Okay, I guess we need the full path?

Author: absurdfarce

.github/workflows/test.yml

@@ -17,7 +17,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: ilammy/msvc-dev-cmd@v1
       - name: Install dependencies
-        run: pacman -S libuv libuv-devel zlib zlib-devel heimdal-libs mingw-w64-x86_64-ntldd
+        run: C:\msys64\pacman -S libuv libuv-devel zlib zlib-devel heimdal-libs mingw-w64-x86_64-ntldd
       - name: Build and run tests
         run: |
           mkdir build