.rb b/Library/Homebrew/tap.rb
index 173c13ce40..7a2fba9256 100644
--- a/Library/Homebrew/tap.rb
+++ b/Library/Homebrew/tap.rb
@@ -142,8 +142,6 @@ class Tap
   # The remote repository name of this {Tap}.
   # e.g. `user/homebrew-repo`
   def remote_repo
-    raise TapUnavailableError, name unless installed?
-
     return unless remote
 
     @remote_repo ||= remote.delete_prefix("https://github.com/")
@@ -795,6 +793,12 @@ class CoreTap < Tap
     safe_system HOMEBREW_BREW_FILE, "tap", instance.name
   end
 
+  def remote
+    super if installed? || !Homebrew::EnvConfig.install_from_api?
+
+    Homebrew::EnvConfig.core_git_remote
+  end
+
   # CoreTap never allows shallow clones (on request from GitHub).
   def install(quiet: false, clone_target: nil, force_auto_update: nil, custom_remote: false)
     remote = Homebrew::EnvConfig.core_git_remote # set by HOMEBREW_CORE_GIT_REMOTE
diff --git a/Library/Homebrew/test/api/bottle_spec.rb b/Library/Homebrew/test/api/bottle_spec.rb
deleted file mode 100644
index 3fe9e450a1..0000000000
--- a/Library/Homebrew/test/api/bottle_spec.rb
+++ /dev/null
@@ -1,95 +0,0 @@
-# typed: false
-# frozen_string_literal: true
-
-require "api"
-
-describe Homebrew::API::Bottle do
-  let(:bottle_json) {
-    <<~EOS
-      {
-        "name": "hello",
-        "pkg_version": "2.10",
-        "rebuild": 0,
-        "bottles": {
-          "arm64_big_sur": {
-            "url": "https://ghcr.io/v2/homebrew/core/hello/blobs/sha256:b3b083db0807ff92c6e289a298f378198354b7727fb9ba9f4d550b8e08f90a60"
-          },
-          "big_sur": {
-            "url": "https://ghcr.io/v2/homebrew/core/hello/blobs/sha256:69489ae397e4645127aa7773211310f81ebb6c99e1f8e3e22c5cdb55333f5408"
-          },
-          "x86_64_linux": {
-            "url": "https://ghcr.io/v2/homebrew/core/hello/blobs/sha256:e6980196298e0a9cfe4fa4e328a71a1869a4d5e1d31c38442150ed784cfc0e29"
-          }
-        },
-        "dependencies": []
-      }
-    EOS
-  }
-  let(:bottle_hash) { JSON.parse(bottle_json) }
-
-  def mock_curl_output(stdout: "", success: true)
-    curl_output = OpenStruct.new(stdout: stdout, success?: success)
-    allow(Utils::Curl).to receive(:curl_output).and_return curl_output
-  end
-
-  describe "::fetch" do
-    it "fetches the bottle JSON for a formula that exists" do
-      mock_curl_output stdout: bottle_json
-      fetched_hash = described_class.fetch("foo")
-      expect(fetched_hash).to eq bottle_hash
-    end
-
-    it "raises an error if the formula does not exist" do
-      mock_curl_output success: false
-      expect { described_class.fetch("bar") }.to raise_error(ArgumentError, /No file found/)
-    end
-
-    it "raises an error if the bottle JSON is invalid" do
-      mock_curl_output stdout: "foo"
-      expect { described_class.fetch("baz") }.to raise_error(ArgumentError, /Invalid JSON file/)
-    end
-  end
-
-  describe "::available?" do
-    it "returns `true` if `fetch` succeeds" do
-      allow(described_class).to receive(:fetch)
-      expect(described_class.available?("foo")).to be true
-    end
-
-    it "returns `false` if `fetch` fails" do
-      allow(described_class).to receive(:fetch).and_raise ArgumentError
-      expect(described_class.available?("foo")).to be false
-    end
-  end
-
-  describe "::fetch_bottles" do
-    before do
-      ENV["HOMEBREW_INSTALL_FROM_API"] = "1"
-      allow(described_class).to receive(:fetch).and_return bottle_hash
-    end
-
-    it "fetches bottles if a bottle is available" do
-      allow(Utils::Bottles).to receive(:tag).and_return :arm64_big_sur
-      expect { described_class.fetch_bottles("hello") }.not_to raise_error
-    end
-
-    it "raises an error if no bottle is available" do
-      allow(Utils::Bottles).to receive(:tag).and_return :catalina
-      expect { described_class.fetch_bottles("hello") }.to raise_error(SystemExit)
-    end
-  end
-
-  describe "::checksum_from_url" do
-    let(:sha256) { "b3b083db0807ff92c6e289a298f378198354b7727fb9ba9f4d550b8e08f90a60" }
-    let(:url) { "https://ghcr.io/v2/homebrew/core/hello/blobs/sha256:#{sha256}" }
-    let(:non_ghp_url) { "https://formulae.brew.sh/api/formula/hello.json" }
-
-    it "returns the `sha256` for a GitHub packages URL" do
-      expect(described_class.checksum_from_url(url)).to eq sha256
-    end
-
-    it "returns `nil` for a non-GitHub packages URL" do
-      expect(described_class.checksum_from_url(non_ghp_url)).to be_nil
-    end
-  end
-end
diff --git a/Library/Homebrew/test/formulary_spec.rb b/Library/Homebrew/test/formulary_spec.rb
index 78b0a413fc..b371c84c26 100644
--- a/Library/Homebrew/test/formulary_spec.rb
+++ b/Library/Homebrew/test/formulary_spec.rb
@@ -201,28 +201,107 @@ describe Formulary do
         }.to raise_error(TapFormulaAmbiguityError)
       end
     end
-  end
 
