Update deprecations

- Add some `odeprecated`
- Make some `odeprecated` now `odisabled`
- Remove `odisabled` code.
- Remove old update migrations
- Remove GCC 4.0 compiler
- Remove Tiger-only code
- Remove 32-bit-only code
- Remove use of LD64
- Remove GCC 4.3 - 4.8 support.

Library/Homebrew/brew.rb

@@ -12,8 +12,6 @@
 
 require_relative "global"
 
-require "update_migrator"
-
 begin
   trap("INT", std_trap) # restore default CTRL-C handler
 
@@ -77,14 +75,15 @@
     # `Homebrew.help` never returns, except for external/unknown commands.
   end
 
-  # Migrate LinkedKegs/PinnedKegs if update didn't already do so
-  UpdateMigrator.migrate_legacy_keg_symlinks_if_necessary
-
   # Uninstall old brew-cask if it's still around; we just use the tap now.
   if cmd == "cask" && (HOMEBREW_CELLAR/"brew-cask").exist?
     system(HOMEBREW_BREW_FILE, "uninstall", "--force", "brew-cask")
   end
 
+  if ENV["HOMEBREW_BUILD_FROM_SOURCE"]
+    odeprecated("HOMEBREW_BUILD_FROM_SOURCE", "--build-from-source")
+  end
+
   if internal_cmd
     Homebrew.send cmd.to_s.tr("-", "_").downcase
   elsif which "brew-#{cmd}"

Library/Homebrew/brew.sh

@@ -105,6 +105,18 @@ then
     HOMEBREW_FORCE_BREWED_CURL="1"
   fi
 
+  # Announce pre-Mavericks deprecation now
+  if [[ "$HOMEBREW_MACOS_VERSION_NUMERIC" -lt "100900" ]]
+  then
+    printf "WARNING: Your version of macOS (%s) will not be able to run Homebrew when\n" "$HOMEBREW_MACOS_VERSION" >&2
+    printf "         version 2.0.0 is released (Q1 2019)!\n" >&2
+    if [[ "$HOMEBREW_MACOS_VERSION_NUMERIC" -lt "100700" ]]
+    then
+      printf "         For 10.4 - 10.6 support see: https://github.com/mistydemeo/tigerbrew\n" >&2
+    fi
+    printf "\n" >&2
+  fi
+
   # The system Git on macOS versions before Sierra is too old for some Homebrew functionality we rely on.
   HOMEBREW_MINIMUM_GIT_VERSION="2.14.3"
   if [[ "$HOMEBREW_MACOS_VERSION_NUMERIC" -lt "101200" ]]

Library/Homebrew/cmd/install.rb

@@ -21,10 +21,9 @@
 #:
 #:    If `--cc=`<compiler> is passed, attempt to compile using <compiler>.
 #:    <compiler> should be the name of the compiler's executable, for instance
-#:    `gcc-8` for gcc 8, `gcc-4.2` for Apple's GCC 4.2, or `gcc-4.9` for a
-#:    Homebrew-provided GCC 4.9. In order to use LLVM's clang, use
-#:    `llvm_clang`. To specify the Apple-provided clang, use `clang`. This
-#:    parameter will only accept compilers that are provided by Homebrew or
+#:    `gcc-7` for GCC 7. In order to use LLVM's clang, use `llvm_clang`.
+#:    To specify the Apple-provided clang, use `clang`.
+#:    This parameter will only accept compilers that are provided by Homebrew or
 #:    bundled with macOS. Please do not file issues if you encounter errors
 #:    while using this flag.
 #:

Library/Homebrew/cmd/prune.rb

@@ -25,8 +25,7 @@ def prune_args
   def prune
     prune_args.parse
 
-    # TODO: deprecate and hide from manpage for next minor release.
-    # odeprecated("'brew prune'", "'brew cleanup'")
+    odeprecated("'brew prune'", "'brew cleanup'")
     Cleanup.new(dry_run: args.dry_run?).prune_prefix_symlinks_and_directories
   end
 end

Library/Homebrew/cmd/update-report.rb

@@ -7,7 +7,6 @@
 require "formulary"
 require "descriptions"
 require "cleanup"
-require "update_migrator"
 require "description_cache_store"
 
 module Homebrew
@@ -83,13 +82,6 @@ def update_report
       updated = true
     end
 
-    out, _, status = system_command("git",
-                                    args:         ["describe", "--tags", "--abbrev=0", initial_revision],
-                                    chdir:        HOMEBREW_REPOSITORY,
-                                    print_stderr: false)
-
-    initial_version = Version.new(out) if status.success?
-
     updated_taps = []
     Tap.each do |tap|
       next unless tap.git?
@@ -112,11 +104,6 @@ def update_report
       updated = true
     end
 
-    UpdateMigrator.migrate_legacy_cache_if_necessary
-    UpdateMigrator.migrate_cache_entries_to_double_dashes(initial_version)
-    UpdateMigrator.migrate_cache_entries_to_symlinks(initial_version)
-    UpdateMigrator.migrate_legacy_keg_symlinks_if_necessary
-
     if !updated
       if !ARGV.include?("--preinstall") && !ENV["HOMEBREW_UPDATE_FAILED"]
         puts "Already up-to-date."
@@ -140,12 +127,6 @@ def update_report
     Tap.each(&:link_completions_and_manpages)
 
     Homebrew.failed = true if ENV["HOMEBREW_UPDATE_FAILED"]
-
-    # This should always be the last thing to run (but skip on auto-update).
-    if !ARGV.include?("--preinstall") ||
-       ENV["HOMEBREW_ENABLE_AUTO_UPDATE_MIGRATION"]
-      UpdateMigrator.migrate_legacy_repository_if_necessary
-    end
   end
 
   def shorten_revision(revision)

Library/Homebrew/cmd/update.sh

@@ -66,39 +66,6 @@ git_init_if_necessary() {
   fi
 }
 
-rename_taps_dir_if_necessary() {
-  local tap_dir
-  local tap_dir_basename
-  local tap_dir_hyphens
-  local user
-  local repo
-
-  for tap_dir in "$HOMEBREW_LIBRARY"/Taps/*
-  do
-    [[ -d "$tap_dir/.git" ]] || continue
-    tap_dir_basename="${tap_dir##*/}"
-    if [[ "$tap_dir_basename" = *"-"* ]]
-    then
-      # only replace the *last* dash: yes, tap filenames suck
-      user="$(echo "${tap_dir_basename%-*}" | tr "[:upper:]" "[:lower:]")"
-      repo="$(echo "${tap_dir_basename:${#user}+1}" | tr "[:upper:]" "[:lower:]")"
-      mkdir -p "$HOMEBREW_LIBRARY/Taps/$user"
-      mv "$tap_dir" "$HOMEBREW_LIBRARY/Taps/$user/homebrew-$repo"
-
-      tap_dir_hyphens="${tap_dir_basename//[^\-]}"
-      if [[ ${#tap_dir_hyphens} -gt 1 ]]
-      then
-        echo "Homebrew changed the structure of Taps like <someuser>/<sometap>." >&2
-        echo "So you may need to rename $HOMEBREW_LIBRARY/Taps/$user/homebrew-$repo manually." >&2
-      fi
-    else
-      echo "Homebrew changed the structure of Taps like <someuser>/<sometap>. " >&2
-      echo "$tap_dir is an incorrect Tap path." >&2
-      echo "So you may need to rename it to $HOMEBREW_LIBRARY/Taps/<someuser>/homebrew-<sometap> manually." >&2
-    fi
-  done
-}
-
 repo_var() {
   local repo_var
 
@@ -427,15 +394,12 @@ EOS
   lock update
 
   git_init_if_necessary
-  # rename Taps directories
-  # this procedure will be removed in the future if it seems unnecessary
-  rename_taps_dir_if_necessary
 
   safe_cd "$HOMEBREW_REPOSITORY"
 
   # if an older system had a newer curl installed, change each repo's remote URL from GIT to HTTPS
   if [[ -n "$HOMEBREW_SYSTEM_CURL_TOO_OLD" &&
-        -x "$HOMEBREW_PREFIX/opt/curl/bin/curl" && 
+        -x "$HOMEBREW_PREFIX/opt/curl/bin/curl" &&
         "$(git config remote.origin.url)" =~ ^git:// ]]
   then
     git config remote.origin.url "$BREW_OFFICIAL_REMOTE"

Library/Homebrew/cmd/upgrade.rb

@@ -31,10 +31,10 @@ def upgrade
     # TODO: deprecate for next minor release.
     if ARGV.include?("--cleanup")
       ENV["HOMEBREW_INSTALL_CLEANUP"] = "1"
-      # odeprecated("'brew upgrade --cleanup'", "'HOMEBREW_INSTALL_CLEANUP'")
+      odeprecated("'brew upgrade --cleanup'", "'HOMEBREW_INSTALL_CLEANUP'")
     elsif ENV["HOMEBREW_UPGRADE_CLEANUP"]
       ENV["HOMEBREW_INSTALL_CLEANUP"] = "1"
-      # odeprecated("'HOMEBREW_UPGRADE_CLEANUP'", "'HOMEBREW_INSTALL_CLEANUP'")
+      odeprecated("'HOMEBREW_UPGRADE_CLEANUP'", "'HOMEBREW_INSTALL_CLEANUP'")
     end
 
     FormulaInstaller.prevent_build_flags unless DevelopmentTools.installed?

