From 1481eac57c92144eb67fd34b9adad81e94be2b59 Mon Sep 17 00:00:00 2001
From: Mike McQuaid <mike@mikemcquaid.com>
Date: Tue, 15 Aug 2023 11:42:02 +0100
Subject: [PATCH] brew.sh: don't set `HOMEBREW_NO_INSTALL_FROM_API`
 automatically.

My understanding is that now https://github.com/Homebrew/brew/pull/15778
has been merged this should now work fine on both older macOS versions
and non-default prefixes so let's try this again.
---
 Library/Homebrew/brew.sh              | 16 ----------------
 Library/Homebrew/cmd/update-report.rb |  3 +--
 Library/Homebrew/env_config.rb        |  5 -----
 docs/Installation.md                  |  2 --
 4 files changed, 1 insertion(+), 25 deletions(-)

diff --git a/Library/Homebrew/brew.sh b/Library/Homebrew/brew.sh
index 2914192a1b31b..9710cf1ad43a6 100644
--- a/Library/Homebrew/brew.sh
+++ b/Library/Homebrew/brew.sh
@@ -533,8 +533,6 @@ then
   # shellcheck disable=SC2086,SC2183
   printf -v HOMEBREW_MACOS_VERSION_NUMERIC "%02d%02d%02d" ${HOMEBREW_MACOS_VERSION//./ }
   # shellcheck disable=SC2248
-  printf -v HOMEBREW_MACOS_OLDEST_SUPPORTED_NUMERIC "%02d%02d%02d" ${HOMEBREW_MACOS_OLDEST_SUPPORTED//./ }
-  # shellcheck disable=SC2248
   printf -v HOMEBREW_MACOS_OLDEST_ALLOWED_NUMERIC "%02d%02d%02d" ${HOMEBREW_MACOS_OLDEST_ALLOWED//./ }
 
   # Don't include minor versions for Big Sur and later.
@@ -593,13 +591,6 @@ then
     # shellcheck disable=SC2034
     HOMEBREW_MACOS_SYSTEM_RUBY_NEW_ENOUGH="1"
   fi
-
-  # Don't support API at this time for older macOS versions.
-  if [[ "${HOMEBREW_MACOS_VERSION_NUMERIC}" -lt "${HOMEBREW_MACOS_OLDEST_SUPPORTED_NUMERIC}" ]]
-  then
-    export HOMEBREW_INSTALL_FROM_API_UNSUPPORTED=1
-    export HOMEBREW_NO_INSTALL_FROM_API=1
-  fi
 else
   HOMEBREW_PRODUCT="${HOMEBREW_SYSTEM}brew"
   [[ -n "${HOMEBREW_LINUX}" ]] && HOMEBREW_OS_VERSION="$(source /etc/os-release && echo "${PRETTY_NAME}")"
@@ -672,13 +663,6 @@ Your Git executable: $(unset git && type -p "${HOMEBREW_GIT}")"
   fi
 fi
 
-# Generic OS or non-default prefix: API not supported.
-if [[ (-z "${HOMEBREW_MACOS}" && -z "${HOMEBREW_LINUX}") || "${HOMEBREW_PREFIX}" != "${HOMEBREW_DEFAULT_PREFIX}" ]]
-then
-  export HOMEBREW_INSTALL_FROM_API_UNSUPPORTED=1
-  export HOMEBREW_NO_INSTALL_FROM_API=1
-fi
-
 setup_ca_certificates() {
   if [[ -n "${HOMEBREW_FORCE_BREWED_CA_CERTIFICATES}" && -f "${HOMEBREW_PREFIX}/etc/ca-certificates/cert.pem" ]]
   then
diff --git a/Library/Homebrew/cmd/update-report.rb b/Library/Homebrew/cmd/update-report.rb
index 0f970d442ebcd..2f06c84c2d8a5 100644
--- a/Library/Homebrew/cmd/update-report.rb
+++ b/Library/Homebrew/cmd/update-report.rb
@@ -377,8 +377,7 @@ def install_from_api_message
                          !ENV["HOMEBREW_GITHUB_HOSTED_RUNNER"] &&
                          !ENV["GITHUB_ACTIONS_HOMEBREW_SELF_HOSTED"]
     no_install_from_api_set = Homebrew::EnvConfig.no_install_from_api? &&
-                              !Homebrew::EnvConfig.automatically_set_no_install_from_api? &&
-                              !Homebrew::EnvConfig.install_from_api_unsupported?
+                              !Homebrew::EnvConfig.automatically_set_no_install_from_api?
     return if !no_auto_update_set && !no_install_from_api_set && !auto_update_secs_set
 
     ohai "You have set:"
diff --git a/Library/Homebrew/env_config.rb b/Library/Homebrew/env_config.rb
index b3784b8711fc7..431451e7d7be2 100644
--- a/Library/Homebrew/env_config.rb
+++ b/Library/Homebrew/env_config.rb
@@ -498,10 +498,5 @@ def cask_opts_require_sha?
     def automatically_set_no_install_from_api?
       ENV["HOMEBREW_AUTOMATICALLY_SET_NO_INSTALL_FROM_API"].present?
     end
-
-    sig { returns(T::Boolean) }
-    def install_from_api_unsupported?
-      ENV["HOMEBREW_INSTALL_FROM_API_UNSUPPORTED"].present?
-    end
   end
 end
diff --git a/docs/Installation.md b/docs/Installation.md
index d79873a49cb0c..418a5013caf9b 100644
--- a/docs/Installation.md
+++ b/docs/Installation.md
@@ -38,8 +38,6 @@ export HOMEBREW_NO_INSTALL_FROM_API=1
 
 This will make Homebrew install formulae and casks from the `homebrew/core` and `homebrew/cask` taps using local checkouts of these repositories instead of Homebrew’s API.
 
-Note that this will automatically be set on unsupported configurations (i.e. not using the default Homebrew prefix or, if on macOS, on an unsupported version).
-
 ## Unattended installation
 
 If you want a non-interactive run of the Homebrew installer that doesn't prompt for passwords (e.g. in automation scripts), prepend [`NONINTERACTIVE=1`](https://github.com/Homebrew/install/#install-homebrew-on-macos-or-linux) to the installation command.