Let GitHub Actions use goto-bus-stop/setup-zig

Author: joachimschmidt557

.github/workflows/main.yml

@@ -1,26 +1,27 @@
 name: CI
+
 on:
   push:
     paths:
     - '**.zig'
   pull_request:
     paths:
     - '**.zig'
+  schedule:
+    - cron: '0 0 * * *'
 
 jobs:
-  build:
-    runs-on: ubuntu-latest
+  test:
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+    runs-on: ${{ matrix.os }}
     steps:
-    - uses: actions/checkout@v1
-    - name: install software
-      run: |
-        ZIG=$(wget --quiet --output-document=- https://ziglang.org/download/index.json | jq --raw-output '.master."x86_64-linux".tarball')
-        echo installing $ZIG into ./zig/
-        wget --quiet --output-document=- $ZIG | tar Jx
-        mv zig-linux-x86_64-* zig
-        echo zig version $(./zig/zig version)
-        git submodule update --init --recursive
-    - name: build
-      run: |
-        export PATH=./zig:$PATH
-        zig build test
+    - uses: actions/checkout@v2
+      with:
+        submodules: true
+    - uses: goto-bus-stop/setup-zig@v1
+      with:
+        version: master
+    - name: Build
+      run: zig build test