Update msys2-build.yml

Author: SirLynix

.github/workflows/msys2-build.yml

@@ -50,12 +50,19 @@ jobs:
     - uses: msys2/setup-msys2@v2
       with:
         msystem: ${{ matrix.msystem }}
-        install: base-devel git unzip p7zip mingw-w64-${{ matrix.arch }}-toolchain mingw-w64-${{ matrix.arch }}-xmake
+        install: base-devel git unzip p7zip mingw-w64-${{ matrix.arch }}-toolchain
         update: true
 
     # Update xmake to nightly (fixes a bug in xmake 2.9.1)
-    - name: Update xmake to dev
-      run: xmake update -s dev
+    - name: Install xmake dev
+      shell: msys2 {0}
+      run: |
+        git clone https://github.com/xmake-io/xmake.git --recurse-submodules -b dev
+        cd xmake
+        ./configure
+        make -j4
+        make install PREFIX=/${{ matrix.msystem }}
+        xmake --version
 
     # Force xmake to a specific folder (for cache)
     - name: Set xmake env