Update README to reflect the current compilation script

README.md

@@ -12,11 +12,10 @@ This repo contains custom mpv and ffmpeg homebrew tap for IINA.
 - Removed some of the decoding libraries which ffmpeg can natively decode
 
 ### other/compile.rb
-You do not have to use this script in most cases. The libraries that IINA ships are compiled by `other/compile.rb`. Although this script actually runs homebrew command to compile the dependencies and libraries that IINA needs, unlike the libraries you get by installing mpv (or mpv-iina) using homebrew directly, this script:
+You do not have to use this script in most cases. The libraries that IINA ships are compiled by `other/compile.rb`. All the dependencies of mpv-iina (and mpv-iina itself) is installed to the standard homebrew dirs. Each library is installed via
+```bash
+brew reinstall {package name} --build-from-source
+```
 
-- Compile all IINA dependencies with `MACOSX_DEPLOTMENT_TARGET=10.11` to be compatible with OS X 10.11. This is done by patching homebrew (see `other/homebrew.patch`) before compiling and disable homebrew auto update.
-- Add `--build-bottle` option to homebrew when compiling to keep compatibility for some older architecture. See https://github.com/iina/iina/issues/1660 .
+Note that this script no longer inject `MACOSX_DEPLOYMENT_TARGET` to the env of homebrew during compile time. All libraries are targeted to the compiling system. So, in order to support a lower version of macOS, please run this script on that specific version of macOS. This script was tested on macOS 10.15 (x86) and macOS 12 (arm).
 
-- Patch Python before compiling harfbuzz to prevent Python from throwing errors complaining `$MACOSX_DEPLOYMENT_TARGET mismatch`. See https://stackoverflow.com/a/13315980 .
-
-**Important** This script automatically reverts changes to homebrew before exiting, but does not restore Python to its original state. Please reinstall Python from homebrew after running this script if you want to use a clean Python.