diff --git a/ThunderstoreCLI/API/ApiHelper.cs b/ThunderstoreCLI/API/ApiHelper.cs
index afd05ef..2c1f1fa 100644
--- a/ThunderstoreCLI/API/ApiHelper.cs
+++ b/ThunderstoreCLI/API/ApiHelper.cs
@@ -108,7 +108,7 @@ public HttpRequestMessage GetPackagesV1(string community)
 
     private static string SerializeFileData(string filePath)
     {
-        return new FileData()
+        return new FileData
         {
             Filename = Path.GetFileName(filePath),
             Filesize = new FileInfo(filePath).Length
diff --git a/ThunderstoreCLI/Commands/BuildCommand.cs b/ThunderstoreCLI/Commands/BuildCommand.cs
index 3cdbeac..ba58a67 100644
--- a/ThunderstoreCLI/Commands/BuildCommand.cs
+++ b/ThunderstoreCLI/Commands/BuildCommand.cs
@@ -294,14 +294,19 @@ public static string FormatArchivePath(string path, bool validate = true)
     public static string SerializeManifest(Config config)
     {
         var dependencies = config.PackageConfig.Dependencies ?? new Dictionary<string, string>();
-        var manifest = new PackageManifestV1()
+        IEnumerable<InstallerDeclaration>? installerDeclarations = config.InstallConfig.InstallerDeclarations;
+        installerDeclarations ??= Array.Empty<InstallerDeclaration>();
+        var manifest = new PackageManifestV1
         {
             Namespace = config.PackageConfig.Namespace,
             Name = config.PackageConfig.Name,
             Description = config.PackageConfig.Description,
             VersionNumber = config.PackageConfig.VersionNumber,
             WebsiteUrl = config.PackageConfig.WebsiteUrl,
-            Dependencies = dependencies.Select(x => $"{x.Key}-{x.Value}").ToArray()
+            Dependencies = dependencies.Select(x => $"{x.Key}-{x.Value}").ToArray(),
+            Installers = installerDeclarations
+                .Select(x => new PackageManifestV1.InstallerDeclaration { Identifier = x.Identifier })
+                .ToArray()
         };
 
         return manifest.Serialize(BaseJson.IndentedSettings);
diff --git a/ThunderstoreCLI/Commands/InitCommand.cs b/ThunderstoreCLI/Commands/InitCommand.cs
index a63bb57..bdb5f21 100644
--- a/ThunderstoreCLI/Commands/InitCommand.cs
+++ b/ThunderstoreCLI/Commands/InitCommand.cs
@@ -38,7 +38,7 @@ public static int Run(Config config)
             {
                 Write.Line($"Project configuration already exists, overwriting");
             }
-            File.WriteAllText(path, new ThunderstoreProject(true).Serialize());
+            File.WriteAllText(path, new ThunderstoreProject(Config.DefaultConfig).Serialize());
 
             var iconPath = config.GetPackageIconPath();
             if (File.Exists(iconPath))
diff --git a/ThunderstoreCLI/Commands/InstallCommand.cs b/ThunderstoreCLI/Commands/InstallCommand.cs
index 1d7bb28..0b76ce4 100644
--- a/ThunderstoreCLI/Commands/InstallCommand.cs
+++ b/ThunderstoreCLI/Commands/InstallCommand.cs
@@ -1,6 +1,5 @@
 using System.Diagnostics;
 using System.IO.Compression;
-using System.Net.Http.Headers;
 using System.Runtime.InteropServices;
 using System.Text.RegularExpressions;
 using ThunderstoreCLI.Configuration;
diff --git a/ThunderstoreCLI/Commands/PublishCommand.cs b/ThunderstoreCLI/Commands/PublishCommand.cs
index de07e9b..2b5e437 100644
--- a/ThunderstoreCLI/Commands/PublishCommand.cs
+++ b/ThunderstoreCLI/Commands/PublishCommand.cs
@@ -253,7 +253,7 @@ private static void PublishPackageRequest(Config config, string uploadUuid)
                 throw new PublishCommandException();
             }
 
