Add zig-0.14 testing back to CI (for #166)

Splits the CI and makefile "test" target to test_zig_nightly and test_zig_014.  The latter
target has a smaller test plan that's easier to support with both zig-0.14 and zig-dev

The test plan difference is currently:

- don't test lua 5.1
- don't test luajit (breaks on Windows, might work on other platforms)

Author: nurpax

.github/workflows/tests.yml

@@ -7,7 +7,8 @@ on:
     branches: [ "main" ]
 
 jobs:
-  test:
+  #------ zig-dev builds ------
+  test_zig_nightly:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest, ubuntu-24.04-arm]
@@ -24,8 +25,29 @@ jobs:
         version: master
 
     - name: Run tests
-      run: make test
+      run: make test_zig_nightly
 
+  #------ zig-0.14 ------
+  test_zig_014:
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest, ubuntu-24.04-arm]
+
+    runs-on: ${{matrix.os}}
+
+    steps:
+    - name: Clone Ziglua
+      uses: actions/checkout@v3
+
+    - name: Setup Zig
+      uses: mlugg/setup-zig@v2
+      with:
+        version: "0.14.1"
+
+    - name: Run tests
+      run: make test_zig_014
+
+  #------ cross compilation ------
   test_cross:
     strategy:
       matrix:

makefile

@@ -1,6 +1,6 @@
 .PHONY: test docs
 
-test:
+test_zig_nightly:
 	zig build test --summary failures -Dlang=lua51
 	zig build test --summary failures -Dlang=lua52
 	zig build test --summary failures -Dlang=lua53
@@ -13,6 +13,17 @@ test:
 
 	zig build -Dlang=luajit
 
+# A subset of tests that are expected to work also on zig-0.14
+test_zig_014:
+	zig build test --summary failures -Dlang=lua52
+	zig build test --summary failures -Dlang=lua53
+	zig build test --summary failures -Dlang=lua54
+	zig build test --summary failures -Dlang=luau
+
+	zig build install-example-interpreter
+	zig build install-example-zig-function
+	zig build -Dlang=luau install-example-luau-bytecode
+
 test_cross:
 	zig build -Dlang=lua51 -Dtarget=aarch64-linux
 	zig build -Dlang=lua51 -Dtarget=aarch64-linux-gnu