Add color to PklEvaluatorSettings (#32)

This adds a field that was added in Pkl 0.27

.circleci/config.pkl

@@ -1,5 +1,5 @@
 // ===----------------------------------------------------------------------===//
-// Copyright © 2024 Apple Inc. and the Pkl project authors. All rights reserved.
+// Copyright © 2024-2025 Apple Inc. and the Pkl project authors. All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -13,7 +13,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 // ===----------------------------------------------------------------------===//
-amends "package://pkg.pkl-lang.org/pkl-project-commons/pkl.impl.circleci@1.0.1#/PklCI.pkl"
+amends "package://pkg.pkl-lang.org/pkl-project-commons/pkl.impl.circleci@1.1.1#/PklCI.pkl"
 
 import "pkl:semver"
 
@@ -47,7 +47,7 @@ local class PklDistribution {
 }
 
 local pklCurrent: PklDistribution = new {
-  version = "0.26.0"
+  version = "0.27.2"
 }
 
 local pklDistributions: Listing<PklDistribution> = new {

.circleci/config.yml

@@ -29,16 +29,16 @@ jobs:
     resource_class: xlarge
     docker:
     - image: swift:5.9-rhel-ubi9
-  test-pkl-0-26-0:
+  test-pkl-0-27-2:
     steps:
     - checkout
     - run:
         command: |-
-          PKL=$(mktemp /tmp/pkl-0.26.0-XXXXXX)
+          PKL=$(mktemp /tmp/pkl-0.27.2-XXXXXX)
-          curl -L "https://github.com/apple/pkl/releases/download/0.26.0/pkl-linux-amd64" > $PKL
+          curl -L "https://github.com/apple/pkl/releases/download/0.27.2/pkl-linux-amd64" > $PKL
           chmod +x $PKL
           echo "export PKL_EXEC=$PKL" >> $BASH_ENV
-        name: Downloading pkl-0.26.0
+        name: Downloading pkl-0.27.2
     - run:
         command: |-
           mkdir -p .out/test-results/
@@ -108,11 +108,11 @@ jobs:
     - checkout
     - run:
         command: |-
-          PKL=$(mktemp /tmp/pkl-0.26.0-XXXXXX)
+          PKL=$(mktemp /tmp/pkl-0.27.2-XXXXXX)
-          curl -L "https://github.com/apple/pkl/releases/download/0.26.0/pkl-linux-amd64" > $PKL
+          curl -L "https://github.com/apple/pkl/releases/download/0.27.2/pkl-linux-amd64" > $PKL
           chmod +x $PKL
           echo "export PKL_EXEC=$PKL" >> $BASH_ENV
-        name: Downloading pkl-0.26.0
+        name: Downloading pkl-0.27.2
     - run:
         command: $PKL_EXEC project package --skip-publish-check --output-path out/pkl-package/ codegen/src/
     - persist_to_workspace:
@@ -193,11 +193,9 @@ workflows:
     - test-pkl-0-25-3:
         requires:
         - hold
-        - pr-approval/authenticate
+    - test-pkl-0-27-2:
-    - test-pkl-0-26-0:
         requires:
         - hold
-        - pr-approval/authenticate
     when:
       matches:
         value: << pipeline.git.branch >>
@@ -205,7 +203,7 @@ workflows:
   main:
     jobs:
     - test-pkl-0-25-3
-    - test-pkl-0-26-0
+    - test-pkl-0-27-2
     when:
       equal:
       - main
@@ -218,7 +216,7 @@ workflows:
             ignore: /.*/
           tags:
             only: /^v?\d+\.\d+\.\d+$/
-    - test-pkl-0-26-0:
+    - test-pkl-0-27-2:
         filters:
           branches:
             ignore: /.*/
@@ -227,7 +225,7 @@ workflows:
     - pkl-package:
         requires:
         - test-pkl-0-25-3
-        - test-pkl-0-26-0
+        - test-pkl-0-27-2
         filters:
           branches:
             ignore: /.*/
@@ -236,7 +234,7 @@ workflows:
     - pkl-gen-swift-macos:
         requires:
         - test-pkl-0-25-3
-        - test-pkl-0-26-0
+        - test-pkl-0-27-2
         filters:
           branches:
             ignore: /.*/
@@ -245,7 +243,7 @@ workflows:
     - pkl-gen-swift-linux-amd64:
         requires:
         - test-pkl-0-25-3
-        - test-pkl-0-26-0
+        - test-pkl-0-27-2
         filters:
           branches:
             ignore: /.*/
@@ -254,7 +252,7 @@ workflows:
     - pkl-gen-swift-linux-aarch64:
         requires:
         - test-pkl-0-25-3
-        - test-pkl-0-26-0
+        - test-pkl-0-27-2
         filters:
           branches:
             ignore: /.*/