-            return new CompletedUpload.CompletedPartData()
+            return new CompletedUpload.CompletedPartData
             {
                 ETag = response.Headers.ETag.Tag,
                 PartNumber = part.PartNumber
diff --git a/ThunderstoreCLI/Commands/RunCommand.cs b/ThunderstoreCLI/Commands/RunCommand.cs
index d3b7de2..48899b2 100644
--- a/ThunderstoreCLI/Commands/RunCommand.cs
+++ b/ThunderstoreCLI/Commands/RunCommand.cs
@@ -1,6 +1,5 @@
 using System.Diagnostics;
 using System.Runtime.InteropServices;
-using System.Text;
 using ThunderstoreCLI.Configuration;
 using ThunderstoreCLI.Game;
 using ThunderstoreCLI.Utils;
diff --git a/ThunderstoreCLI/Configuration/CLIParameterConfig.cs b/ThunderstoreCLI/Configuration/CLIParameterConfig.cs
index 759873e..04d5750 100644
--- a/ThunderstoreCLI/Configuration/CLIParameterConfig.cs
+++ b/ThunderstoreCLI/Configuration/CLIParameterConfig.cs
@@ -11,7 +11,7 @@ public BaseConfig(T options)
 
     public override GeneralConfig GetGeneralConfig()
     {
-        return new GeneralConfig()
+        return new GeneralConfig
         {
             TcliConfig = options.TcliDirectory,
             Repository = options.Repository
@@ -29,7 +29,7 @@ public CLIParameterConfig(T opts) : base(opts) { }
     {
         if (options == null)
             return null;
-        return new PackageConfig()
+        return new PackageConfig
         {
             ProjectConfigPath = options.ConfigPath,
             Namespace = options.Namespace,
@@ -45,7 +45,7 @@ public CLIInitCommandConfig(InitOptions options) : base(options) { }
 
     public override InitConfig GetInitConfig()
     {
-        return new InitConfig()
+        return new InitConfig
         {
             Overwrite = options.Overwrite
         };
@@ -63,7 +63,7 @@ public CLIPublishCommandConfig(PublishOptions options) : base(options) { }
 
     public override PublishConfig GetPublishConfig()
     {
-        return new PublishConfig()
+        return new PublishConfig
         {
             File = options.File
         };
@@ -71,7 +71,7 @@ public override PublishConfig GetPublishConfig()
 
     public override AuthConfig GetAuthConfig()
     {
-        return new AuthConfig()
+        return new AuthConfig
         {
             AuthToken = options.Token
         };
@@ -82,9 +82,9 @@ public class ModManagementCommandConfig : BaseConfig<ModManagementOptions>
 {
     public ModManagementCommandConfig(ModManagementOptions options) : base(options) { }
 
-    public override ModManagementConfig? GetModManagementConfig()
+    public override ModManagementConfig GetModManagementConfig()
     {
-        return new ModManagementConfig()
+        return new ModManagementConfig
         {
             GameIdentifer = options.GameName,
             ProfileName = options.Profile,
@@ -97,9 +97,9 @@ public class GameImportCommandConfig : BaseConfig<GameImportOptions>
 {
     public GameImportCommandConfig(GameImportOptions options) : base(options) { }
 
-    public override GameImportConfig? GetGameImportConfig()
+    public override GameImportConfig GetGameImportConfig()
     {
-        return new GameImportConfig()
+        return new GameImportConfig
         {
             ExePath = options.ExePath,
             GameId = options.GameId,
@@ -111,9 +111,9 @@ public class RunGameCommandConfig : BaseConfig<RunGameOptions>
 {
     public RunGameCommandConfig(RunGameOptions options) : base(options) { }
 
-    public override RunGameConfig? GetRunGameConfig()
+    public override RunGameConfig GetRunGameConfig()
     {
-        return new RunGameConfig()
+        return new RunGameConfig
         {
             GameName = options.GameName,
             ProfileName = options.Profile,
diff --git a/ThunderstoreCLI/Configuration/Config.cs b/ThunderstoreCLI/Configuration/Config.cs
index ff35a83..d561891 100644
--- a/ThunderstoreCLI/Configuration/Config.cs
+++ b/ThunderstoreCLI/Configuration/Config.cs
@@ -13,6 +13,7 @@ public class Config
     public required InitConfig InitConfig { get; init; }
     public required BuildConfig BuildConfig { get; init; }
     public required PublishConfig PublishConfig { get; init; }
+    public required InstallConfig InstallConfig { get; init; }
     public required AuthConfig AuthConfig { get; init; }
     public required ModManagementConfig ModManagementConfig { get; init; }
     public required GameImportConfig GameImportConfig { get; init; }
@@ -30,6 +31,23 @@ private Config()
         api = new Lazy<ApiHelper>(() => new ApiHelper(this));
         cache = new Lazy<DownloadCache>(() => new DownloadCache(Path.Combine(GeneralConfig!.TcliConfig, "ModCache")));
     }
+
+    private static Config BlankConfig => new()
+    {
+        GeneralConfig = new GeneralConfig(),
+        PackageConfig = new PackageConfig(),
+        InitConfig = new InitConfig(),
+        BuildConfig = new BuildConfig(),
+        PublishConfig = new PublishConfig(),
+        InstallConfig = new InstallConfig(),
+        AuthConfig = new AuthConfig(),
+        ModManagementConfig = new ModManagementConfig(),
+        GameImportConfig = new GameImportConfig(),
+        RunGameConfig = new RunGameConfig(),
+    };
+
+    public static Config DefaultConfig => MergeConfigFromProvider(BlankConfig, new DefaultConfig(), true);
+
     public static Config FromCLI(IConfigProvider cliConfig)
     {
         List<IConfigProvider> providers = new();
@@ -99,7 +117,7 @@ public string GetBuildOutputFile()
 