-  describe "::map_formula_name_to_local_bottle_path" do
-    before do
-      formula_path.dirname.mkpath
-      formula_path.write formula_content
-    end
+    context "when loading from the API" do
+      def formula_json_contents(extra_items = {})
+        {
+          formula_name => {
+            "desc"                     => "testball",
+            "homepage"                 => "https://example.com",
+            "license"                  => "MIT",
+            "revision"                 => 0,
+            "version_scheme"           => 0,
+            "versions"                 => { "stable" => "0.1" },
+            "urls"                     => {
+              "stable" => {
+                "url"      => "file://#{TEST_FIXTURE_DIR}/tarballs/testball-0.1.tbz",
+                "tag"      => nil,
+                "revision" => nil,
+              },
+            },
+            "bottle"                   => {
+              "stable" => {
+                "rebuild"  => 0,
+                "root_url" => "file://#{bottle_dir}",
+                "files"    => {
+                  Utils::Bottles.tag.to_s => {
+                    "cellar" => ":any",
+                    "url"    => "file://#{bottle_dir}/#{formula_name}",
+                    "sha256" => "8f9aecd233463da6a4ea55f5f88fc5841718c013f3e2a7941350d6130f1dc149",
+                  },
+                },
+              },
+            },
+            "keg_only_reason"          => {
+              "reason"      => ":provided_by_macos",
+              "explanation" => "",
+            },
+            "build_dependencies"       => ["build_dep"],
+            "dependencies"             => ["dep"],
+            "recommended_dependencies" => ["recommended_dep"],
+            "optional_dependencies"    => ["optional_dep"],
+            "uses_from_macos"          => ["uses_from_macos_dep"],
+            "caveats"                  => "",
+          }.merge(extra_items),
+        }
+      end
 
-    it "maps a reference to a new Formula" do
-      expect {
-        described_class.factory("formula-to-map")
-      }.to raise_error(FormulaUnavailableError)
+      let(:deprecate_json) do
+        {
+          "deprecation_date"   => "2022-06-15",
+          "deprecation_reason" => "repo_archived",
+        }
+      end
 
-      ENV["HOMEBREW_INSTALL_FROM_API"] = nil
-      expect {
-        described_class.map_formula_name_to_local_bottle_path "formula-to-map", formula_path
-      }.to raise_error(UsageError, /HOMEBREW_INSTALL_FROM_API not set/)
+      let(:disable_json) do
+        {
+          "disable_date"   => "2022-06-15",
+          "disable_reason" => "repo_archived",
+        }
+      end
 
-      ENV["HOMEBREW_INSTALL_FROM_API"] = "1"
-      described_class.map_formula_name_to_local_bottle_path "formula-to-map", formula_path
+      before do
+        allow(described_class).to receive(:loader_for).and_return(described_class::FormulaAPILoader.new(formula_name))
+      end
 
-      expect(described_class.factory("formula-to-map")).to be_kind_of(Formula)
+      it "returns a Formula when given a name" do
+        allow(Homebrew::API::Formula).to receive(:all_formulae).and_return formula_json_contents
+
+        formula = described_class.factory(formula_name)
+        expect(formula).to be_kind_of(Formula)
+        expect(formula.keg_only_reason.reason).to eq :provided_by_macos
+        if OS.mac?
+          expect(formula.deps.count).to eq 4
+        elsif OS.linux?
+          expect(formula.deps.count).to eq 5
+        end
+        expect(formula.uses_from_macos_elements).to eq ["uses_from_macos_dep"]
+        expect {
+          formula.install
+        }.to raise_error("Cannot build from source from abstract formula.")
+      end
+
+      it "returns a deprecated Formula when given a name" do
+        allow(Homebrew::API::Formula).to receive(:all_formulae).and_return formula_json_contents(deprecate_json)
+
+        formula = described_class.factory(formula_name)
+        expect(formula).to be_kind_of(Formula)
+        expect(formula.deprecated?).to be true
+        expect {
+          formula.install
+        }.to raise_error("Cannot build from source from abstract formula.")
+      end
+
+      it "returns a disabled Formula when given a name" do
+        allow(Homebrew::API::Formula).to receive(:all_formulae).and_return formula_json_contents(disable_json)
+
+        formula = described_class.factory(formula_name)
+        expect(formula).to be_kind_of(Formula)
+        expect(formula.disabled?).to be true
+        expect {
+          formula.install
+        }.to raise_error("Cannot build from source from abstract formula.")
+      end
     end
   end