Try Add To NH?

NewHorizons.Serialization/NewHorizons.Serialization.csproj

@@ -0,0 +1,22 @@
+<Project Sdk="Microsoft.NET.Sdk">
+    <PropertyGroup>
+        <TargetFramework>net48</TargetFramework>
+        <LangVersion>default</LangVersion>
+        <Copyright>Copyright © 2021-2023 New Horizons Team</Copyright>
+        <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+        <AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>
+        <AppendRuntimeIdentifierToOutputPath>false</AppendRuntimeIdentifierToOutputPath>
+        <CopyLocalLockFileAssemblies>false</CopyLocalLockFileAssemblies>
+        <GenerateDocumentationFile>true</GenerateDocumentationFile>
+        <ResolveAssemblyWarnOrErrorOnTargetArchitectureMismatch>None</ResolveAssemblyWarnOrErrorOnTargetArchitectureMismatch>
+        <NoWarn>1701;1702;1591</NoWarn>
+    </PropertyGroup>
+    <PropertyGroup Condition=" '$(Configuration)' == 'Release' ">
+        <DebugType>none</DebugType>
+    </PropertyGroup>
+    <ItemGroup>
+        <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
+        <PackageReference Include="NJsonSchema.Annotations" Version="11.0.1" />
+        <PackageReference Include="System.ComponentModel.Annotations" Version="5.0.0" />
+    </ItemGroup>
+</Project>

NewHorizons.Serialization/Properties/AssemblyInfo.cs

@@ -0,0 +1,35 @@
+using System.Reflection;
+using System.Runtime.InteropServices;
+
+// General Information about an assembly is controlled through the following 
+// set of attributes. Change these attribute values to modify the information
+// associated with an assembly.
+[assembly: AssemblyTitle("NewHorizons.Serialization")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("")]
+[assembly: AssemblyProduct("NewHorizons.Serialization")]
+[assembly: AssemblyCopyright("Copyright ©  2024")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+
+// Setting ComVisible to false makes the types in this assembly not visible 
+// to COM components.  If you need to access a type in this assembly from 
+// COM, set the ComVisible attribute to true on that type.
+[assembly: ComVisible(false)]
+
+// The following GUID is for the ID of the typelib if this project is exposed to COM
+[assembly: Guid("9A68BD43-1C0D-431B-A5D5-76CE955E5971")]
+
+// Version information for an assembly consists of the following four values:
+//
+//      Major Version
+//      Minor Version 
+//      Build Number
+//      Revision
+//
+// You can specify all the values or you can default the Build and Revision Numbers 
+// by using the '*' as shown below:
+// [assembly: AssemblyVersion("1.0.*")]
+[assembly: AssemblyVersion("1.0.0.0")]
+[assembly: AssemblyFileVersion("1.0.0.0")]

NewHorizons/NewHorizons.csproj

@@ -15,6 +15,7 @@
         <DebugType>none</DebugType>
     </PropertyGroup>
     <ItemGroup>
+        <PackageReference Include="NJsonSchema.Annotations" Version="11.0.1" />
         <PackageReference Include="OuterWildsGameLibs" Version="1.1.15.1018" />
         <PackageReference Include="OWML" Version="2.12.1" />
         <Reference Include="../Lib/System.ComponentModel.Annotations.dll" />

NewHorizons/NewHorizons.csproj.user

@@ -1,5 +1,8 @@
 <Project>
-  <PropertyGroup>
-    <OutputPath>$(AppData)\OuterWildsModManager\OWML\Mods\xen.NewHorizons</OutputPath>
-  </PropertyGroup>
+    <PropertyGroup Condition="'$(OS)' == 'Windows_NT'">
+        <OutputPath>$(AppData)/OuterWildsModManager/OWML/Mods/xen.NewHorizons</OutputPath>
+    </PropertyGroup>
+    <PropertyGroup Condition="'$(OS)' == 'Unix'">
+        <OutputPath>$(HOME)/.local/share/OuterWildsModManager/OWML/Mods/xen.NewHorizons</OutputPath>
+    </PropertyGroup>
 </Project>

SchemaExporter/SchemaExporter.cs

@@ -4,6 +4,7 @@ using System.IO;
 using NewHorizons.External.Configs;
 using NJsonSchema;
 using NJsonSchema.Generation;
+using NJsonSchema.NewtonsoftJson.Generation;
 
 namespace SchemaExporter;
 
@@ -15,7 +16,7 @@ public static class SchemaExporter
 
         Directory.CreateDirectory(folderName);
         Console.WriteLine("Schema Generator: We're winning!");
-        var settings = new JsonSchemaGeneratorSettings
+        var settings = new NewtonsoftJsonSchemaGeneratorSettings
         {
             IgnoreObsoleteProperties = true,
             DefaultReferenceTypeNullHandling = ReferenceTypeNullHandling.NotNull,

SchemaExporter/SchemaExporter.csproj

@@ -12,14 +12,15 @@
         <DebugType>none</DebugType>
     </PropertyGroup>
     <ItemGroup>
-        <None Include="System.Runtime.Serialization.dll">
+        <None Include="System*.dll">
             <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
         </None>
         <None Include="UnityEngine.CoreModule.dll">
             <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
         </None>
         <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
-        <PackageReference Include="NJsonSchema" Version="10.9.0" />
+        <PackageReference Include="NJsonSchema" Version="11.0.1" />
+        <PackageReference Include="NJsonSchema.NewtonsoftJson" Version="11.0.1" />
         <PackageReference Include="OuterWildsGameLibs" Version="1.1.15.1018" IncludeAssets="compile" />
         <PackageReference Include="System.ComponentModel.Annotations" Version="5.0.0" />
     </ItemGroup>