diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
new file mode 100644
index 0000000..14e22b7
--- /dev/null
+++ b/.github/workflows/build.yml
@@ -0,0 +1,47 @@
+name: build and test
+
+on:
+  push:
+    branches: ["main"]
+  pull_request:
+    branches: ["main"]
+
+permissions:
+  contents: read
+
+jobs:
+  build:
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+        dc: [dmd-latest, ldc-latest]
+        exclude:
+          - os: macos-latest
+            dc: dmd-latest
+          - os: windows-latest
+            dc: ldc-latest
+
+    runs-on: ${{ matrix.os }}
+
+    steps:
+      - name: Checkout Source
+        uses: actions/checkout@v6
+
+      - name: D Compiler Installation
+        uses: dlang-community/setup-dlang@v2
+        with:
+          compiler: ${{ matrix.dc }}
+
+      - name: Build and Test
+        run: |
+          dub -q test
+
+      - name: Build Demos
+        shell: bash
+        run: |
+          for demo in clipboard colors hello mouse styles;
+          do
+            cd demos/$demo
+            dub build || exit 1
+            cd ../..
+          done
diff --git a/.github/workflows/dmd.yml b/.github/workflows/dmd.yml
deleted file mode 100644
index 08c511d..0000000
--- a/.github/workflows/dmd.yml
+++ /dev/null
@@ -1,32 +0,0 @@
-name: dmd
-
-on:
-  push:
-    branches: ["main"]
-  pull_request:
-    branches: ["main"]
-
-permissions:
-  contents: read
-
-jobs:
-  build:
-    strategy:
-      matrix:
-        os: [ubuntu-latest, windows-latest]
-        dc: [dmd-latest]
-
-    runs-on: ${{ matrix.os }}
-
-    steps:
-      - name: Checkout Source
-        uses: actions/checkout@v6
-
-      - name: D Compiler Installation
-        uses: dlang-community/setup-dlang@v2
-        with:
-          compiler: ${{ matrix.dc }}
-
-      - name: Build and Test
-        run: |
-          dub -q test
diff --git a/.github/workflows/ldc.yml b/.github/workflows/ldc.yml
deleted file mode 100644
index ffecd39..0000000
--- a/.github/workflows/ldc.yml
+++ /dev/null
@@ -1,32 +0,0 @@
-name: ldc
-
-on:
-  push:
-    branches: ["main"]
-  pull_request:
-    branches: ["main"]
-
-permissions:
-  contents: read
-
-jobs:
-  build:
-    strategy:
-      matrix:
-        os: [ubuntu-latest, macos-latest]
-        dc: [ldc-latest]
-
-    runs-on: ${{ matrix.os }}
-
-    steps:
-      - name: Checkout Source
-        uses: actions/checkout@v6
-
-      - name: D Compiler Installation
-        uses: dlang-community/setup-dlang@v2
-        with:
-          compiler: ${{ matrix.dc }}
-
-      - name: Build and Test
-        run: |
-          dub -q test