how to make the newest dart sdk path relate with brew - flutter

Question

Because the homebrew did not upload the formula https://github.com/dart-lang/homebrew-dart/issues/111, I have to install the newest version of dart sdk from binary file. Now I download the dart 2.18 sdk and unzip to the brew folder /usr/local/Cellar/dart/2.18, the next step I want to change the default dart link from 2.14 to 2.18, what should I do? when I using this command to install fvm , it still shows info like this:
$ brew install fvm --verbose ‹ruby-2.7.2›
==> Downloading https://github.com/fluttertools/fvm/archive/2.4.1.tar.gz
Already downloaded: /Users/dolphin/Library/Caches/Homebrew/downloads/54b77538c3b1241d7203cf322d4c29f344917cfacab6f1f19203cff6dc2390e4--fvm-2.4.1.tar.gz
==> Verifying checksum for '54b77538c3b1241d7203cf322d4c29f344917cfacab6f1f19203cff6dc2390e4--fvm-2.4.1.tar.gz'
==> Installing fvm from leoafarias/fvm
tar --extract --no-same-owner --file /Users/dolphin/Library/Caches/Homebrew/downloads/54b77538c3b1241d7203cf322d4c29f344917cfacab6f1f19203cff6dc2390e4--fvm-2.4.1.tar.gz --directory /private/tmp/d20220904-90376-f5ukje
cp -pR /private/tmp/d20220904-90376-f5ukje/fvm-2.4.1/. /private/tmp/fvm-20220904-90376-1wohnah/fvm-2.4.1
chmod -Rf +w /private/tmp/d20220904-90376-f5ukje
==> /usr/local/Cellar/dart/2.14.4/libexec/bin/dart pub get
Resolving dependencies...
The current Dart SDK version is 2.14.4.
Because fvm requires SDK version >=2.17.0 <3.0.0, version solving failed.
==> Formula
Tap: leoafarias/fvm
Path: /usr/local/Homebrew/Library/Taps/leoafarias/homebrew-fvm/fvm.rb
==> Configuration
HOMEBREW_VERSION: 3.5.2
ORIGIN: https://mirrors.tuna.tsinghua.edu.cn/git/homebrew/brew.git
HEAD: fba051f98f609634ae4392d0053ddfc627f8cdb3
Last commit: 3 months ago
Core tap ORIGIN: https://mirrors.tuna.tsinghua.edu.cn/git/homebrew/homebrew-core.git
Core tap HEAD: 62deae70c8cc3f62ca5e83e3ba9caf2c44a01024
Core tap last commit: 2 months ago
Core tap branch: master
HOMEBREW_PREFIX: /usr/local
HOMEBREW_CASK_OPTS: []
HOMEBREW_CORE_GIT_REMOTE: https://github.com/Homebrew/homebrew-core
HOMEBREW_DISPLAY: /private/tmp/com.apple.launchd.m000Ess6zj/org.macosforge.xquartz:0
HOMEBREW_MAKE_JOBS: 12
HOMEBREW_NO_AUTO_UPDATE: set
Homebrew Ruby: 2.6.8 => /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/bin/ruby
CPU: dodeca-core 64-bit kabylake
Clang: 13.1.6 build 1316
Git: 2.33.0 => /usr/local/bin/git
Curl: 7.79.1 => /usr/bin/curl
macOS: 12.5.1-x86_64
CLT: 13.4.0.0.1.1651278267
Xcode: 13.4.1
==> ENV
HOMEBREW_CC: clang
HOMEBREW_CXX: clang++
MAKEFLAGS: -j12
CMAKE_PREFIX_PATH: /usr/local
CMAKE_INCLUDE_PATH: /Library/Developer/CommandLineTools/SDKs/MacOSX12.sdk/System/Library/Frameworks/OpenGL.framework/Versions/Current/Headers
CMAKE_LIBRARY_PATH: /Library/Developer/CommandLineTools/SDKs/MacOSX12.sdk/System/Library/Frameworks/OpenGL.framework/Versions/Current/Libraries
PKG_CONFIG_LIBDIR: /usr/lib/pkgconfig:/usr/local/Homebrew/Library/Homebrew/os/mac/pkgconfig/12
HOMEBREW_GIT: git
HOMEBREW_SDKROOT: /Library/Developer/CommandLineTools/SDKs/MacOSX12.sdk
ACLOCAL_PATH: /usr/local/share/aclocal
PATH: /usr/local/Homebrew/Library/Homebrew/shims/mac/super:/usr/local/opt/dart/bin:/usr/bin:/bin:/usr/sbin:/sbin
Error: leoafarias/fvm/fvm 2.4.1 did not build
Logs:
/Users/dolphin/Library/Logs/Homebrew/fvm/00.options.out
/Users/dolphin/Library/Logs/Homebrew/fvm/01.dart
If reporting this issue please do so at (not Homebrew/brew or Homebrew/core):
https://github.com/leoafarias/homebrew-fvm/issues
what should I do to switch the dart sdk link from 2.14 to the 2.18 path?