Update build.yml

Author: p-web-git

.github/workflows/build.yml

@@ -32,11 +32,10 @@ jobs:
           export CC="$ANDROID_NDK/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android24-clang"
           export CXX="$ANDROID_NDK/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android24-clang++"
           export GOOS=android GOARCH=arm64 CGO_ENABLED=1
+          # crucial: GOBIN must be unset for cross installs
+          env -u GOBIN go install -tags netcgo github.com/kopia/kopia@v0.21.1
           mkdir -p out
-          # Use go build (NOT go install) to avoid the GOBIN/cross-compile restriction.
-          go build -tags netcgo -trimpath -ldflags="-s -w" \
-            -o out/kopia github.com/kopia/kopia@v0.21.1
-          file out/kopia
+          cp "$(go env GOPATH)/bin/kopia" out/kopia
 
       - name: Upload Android binary
         uses: actions/upload-artifact@v4