Library/Homebrew/compat.rb

@@ -1,7 +1,8 @@
 require "compat/extend/os/mac/utils/bottles"
+require "compat/os/mac"
 require "compat/requirements/x11_requirement"
 require "compat/requirements/xcode_requirement"
 require "compat/cask"
 require "compat/download_strategy"
-require "compat/fileutils"
+require "compat/formula"
 require "compat/tap"

Library/Homebrew/compat/cask.rb

@@ -1,8 +1,5 @@
-require "compat/cask/cask_loader"
-require "compat/cask/cmd/--version"
-require "compat/cask/cmd/cleanup"
-require "compat/cask/cmd/search"
 require "compat/cask/cache"
+require "compat/cask/cask_loader"
 require "compat/cask/caskroom"
 require "compat/cask/dsl"
 

Library/Homebrew/compat/download_strategy.rb

@@ -9,7 +9,7 @@
 # distribution.  (It will work for public buckets as well.)
 class S3DownloadStrategy < CurlDownloadStrategy
   def initialize(url, name, version, **meta)
-    odeprecated("S3DownloadStrategy",
+    odisabled("S3DownloadStrategy",
       "a vendored S3DownloadStrategy in your own formula or tap (using require_relative)")
     super
   end
@@ -58,7 +58,7 @@ class GitHubPrivateRepositoryDownloadStrategy < CurlDownloadStrategy
   require "utils/github"
 
   def initialize(url, name, version, **meta)
-    odeprecated("GitHubPrivateRepositoryDownloadStrategy",
+    odisabled("GitHubPrivateRepositoryDownloadStrategy",
       "a vendored GitHubPrivateRepositoryDownloadStrategy in your own formula or tap (using require_relative)")
     super
     parse_url_pattern
@@ -112,7 +112,7 @@ def validate_github_repository_access!
 # environment variables HOMEBREW_GITHUB_API_TOKEN) to sign the request.
 class GitHubPrivateRepositoryReleaseDownloadStrategy < GitHubPrivateRepositoryDownloadStrategy
   def initialize(url, name, version, **meta)
-    odeprecated("GitHubPrivateRepositoryReleaseDownloadStrategy",
+    odisabled("GitHubPrivateRepositoryReleaseDownloadStrategy",
       "a vendored GitHubPrivateRepositoryReleaseDownloadStrategy in your own formula or tap (using require_relative)")
     super
   end
@@ -168,7 +168,7 @@ def fetch_release_metadata
 #     ...
 class ScpDownloadStrategy < AbstractFileDownloadStrategy
   def initialize(url, name, version, **meta)
-    odeprecated("ScpDownloadStrategy",
+    odisabled("ScpDownloadStrategy",
       "a vendored ScpDownloadStrategy in your own formula or tap (using require_relative)")
     super
     parse_url_pattern
@@ -214,11 +214,11 @@ module Compat
       def detect_from_url(url)
         case url
         when %r{^s3://}
-          odeprecated("s3://",
+          odisabled("s3://",
             "a vendored S3DownloadStrategy in your own formula or tap (using require_relative)")
           S3DownloadStrategy
         when %r{^scp://}
-          odeprecated("scp://",
+          odisabled("scp://",
             "a vendored ScpDownloadStrategy in your own formula or tap (using require_relative)")
           ScpDownloadStrategy
         else
@@ -229,20 +229,20 @@ def detect_from_url(url)
       def detect_from_symbol(symbol)
         case symbol
         when :github_private_repo
-          odeprecated(":github_private_repo",
+          odisabled(":github_private_repo",
             "a vendored GitHubPrivateRepositoryDownloadStrategy in your own formula or tap (using require_relative)")
           GitHubPrivateRepositoryDownloadStrategy
         when :github_private_release
-          odeprecated(":github_private_repo",
+          odisabled(":github_private_repo",
             "a vendored GitHubPrivateRepositoryReleaseDownloadStrategy in your own formula or tap "\
             "(using require_relative)")
           GitHubPrivateRepositoryReleaseDownloadStrategy
         when :s3
-          odeprecated(":s3",
+          odisabled(":s3",
             "a vendored S3DownloadStrategy in your own formula or tap (using require_relative)")
           S3DownloadStrategy
         when :scp
-          odeprecated(":scp",
+          odisabled(":scp",
             "a vendored ScpDownloadStrategy in your own formula or tap (using require_relative)")
           ScpDownloadStrategy
         else

Library/Homebrew/compat/extend/os/mac/utils/bottles.rb

@@ -7,7 +7,7 @@ module Compat
         def tag_without_or_later(tag)
           return super unless tag.to_s.end_with?("_or_later")
 
-          odeprecated "`or_later` bottles",
+          odisabled "`or_later` bottles",
                       "bottles without `or_later` (or_later is implied now)"
           tag.to_s[/(\w+)_or_later$/, 1].to_sym
         end