     public PackageUploadMetadata GetUploadMetadata(string fileUuid)
     {
-        return new PackageUploadMetadata()
+        return new PackageUploadMetadata
         {
             AuthorName = PackageConfig.Namespace,
             Categories = PublishConfig.Categories!.GetOrDefault("") ?? Array.Empty<string>(),
@@ -114,34 +132,30 @@ public PackageUploadMetadata GetUploadMetadata(string fileUuid)
 
     public static Config Parse(IConfigProvider[] configProviders)
     {
-        Config result = new()
-        {
-            GeneralConfig = new GeneralConfig(),
-            PackageConfig = new PackageConfig(),
-            InitConfig = new InitConfig(),
-            BuildConfig = new BuildConfig(),
-            PublishConfig = new PublishConfig(),
-            AuthConfig = new AuthConfig(),
-            ModManagementConfig = new ModManagementConfig(),
-            GameImportConfig = new GameImportConfig(),
-            RunGameConfig = new RunGameConfig(),
-        };
+        var result = BlankConfig;
         foreach (var provider in configProviders)
         {
-            provider.Parse(result);
-            Merge(result.GeneralConfig, provider.GetGeneralConfig(), false);
-            Merge(result.PackageConfig, provider.GetPackageMeta(), false);
-            Merge(result.InitConfig, provider.GetInitConfig(), false);
-            Merge(result.BuildConfig, provider.GetBuildConfig(), false);
-            Merge(result.PublishConfig, provider.GetPublishConfig(), false);
-            Merge(result.AuthConfig, provider.GetAuthConfig(), false);
-            Merge(result.ModManagementConfig, provider.GetModManagementConfig(), false);
-            Merge(result.GameImportConfig, provider.GetGameImportConfig(), false);
-            Merge(result.RunGameConfig, provider.GetRunGameConfig(), false);
+            MergeConfigFromProvider(result, provider, false);
         }
         return result;
     }
 
+    public static Config MergeConfigFromProvider(Config target, IConfigProvider provider, bool overwrite)
+    {
+        provider.Parse(target);
+        Merge(target.GeneralConfig, provider.GetGeneralConfig(), overwrite);
+        Merge(target.PackageConfig, provider.GetPackageMeta(), overwrite);
+        Merge(target.InitConfig, provider.GetInitConfig(), overwrite);
+        Merge(target.BuildConfig, provider.GetBuildConfig(), overwrite);
+        Merge(target.PublishConfig, provider.GetPublishConfig(), overwrite);
+        Merge(target.InstallConfig, provider.GetInstallConfig(), overwrite);
+        Merge(target.AuthConfig, provider.GetAuthConfig(), overwrite);
+        Merge(target.ModManagementConfig, provider.GetModManagementConfig(), overwrite);
+        Merge(target.GameImportConfig, provider.GetGameImportConfig(), overwrite);
+        Merge(target.RunGameConfig, provider.GetRunGameConfig(), overwrite);
+        return target;
+    }
+
     public static void Merge<[DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicProperties)] T>(T target, T source, bool overwrite)
     {
         if (source == null)
@@ -218,6 +232,21 @@ public class PublishConfig
     public Dictionary<string, string[]>? Categories { get; set; }
 }
 
