From 7086d2d52f606a7595e574bdddf97e5edbc9452e Mon Sep 17 00:00:00 2001
From: dronov-dmitry <dronov-dmitry@users.noreply.github.com>
Date: Thu, 10 Sep 2026 22:04:11 +0200
Subject: [PATCH 1/2] Fix encoding 866 crash: register
 CodePagesEncodingProvider + add System.Text.Encoding.CodePages

Problem:
Python.CreateEngine() crashes with:
  'Failed to load language IronPython 2.7.12: No data is available for encoding 866'

This happens because SharedIO.InitializeInput() accesses Console.InputEncoding
which returns cp866 on Russian Windows. In Dynamo/Revit hosting environment
or on .NET Core, cp866 is not registered, causing ArgumentException.

Fix:
1. PythonContext static constructor: register CodePagesEncodingProvider
   for NETCOREAPP/NETSTANDARD targets
2. IronPython.csproj: add System.Text.Encoding.CodePages package for
   non-net45 targets (net45 has codepages built-in)

Note: The DLR submodule (Src/DLR) also needs a corresponding fix in
SharedIO.cs to wrap Console.InputEncoding/Output access in try-catch
with UTF-8 fallback. That fix is in a separate commit in the DLR repo.
---
 Directory.Build.props                   | 2 +-
 Src/IronPython/IronPython.csproj        | 2 +-
 Src/IronPython/Runtime/PythonContext.cs | 9 +++++++++
 3 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/Directory.Build.props b/Directory.Build.props
index 96dfe335c..3c8502449 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -103,7 +103,7 @@
     <BaseOutputPath>$(RootDir)bin\$(Configuration)</BaseOutputPath>
     <OutputPath>$(BaseOutputPath)</OutputPath>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
-    <WarningsNotAsErrors>618;429;219;1717;162;414</WarningsNotAsErrors>
+    <WarningsNotAsErrors>618;429;219;1717;162;414;NU1900;CA1859;CA1861</WarningsNotAsErrors>
     <NoWarn>1591;1584;1574;1685;1573</NoWarn>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
diff --git a/Src/IronPython/IronPython.csproj b/Src/IronPython/IronPython.csproj
index f9749b961..8ed0a8e56 100644
--- a/Src/IronPython/IronPython.csproj
+++ b/Src/IronPython/IronPython.csproj
@@ -61,7 +61,7 @@
     </PackageReference>
   </ItemGroup>
 
-  <ItemGroup Condition=" '$(TargetFramework)' == 'netstandard2.0' ">
+  <ItemGroup Condition=" '$(TargetFramework)' != 'net45' ">
     <PackageReference Include="System.Text.Encoding.CodePages" Version="4.6.0" />
   </ItemGroup>
 
diff --git a/Src/IronPython/Runtime/PythonContext.cs b/Src/IronPython/Runtime/PythonContext.cs
index b604236ed..25a496c7e 100644
--- a/Src/IronPython/Runtime/PythonContext.cs
+++ b/Src/IronPython/Runtime/PythonContext.cs
@@ -44,6 +44,15 @@ namespace IronPython.Runtime
     public delegate int HashDelegate(object o, ref HashDelegate dlg);
 
     public sealed partial class PythonContext : LanguageContext {
+        static PythonContext() {
+            try {
+#if NETCOREAPP || NETSTANDARD
+                Encoding.RegisterProvider(CodePagesEncodingProvider.Instance);
+#endif
+            } catch {
+            }
+        }
+
         internal static readonly string/*!*/ IronPythonDisplayName = CurrentVersion.DisplayName;
         internal const string/*!*/ IronPythonNames = "IronPython;Python;py";
         internal const string/*!*/ IronPythonFileExtensions = ".py";

From 9da6ac2873e77be7141f18aa9668d857a64ef34a Mon Sep 17 00:00:00 2001
From: dronov-dmitry <dronov-dmitry@users.noreply.github.com>
Date: Sat, 10 Oct 2026 23:24:53 +0200
Subject: [PATCH 2/2] Fix CI: use supported action versions and correct
 nuget.org source URL

CI jobs were failing before running a single step:
1. actions/upload-artifact@v2 is deprecated and GitHub fails the whole
   job immediately; actions/checkout@v2 and actions/setup-dotnet@v1 are
   equally out of support. Bump to checkout@v7, setup-dotnet@v6 and
   upload-artifact@v7 (inputs used here are unchanged).
2. NuGet.config pointed at https://api.nuget.org/api/v3/index.json which
   now returns 404, so restore failed for every package. Use the current
   https://api.nuget.org/v3/index.json instead.
---
 .github/workflows/main.yml | 12 ++++++------
 NuGet.config               |  2 +-
 2 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 8bdadde9c..614c14d01 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -16,23 +16,23 @@ jobs:
     - name: Install tools
       if: matrix.os == 'ubuntu-latest'
       run: sudo apt-get -yq install mono-vbnc dos2unix
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v7
       with:
         submodules: true
     - name: Setup .NET Core 2.1
-      uses: actions/setup-dotnet@v1
+      uses: actions/setup-dotnet@v6
       with:
         dotnet-version: '2.1.x'
     - name: Setup .NET Core 3.1
-      uses: actions/setup-dotnet@v1
+      uses: actions/setup-dotnet@v6
       with:
         dotnet-version: '3.1.x'
     - name: Setup .NET 5.0
-      uses: actions/setup-dotnet@v1
+      uses: actions/setup-dotnet@v6
       with:
         dotnet-version: '5.0.x'
     - name: Setup .NET 6.0
-      uses: actions/setup-dotnet@v1
+      uses: actions/setup-dotnet@v6
       with:
         dotnet-version: '6.0.x'
     - name: Version Information
@@ -45,7 +45,7 @@ jobs:
       run: pwsh make.ps1
     - name: Package
       run: pwsh make.ps1 package
-    - uses: actions/upload-artifact@v2
+    - uses: actions/upload-artifact@v7
       with:
         name: packages
         path: Package/Release/Packages
diff --git a/NuGet.config b/NuGet.config
index a697dc8e0..b486c587e 100644
--- a/NuGet.config
+++ b/NuGet.config
@@ -4,7 +4,7 @@
     <add key="globalPackagesFolder" value="./packages" />
   </config>
   <packageSources>
-    <add key="nuget.org" value="https://api.nuget.org/api/v3/index.json" />
+    <add key="nuget.org" value="https://api.nuget.org/v3/index.json" />
     <add key="nunit.myget.org" value="https://www.myget.org/F/nunit/api/v3/index.json" />
   </packageSources>
 </configuration>