Fix non-coloured tuistenv output

CHANGELOG.md

@@ -14,6 +14,7 @@ Please, check out guidelines: https://keepachangelog.com/en/1.0.0/
 
 - Transitively link static dependency's dynamic dependencies correctly https://github.com/tuist/tuist/pull/484 by @adamkhazi
 - Prevent embedding static frameworks https://github.com/tuist/tuist/pull/490 by @kwridan
+- Output losing its format when tuist is run through `tuistenv` https://github.com/tuist/tuist/pull/493 by @pepibumur
 
 ## 0.17.0
 

Sources/TuistCore/Constants.swift

@@ -8,4 +8,8 @@ public class Constants {
     public static let version = "0.17.0"
     public static let swiftVersion: String = "5.0"
     public static let bundleName: String = "tuist.zip"
+
+    public class EnvironmentVariables {
+        public static let colouredOutput = "TUIST_COLOURED_OUTPUT"
+    }
 }

Sources/TuistCore/Linter/LintingIssue.swift

@@ -48,16 +48,13 @@ public extension Array where Element == LintingIssue {
         let warningIssues = filter { $0.severity == .warning }
 
         if !warningIssues.isEmpty {
-            Printer.shared.print("The following issues have been found:", color: .yellow)
-            let message = warningIssues.map { "  - \($0.description)" }.joined(separator: "\n")
-            Printer.shared.print(message)
+            let message = warningIssues.map { "- \($0.description)" }.joined(separator: "\n")
+            Printer.shared.print(warning: message)
         }
 
         if !errorIssues.isEmpty {
-            let prefix = !warningIssues.isEmpty ? "\n" : ""
-            Printer.shared.print("\(prefix)The following critical issues have been found:", output: .standardError)
-            let message = errorIssues.map { "  - \($0.description)" }.joined(separator: "\n")
-            Printer.shared.print(message, output: .standardError)
+            let message = errorIssues.map { "- \($0.description)" }.joined(separator: "\n")
+            Printer.shared.print(errorMessage: message)
 
             throw LintingError()
         }