diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 72ecf965..f21d5d6d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -1,15 +1,18 @@
 name: ci
-on:
-  push:
-    branches: [ "main" ]
-  pull_request:
-    branches: [ "main" ]
-  workflow_dispatch:
+on: [push, pull_request]
 jobs:
-  build:
+  linux:
     runs-on: ubuntu-22.04
     steps:
       - uses: actions/checkout@v3
       - name: Run a one-line script
         run: ./ci.sh
 
+  macos:
+    runs-on: macos-12
+    steps:
+      - uses: actions/checkout@v3
+      - name: Run a one-line script
+        shell: bash
+        run: ./ci.sh
+
diff --git a/ci.sh b/ci.sh
index 49f971b3..e09d926d 100755
--- a/ci.sh
+++ b/ci.sh
@@ -12,24 +12,31 @@ main() {
     maybe_sudo="sudo"
   fi
 
+  local os
+  os="$(uname)"
   if ! available autopep8; then
-     if available apt; then
-	 $maybe_sudo apt install -y python3-autopep8
-     else
-	 $maybe_sudo dnf install -y python3-autopep8
-     fi
+    if [ "$os" = "Linux" ]; then
+      if available apt; then
+        $maybe_sudo apt install -y python3-autopep8
+      else
+        $maybe_sudo dnf install -y python3-autopep8
+      fi
+    fi
   fi
 
-  ./container_build.sh
-  curl -fsSL https://raw.githubusercontent.com/containers/ramalama/main/install.sh | sudo bash
+  chmod +x ramalama install.sh
+  if [ "$os" = "Linux" ]; then
+    ./container_build.sh
+    $maybe_sudo ./install.sh # todo macos support
+    autopep8 --exit-code ramalama # Check style is correct
+    shellcheck -- *.sh
+  fi
 
   set +o pipefail
-  chmod +x ramalama
   ./ramalama -h | grep Usage:
   set -o pipefail
 
   ./ramalama pull tinyllama
-  autopep8 --exit-code ramalama # Check style is correct
 #  ramalama list | grep granite-code
 #  ramalama rm granite-code
 }
diff --git a/install.sh b/install.sh
index 9a02588f..f0593d8e 100755
--- a/install.sh
+++ b/install.sh
@@ -16,22 +16,6 @@ amd_lshw() {
   lshw -c display -numeric -disable network | grep -q 'vendor: .* \[1002\]'
 }
 
-gpu_check() {
-  if available lspci && lspci -d '10de:' | grep -q 'NVIDIA'; then
-    nvidia_available="true"
-  elif available lshw && nvidia_lshw; then
-    nvidia_available="true"
-  elif available nvidia-smi; then
-    nvidia_available="true"
-  fi
-
-  if available lspci && lspci -d '1002:' | grep -q 'AMD'; then
-    amd_available="true"
-  elif available lshw && amd_lshw; then
-    amd_available="true"
-  fi
-}
-
 download() {
   local curl_cmd=("curl" "--globoff" "--location" "--proto-default" "https")
   curl_cmd+=("-o" "$from" "--remote-time" "--retry" "10" "--retry-max-time")
@@ -68,8 +52,6 @@ main() {
   install -D -m755 "$from" "$bindir/"
 
   if false; then # to be done
-    local nvidia_available="false"
-    local amd_available="false"
     gpu_check
   fi
 }