2 files changed, 5 insertions, 8 deletions
diff --git a/Library/Homebrew/cask/lib/hbc/artifact/installer.rb b/Library/Homebrew/cask/lib/hbc/artifact/installer.rb
index 5cd388c7f..8fa54c01e 100644
--- a/Library/Homebrew/cask/lib/hbc/artifact/installer.rb
+++ b/Library/Homebrew/cask/lib/hbc/artifact/installer.rb
@@ -23,7 +23,7 @@ module Hbc
         def install_phase(command: nil, **_)
           ohai "Running #{self.class.dsl_key} script '#{path.relative_path_from(cask.staged_path)}'"
           FileUtils.chmod "+x", path unless path.executable?
-          command.run(path, **args)
+          command.run(path, **args, path: PATH.new(HOMEBREW_PREFIX/"bin", HOMEBREW_PREFIX/"sbin", ENV["PATH"]))
         end
       end
 
diff --git a/Library/Homebrew/cask/lib/hbc/system_command.rb b/Library/Homebrew/cask/lib/hbc/system_command.rb
index a890c42e4..dfb301999 100644
--- a/Library/Homebrew/cask/lib/hbc/system_command.rb
+++ b/Library/Homebrew/cask/lib/hbc/system_command.rb
@@ -37,7 +37,7 @@ module Hbc
       result
     end
 
-    def initialize(executable, args: [], sudo: false, input: [], print_stdout: false, print_stderr: true, must_succeed: false, **options)
+    def initialize(executable, args: [], sudo: false, input: [], print_stdout: false, print_stderr: true, must_succeed: false, path: ENV["PATH"], **options)
       @executable = executable
       @args = args
       @sudo = sudo
@@ -47,6 +47,7 @@ module Hbc
       @must_succeed = must_succeed
       options.extend(HashValidator).assert_valid_keys(:chdir)
       @options = options
+      @path = path
     end
 
     def command
@@ -55,7 +56,7 @@ module Hbc
 
     private
 
-    attr_reader :executable, :args, :input, :options, :processed_output, :processed_status
+    attr_reader :executable, :args, :input, :options, :processed_output, :processed_status, :path
 
     attr_predicate :sudo?, :print_stdout?, :print_stderr?, :must_succeed?
 
@@ -83,12 +84,8 @@ module Hbc
     def each_output_line(&b)
       executable, *args = expanded_command
 
-      unless File.exist?(executable)
-        executable = which(executable, PATH.new(ENV["PATH"], HOMEBREW_PREFIX/"bin"))
-      end
-
       raw_stdin, raw_stdout, raw_stderr, raw_wait_thr =
-        Open3.popen3([executable, executable], *args, **options)
+        Open3.popen3({ "PATH" => path }, executable, *args, **options)
 
       write_input_to(raw_stdin)
       raw_stdin.close_write