diff --git a/.github/workflows/nix.yml b/.github/workflows/nix.yml
index 32b16206b2..3a78116993 100644
--- a/.github/workflows/nix.yml
+++ b/.github/workflows/nix.yml
@@ -17,24 +17,13 @@ jobs:
       - name: Pull musl
         run: |
             git submodule update --init lib/musl
-      - name: Restore LLVM source cache
-        uses: actions/cache/restore@v4
-        id: cache-llvm-source
-        with:
-          key: llvm-source-18-linux-nix-v1
-          path: |
-            llvm-project/compiler-rt
       - name: Download LLVM source
-        if: steps.cache-llvm-source.outputs.cache-hit != 'true'
         run: make llvm-source
-      - name: Save LLVM source cache
-        uses: actions/cache/save@v4
-        if: steps.cache-llvm-source.outputs.cache-hit != 'true'
-        with:
-          key: ${{ steps.cache-llvm-source.outputs.cache-primary-key }}
-          path: |
-            llvm-project/compiler-rt
       - uses: cachix/install-nix-action@v22
-      - name: Test
+      - name: Build
         run: |
-          nix develop --ignore-environment --keep HOME --command bash -c "go install && ~/go/bin/tinygo version && ~/go/bin/tinygo build -o test ./testdata/cgo"
+          nix develop --ignore-environment --keep HOME --command bash -c "go build ."
+      - uses: cachix/install-nix-action@v22
+        with:
+          name: upload
+          path: "/home/runner/go/bin/tinygo"
diff --git a/flake.nix b/flake.nix
index 25ffc70205..63cb551a1f 100644
--- a/flake.nix
+++ b/flake.nix
@@ -77,7 +77,7 @@
             export MD5SUM=md5sum
 
             # Ugly hack to make the Clang resources directory available.
-            export GOFLAGS="\"-ldflags=-X github.com/tinygo-org/tinygo/goenv.clangResourceDir=${llvmPackages_18.clang.cc.lib}/lib/clang/18\" -tags=llvm18"
+            #export GOFLAGS="\"-ldflags=-X github.com/tinygo-org/tinygo/goenv.clangResourceDir=${llvmPackages_18.clang.cc.lib}/lib/clang/18\" -tags=llvm18"
           '';
         };
       }