Use types

.github/workflows/ci.cue

@@ -1,13 +1,40 @@
-let OTP_Versions = {
-	latest: [24.0]
+// Versions for simplicity
+_versions: {
+	latest: ["24.0"]
 	// Older versions than 22.3 use Debian stretch, and it only has libsodium 0.18
 	// In turn, we can't compile for the newer libsodium functions on this image,
 	// and it fails. Hence these versions.
-	all: [22.3, 23.3, 24.0]
+	all: ["22.3", "23.3", "24.0"]
 }
 
-name: "build"
-on: {
+#Name: string
+#Branches: branches: [string]
+
+#On: {
+	push:         #Branches
+	pull_request: #Branches
+}
+#Steps: {
+	uses: "actions/checkout@v2"
+} | {
+	name: string
+	run:  string
+}
+
+#Jobs: ci: {
+	name:      string
+	"runs-on": string
+	container: image: string
+	strategy:
+		matrix: {
+			otp_vsn: [string, ...]
+			os: ["ubuntu-latest"]
+		}
+	steps: [#Steps, ...]
+}
+
+name: #Name & "build"
+on:   #On & {
 	push: branches: [
 		"master",
 	]
@@ -15,24 +42,29 @@ on: {
 		"master",
 	]
 }
-jobs: ci: {
-	name:      "Run checks and tests over ${{matrix.otp_vsn}} and ${{matrix.os}}"
-	"runs-on": "${{matrix.os}}"
-	container: image: "erlang:${{matrix.otp_vsn}}"
-	strategy: matrix: {
-		otp_vsn: OTP_Versions.all
-		// This entry is a lie. The container images are Debian containers, but
-		// one has to specify where those containers are hosted.
-		os: ["ubuntu-latest"]
-	}
-	steps: [
-		{uses: "actions/checkout@v2"},
-		{name: "Update apt-get database",
-		 run: "apt-get update"},
-	    {name: "Install libsodium",
-		 run: "apt-get install -y libsodium-dev"},
-		{name: "Compile source code",
-		 run: "make compile"},
-		{name: "Run the tests",
-		 run: "make tests"}]
-}
+jobs: #Jobs & {
+	ci: {
+		name:      "Run checks and tests over ${{matrix.otp_vsn}} and ${{matrix.os}}"
+		"runs-on": "${{matrix.os}}"
+		container: image: "erlang:${{matrix.otp_vsn}}"
+		strategy: matrix: {
+			otp_vsn: _versions.all
+			// This entry is a lie. The container images are Debian containers, but
+			// one has to specify where those containers are hosted.
+			os: ["ubuntu-latest"]
+		}
+		steps: [
+			{uses: "actions/checkout@v2"},
+			{name: "Update apt-get database"
+				run: "apt-get update"
+			},
+			{name: "Install libsodium"
+				run: "apt-get install -y libsodium-dev"
+			},
+			{name: "Compile source code"
+				run: "make compile"
+			},
+			{name: "Run the tests"
+				run: "make tests"
+			}]
+	}}

.github/workflows/ci.yaml

@@ -15,9 +15,9 @@ jobs:
     strategy:
       matrix:
         otp_vsn:
-        - 22.3
-        - 23.3
-        - 24.0
+        - "22.3"
+        - "23.3"
+        - "24.0"
         os:
         - ubuntu-latest
     steps: