Merge pull request #12333 from Rylan12/install-from-api-fixes

`HOMEBREW_INSTALL_FROM_API` fixes

Library/Homebrew/cmd/install.rb

@@ -138,6 +138,7 @@ module Homebrew
     end
 
     args.named.each do |name|
+      next if EnvConfig.install_from_api?
       next if File.exist?(name)
       next if name !~ HOMEBREW_TAP_FORMULA_REGEX && name !~ HOMEBREW_CASK_TAP_CASK_REGEX
 

Library/Homebrew/diagnostic.rb

@@ -591,6 +591,8 @@ module Homebrew
 
       def check_coretap_integrity
         coretap = CoreTap.instance
+        return if !coretap.installed? && EnvConfig.install_from_api?
+
         broken_tap(coretap) || examine_git_origin(coretap.path, Homebrew::EnvConfig.core_git_remote)
       end
 
@@ -722,6 +724,8 @@ module Homebrew
         end
 
         repos.each do |name, path|
+          next unless path.exist?
+
           status = path.cd do
             `git status --untracked-files=all --porcelain 2>/dev/null`
           end
@@ -877,11 +881,13 @@ module Homebrew
       end
 
       def check_deleted_formula
-        keg_names = Keg.all.map(&:name).uniq
+        kegs = Keg.all
 
-        deleted_formulae = keg_names.map do |keg_name|
-          keg_name if Formulary.tap_paths(keg_name).blank?
-        end.compact
+        deleted_formulae = kegs.map do |keg|
+          next if !CoreTap.instance.installed? && EnvConfig.install_from_api? && Tab.for_keg(keg).tap.core_tap?
+
+          keg.name if Formulary.tap_paths(keg.name).blank?
+        end.compact.uniq
 
         return if deleted_formulae.blank?
 

Library/Homebrew/env_config.rb

@@ -191,7 +191,9 @@ module Homebrew
       },
       HOMEBREW_INSTALL_FROM_API:               {
         description: "If set, install formulae and casks in homebrew/core and homebrew/cask taps using Homebrew's " \
-                     "API instead of needing (large, slow) local checkouts of these repositories.",
+                     "API instead of needing (large, slow) local checkouts of these repositories." \
+                     "\n\n    *Note:* Setting HOMEBREW_INSTALL_FROM_API is not compatible with Homebrew's " \
+                     "developer mode so will error (as Homebrew development needs a full clone).",
         boolean:     true,
       },
       HOMEBREW_LIVECHECK_WATCHLIST:            {

docs/Manpage.md

@@ -2032,6 +2032,8 @@ example, run `export HOMEBREW_NO_INSECURE_REDIRECT=1` rather than just
 - `HOMEBREW_INSTALL_FROM_API`
   <br>If set, install formulae and casks in homebrew/core and homebrew/cask taps using Homebrew's API instead of needing (large, slow) local checkouts of these repositories.
 
+    *Note:* Users with developer mode enabled cannot set HOMEBREW_INSTALL_FROM_API.
+
 - `HOMEBREW_LIVECHECK_WATCHLIST`
   <br>Consult this file for the list of formulae to check by default when no formula argument is passed to `brew livecheck`.
 

manpages/brew.1

@@ -2933,6 +2933,9 @@ Print this text before the installation summary of each successful build\.
 .br
 If set, install formulae and casks in homebrew/core and homebrew/cask taps using Homebrew\'s API instead of needing (large, slow) local checkouts of these repositories\.
 .
+.IP
+\fINote:\fR Users with developer mode enabled cannot set HOMEBREW_INSTALL_FROM_API\.
+.
 .TP
 \fBHOMEBREW_LIVECHECK_WATCHLIST\fR
 .