From c095c65ac917cebbe88b07d5ddc5cefda6fd6b1c Mon Sep 17 00:00:00 2001
From: Mattias Karlsson <matkar@wcom.se>
Date: Wed, 25 Feb 2026 23:38:48 +0100
Subject: [PATCH] (GH-4667) Make DotNetSlnList locale-independent

- Force dotnet CLI to use English output via `DOTNET_CLI_UI_LANGUAGE=en` so project list parsing works on non-English locales
- fixes #4667
---
 src/Cake.Common/Tools/DotNet/DotNetAliases.Sln.cs        | 5 +----
 src/Cake.Common/Tools/DotNet/Sln/List/DotNetSlnLister.cs | 6 +++++-
 2 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/src/Cake.Common/Tools/DotNet/DotNetAliases.Sln.cs b/src/Cake.Common/Tools/DotNet/DotNetAliases.Sln.cs
index a1fc92179f..d20378c317 100644
--- a/src/Cake.Common/Tools/DotNet/DotNetAliases.Sln.cs
+++ b/src/Cake.Common/Tools/DotNet/DotNetAliases.Sln.cs
@@ -99,10 +99,7 @@ public static IEnumerable<string> DotNetSlnList(this ICakeContext context, FileP
         {
             ArgumentNullException.ThrowIfNull(context);
 
-            if (settings is null)
-            {
-                settings = new DotNetSlnListSettings();
-            }
+            settings ??= new DotNetSlnListSettings();
 
             var lister = new DotNetSlnLister(context.FileSystem, context.Environment, context.ProcessRunner, context.Tools);
             return lister.List(solution, settings);
diff --git a/src/Cake.Common/Tools/DotNet/Sln/List/DotNetSlnLister.cs b/src/Cake.Common/Tools/DotNet/Sln/List/DotNetSlnLister.cs
index dc2aa13a39..57972992e2 100644
--- a/src/Cake.Common/Tools/DotNet/Sln/List/DotNetSlnLister.cs
+++ b/src/Cake.Common/Tools/DotNet/Sln/List/DotNetSlnLister.cs
@@ -46,7 +46,11 @@ public IEnumerable<string> List(FilePath solution, DotNetSlnListSettings setting
 
             var processSettings = new ProcessSettings
             {
-                RedirectStandardOutput = true
+                RedirectStandardOutput = true,
+                EnvironmentVariables = new Dictionary<string, string>(settings.EnvironmentVariables)
+                                        {
+                                            { "DOTNET_CLI_UI_LANGUAGE",  "en" }
+                                        }
             };
 
             IEnumerable<string> result = null;