Launch elf interpreter explictly on nixos

Author: ntkme

exe/sass

@@ -6,15 +6,7 @@ require_relative '../ext/sass/cli'
 module Sass
   # The `sass` command line interface
   module CLI
-    begin
-      Kernel.exec(*COMMAND, *ARGV)
-    rescue Errno::ENOENT
-      require_relative '../lib/sass/elf'
-
-      raise if ELF::INTERPRETER.nil?
-
-      Kernel.exec(ELF::INTERPRETER, *COMMAND, *ARGV)
-    end
+    Kernel.exec(*COMMAND, *ARGV)
   end
 
   private_constant :CLI

ext/sass/Rakefile

@@ -53,9 +53,20 @@ file 'cli.rb' => %w[dart-sass] do |t|
   File.write(t.name, <<~CLI_RB)
     # frozen_string_literal: true
 
+    require_relative '../../lib/sass/elf'
+
     module Sass
+      # The [CLI] module.
       module CLI
-        COMMAND = [#{command}].freeze
+        command = [#{command}]
+
+        command.unshift(ELF::INTERPRETER) unless ELF::INTERPRETER.nil? || File.open(command[0], 'rb') do |file|
+          File.exist?(ELF.new(file).interpreter)
+        rescue StandardError
+          false
+        end
+
+        COMMAND = command.freeze
       end
 
       private_constant :CLI

lib/sass/compiler/connection.rb

@@ -12,15 +12,7 @@ class Compiler
     class Connection
       def initialize
         @mutex = Mutex.new
-        @stdin, @stdout, @stderr, @wait_thread = begin
-          Open3.popen3(*CLI::COMMAND, '--embedded', chdir: __dir__)
-        rescue Errno::ENOENT
-          require_relative '../elf'
-
-          raise if ELF::INTERPRETER.nil?
-
-          Open3.popen3(ELF::INTERPRETER, *CLI::COMMAND, '--embedded', chdir: __dir__)
-        end
+        @stdin, @stdout, @stderr, @wait_thread = Open3.popen3(*CLI::COMMAND, '--embedded', chdir: __dir__)
 
         @stdin.binmode