From e234fb7542195f7a6e656708d17b0d0c1935d739 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?fn=20=E2=8C=83=20=E2=8C=A5?=
 <70830482+FnControlOption@users.noreply.github.com>
Date: Mon, 2 Jan 2023 14:10:17 -0800
Subject: [PATCH] formula_installer: check if dependencies have already been
 fetched.

Given a `pkg_a` that depends on `pkg_b`, it is redundant to list
`pkg_b` as a dependency when running the following commands:

- `brew install pkg_b pkg_a`
- `brew upgrade` (when both `pkg_a` and `pkg_b` are outdated)
---
 Library/Homebrew/formula_installer.rb | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Library/Homebrew/formula_installer.rb b/Library/Homebrew/formula_installer.rb
index b4eba15ae2..fe2ef1402a 100644
--- a/Library/Homebrew/formula_installer.rb
+++ b/Library/Homebrew/formula_installer.rb
@@ -1156,7 +1156,10 @@ class FormulaInstaller
   def fetch_dependencies
     return if ignore_deps?
 
-    deps = compute_dependencies
+    deps = compute_dependencies.reject do |dep, _options|
+      self.class.fetched.include?(dep.to_formula)
+    end
+
     return if deps.empty?
 
     oh1 "Fetching dependencies for #{formula.full_name}: " \