Sources/PklSwift/PklEvaluatorSettings.swift

@@ -26,8 +26,28 @@ public struct PklEvaluatorSettings: Decodable, Hashable {
     let moduleCacheDir: String?
     let rootDir: String?
     let http: Http?
+
+    /// Added in Pkl 0.27
     let externalModuleReaders: [String: ExternalReader]?
+
+    /// Added in Pkl 0.27
     let externalResourceReaders: [String: ExternalReader]?
+
+    /// Whether to format messages and test results with ANSI color colors.
+    ///
+    /// Added in Pkl 0.27
+    let color: PklEvaluatorSettingsColor?
+}
+
+public enum PklEvaluatorSettingsColor: String, CaseIterable, Decodable, Hashable {
+    /// Never format.
+    case never = "never"
+
+    /// Format if the process' stdin, stdout, or stderr are connected to a console.
+    case auto = "auto"
+
+    /// Always format.
+    case always = "always"
 }
 
 /// Settings that control how Pkl talks to HTTP(S) servers.

Tests/PklSwiftTests/ProjectTest.swift

@@ -28,6 +28,7 @@ class ProjectTest: XCTestCase {
         let otherProjectFile = subDir.appendingPathComponent("PklProject")
 
         try #"""
+        @ModuleInfo { minPklVersion = "0.25.0" }
         amends "pkl:Project"
 
         package {
@@ -71,6 +72,7 @@ class ProjectTest: XCTestCase {
           }
         }
         """
+        let colorSetting = version < pklVersion0_27 ? "" : #"color = "always""#
         let httpExpectation = version < pklVersion0_26 ? nil : Http(
             caCertificates: nil,
             proxy: .init(address: "http://localhost:1", noProxy: ["example.com", "foo.bar.org"])
@@ -83,6 +85,7 @@ class ProjectTest: XCTestCase {
           "scheme3": ExternalReader(executable: "reader3"),
           "scheme4": ExternalReader(executable: "reader4", arguments: ["with", "args"]),
         ]
+        let color: PklEvaluatorSettingsColor? = version < pklVersion0_27 ? nil : .always
         try #"""
         amends "pkl:Project"
 
@@ -129,6 +132,7 @@ class ProjectTest: XCTestCase {
           rootDir = "/buzzy"
           \#(externalReaderSettings)
           \#(httpSetting)
+          \#(colorSetting)
         }
 
         dependencies {
@@ -155,7 +159,8 @@ class ProjectTest: XCTestCase {
                 rootDir: "/buzzy",
                 http: httpExpectation,
                 externalModuleReaders: externalModuleReadersExpectation,
-                externalResourceReaders: externalResourceReadersExpectation
+                externalResourceReaders: externalResourceReadersExpectation,
+                color: color
             )
             let expectedPackage = PklSwift.Project.Package(
                 name: "hawk",
@@ -212,7 +217,8 @@ class ProjectTest: XCTestCase {
                         rootDir: nil,
                         http: nil,
                         externalModuleReaders: nil,
-                        externalResourceReaders: nil
+                        externalResourceReaders: nil,
+                        color: nil
                     ),
                     projectFileUri: "\(otherProjectFile)",
                     tests: [],