Add support for e.g. brew bundle env --install

cmd/bundle.rb

@@ -84,6 +84,8 @@ class BundleCmd < AbstractCommand
         switch "--upgrade",
                description: "`install` runs `brew upgrade` on outdated dependencies, " \
                             "even if `$HOMEBREW_BUNDLE_NO_UPGRADE` is set. "
+        switch "--install",
+               description: "Run `install` before continuing to other operations e.g. `exec`."
         switch "-f", "--force",
                description: "`install` runs with `--force`/`--overwrite`. " \
                             "`dump` overwrites an existing `Brewfile`. " \
@@ -93,9 +95,6 @@ class BundleCmd < AbstractCommand
                description: "`install` performs cleanup operation, same as running `cleanup --force`. " \
                             "This is enabled by default if `$HOMEBREW_BUNDLE_INSTALL_CLEANUP` is set and " \
                             "`--global` is passed."
-        switch "--no-lock",
-               description: "no-op since `Brewfile.lock.json` was removed.",
-               hidden:      true
         switch "--all",
                description: "`list` all dependencies."
         switch "--formula", "--brews",
@@ -126,6 +125,7 @@ class BundleCmd < AbstractCommand
 
         conflicts "--all", "--no-vscode"
         conflicts "--vscode", "--no-vscode"
+        conflicts "--install", "--upgrade"
 
         named_args %w[install dump cleanup check exec list sh env edit]
       end
@@ -154,13 +154,17 @@ def run
 
         no_type_args = !args.brews? && !args.casks? && !args.taps? && !args.mas? && !args.whalebrew? && !args.vscode?
 
+        if args.install?
+          if [nil, "install", "upgrade"].include?(subcommand)
+            raise UsageError, "`--install` cannot be used with `install`, `upgrade` or no subcommand."
+          end
+
+          Bundle::Commands::Install.run(global:, file:, no_upgrade:, verbose:, force:, quiet: true)
+        end
+
         case subcommand
         when nil, "install", "upgrade"
-          Bundle::Commands::Install.run(
-            global:, file:, no_upgrade:, verbose:, force:,
-            no_lock:    args.no_lock?,
-            quiet:      args.quiet?
-          )
+          Bundle::Commands::Install.run(global:, file:, no_upgrade:, verbose:, force:, quiet: args.quiet?)
 
           cleanup = if ENV.fetch("HOMEBREW_BUNDLE_INSTALL_CLEANUP", nil)
             args.global?
@@ -202,6 +206,7 @@ def run
         when "check"
           Bundle::Commands::Check.run(global:, file:, no_upgrade:, verbose:)
         when "exec", "sh", "env"
+          env = false
           named_args = case subcommand
           when "exec"
             _subcommand, *named_args = args.named
@@ -220,9 +225,10 @@ def run
             ENV["HOMEBREW_FORCE_API_AUTO_UPDATE"] = nil
             [subshell]
           when "env"
+            env = true
             ["env"]
           end
-          Bundle::Commands::Exec.run(*named_args, global:, file:)
+          Bundle::Commands::Exec.run(*named_args, global:, file:, env:)
         when "list"
           Bundle::Commands::List.run(
             global:,

cmd/bundle.rbi

@@ -37,10 +37,10 @@ class Homebrew::Cmd::BundleCmd::Args < Homebrew::CLI::Args
   def global?; end
 
   sig { returns(T::Boolean) }
-  def mas?; end
+  def install?; end
 
   sig { returns(T::Boolean) }
-  def no_lock?; end
+  def mas?; end
 
   sig { returns(T::Boolean) }
   def no_restart?; end

lib/bundle/commands/exec.rb

@@ -10,7 +10,7 @@ module Commands
     module Exec
       module_function
 
-      def run(*args, global: false, file: nil)
+      def run(*args, global: false, file: nil, env: false)
         # Setup Homebrew's ENV extensions
         ENV.activate_extensions!
         raise UsageError, "No command to execute was specified!" if args.blank?
@@ -88,6 +88,13 @@ def run(*args, global: false, file: nil)
           end
         end
 
+        if env
+          ENV.each do |key, value|
+            puts "export #{key}=\"#{value}\""
+          end
+          return
+        end
+
         exec(*args)
       end
     end

lib/bundle/installer.rb

@@ -64,8 +64,11 @@ def install(entries, global: false, file: nil, no_lock: false, no_upgrade: false
         return false
       end
 
-      puts Formatter.success "Homebrew Bundle complete! " \
-                             "#{success} Brewfile #{Bundle::Dsl.pluralize_dependency(success)} now installed."
+      unless quiet
+        puts Formatter.success "Homebrew Bundle complete! " \
+                               "#{success} Brewfile #{Bundle::Dsl.pluralize_dependency(success)} now installed."
+      end
+
       true
     end
   end

spec/bundle/commands/exec_command_spec.rb

@@ -49,6 +49,15 @@
       end
     end
 
+    context "with env command" do
+      it "outputs the environment variables" do
+        ENV["HOMEBREW_PREFIX"] = "/opt/homebrew"
+
+        expect { described_class.run("env", env: true) }.to \
+          output(/HOMEBREW_PREFIX="#{ENV.fetch("HOMEBREW_PREFIX")}"/).to_stdout
+      end
+    end
+
     it "raises if called with a command that's not on the PATH" do
       allow(described_class).to receive_messages(exec: nil, which: nil)
       expect { described_class.run("bundle", "install") }.to raise_error(RuntimeError)