+public struct InstallerDeclaration
+{
+    public readonly string Identifier;
+
+    public InstallerDeclaration(string identifier)
+    {
+        Identifier = identifier;
+    }
+}
+
+public class InstallConfig
+{
+    public List<InstallerDeclaration>? InstallerDeclarations { get; set; }
+}
+
 public class AuthConfig
 {
     public string? AuthToken { get; set; }
diff --git a/ThunderstoreCLI/Configuration/DefaultConfig.cs b/ThunderstoreCLI/Configuration/DefaultConfig.cs
index c78cef7..64cd744 100644
--- a/ThunderstoreCLI/Configuration/DefaultConfig.cs
+++ b/ThunderstoreCLI/Configuration/DefaultConfig.cs
@@ -2,9 +2,9 @@ namespace ThunderstoreCLI.Configuration;
 
 class DefaultConfig : EmptyConfig
 {
-    public override GeneralConfig? GetGeneralConfig()
+    public override GeneralConfig GetGeneralConfig()
     {
-        return new GeneralConfig()
+        return new GeneralConfig
         {
             Repository = Defaults.REPOSITORY_URL
         };
@@ -12,25 +12,25 @@ class DefaultConfig : EmptyConfig
 
     public override PackageConfig GetPackageMeta()
     {
-        return new PackageConfig()
+        return new PackageConfig
         {
             ProjectConfigPath = Defaults.PROJECT_CONFIG_PATH,
             Namespace = "AuthorName",
             Name = "PackageName",
             VersionNumber = "0.0.1",
             Description = "Example mod description",
-            WebsiteUrl = "",
+            WebsiteUrl = "https://thunderstore.io",
             ContainsNsfwContent = false,
             Dependencies = new()
             {
-                { "Example-Dependency", "1.0.0" }
+                { "AuthorName-PackageName", "0.0.1" }
             }
         };
     }
 
     public override InitConfig GetInitConfig()
     {
-        return new InitConfig()
+        return new InitConfig
         {
             Overwrite = false
         };
@@ -38,23 +38,32 @@ public override InitConfig GetInitConfig()
 
     public override BuildConfig GetBuildConfig()
     {
-        return new BuildConfig()
+        return new BuildConfig
         {
             IconPath = "./icon.png",
             ReadmePath = "./README.md",
             OutDir = "./build",
-            CopyPaths = new()
-            {
-                { new("./dist", "") }
-            }
+            CopyPaths = [new("./dist", "")]
         };
     }
 
     public override PublishConfig GetPublishConfig()
     {
-        return new PublishConfig()
+        return new PublishConfig
+        {
+            File = null,
+            Communities = ["riskofrain2"],
+            Categories = new Dictionary<string, string[]> {
+                { "riskofrain2", ["items", "skills", ] },
+            }
+        };
+    }
+
+    public override InstallConfig GetInstallConfig()
+    {
+        return new InstallConfig
         {
-            File = null
+            InstallerDeclarations = [new InstallerDeclaration("foo-installer")]
         };
     }
 }
diff --git a/ThunderstoreCLI/Configuration/EmptyConfig.cs b/ThunderstoreCLI/Configuration/EmptyConfig.cs
index c3074b5..20839e9 100644
--- a/ThunderstoreCLI/Configuration/EmptyConfig.cs
+++ b/ThunderstoreCLI/Configuration/EmptyConfig.cs
@@ -4,48 +4,23 @@ namespace ThunderstoreCLI.Configuration;
 public abstract class EmptyConfig : IConfigProvider
 {
     public virtual void Parse(Config currentConfig) { }
-    public virtual GeneralConfig? GetGeneralConfig()
-    {
-        return null;
-    }
-
-    public virtual PackageConfig? GetPackageMeta()
-    {
-        return null;
-    }
-
-    public virtual InitConfig? GetInitConfig()
-    {
-        return null;
-    }
-
-    public virtual BuildConfig? GetBuildConfig()
-    {
-        return null;
-    }
-
-    public virtual PublishConfig? GetPublishConfig()
-    {
-        return null;
-    }
-
-    public virtual AuthConfig? GetAuthConfig()
-    {
-        return null;
-    }
-
-    public virtual ModManagementConfig? GetModManagementConfig()
-    {
-        return null;
-    }
-
-    public virtual GameImportConfig? GetGameImportConfig()
-    {
-        return null;
-    }
-
-    public virtual RunGameConfig? GetRunGameConfig()
-    {
-        return null;
-    }
+    public virtual GeneralConfig? GetGeneralConfig() => null;
+
+    public virtual PackageConfig? GetPackageMeta() => null;
+
+    public virtual InitConfig? GetInitConfig() => null;
+
+    public virtual BuildConfig? GetBuildConfig() => null;
+
+    public virtual PublishConfig? GetPublishConfig() => null;
+
+    public virtual InstallConfig? GetInstallConfig() => null;
+
+    public virtual AuthConfig? GetAuthConfig() => null;
+
+    public virtual ModManagementConfig? GetModManagementConfig() => null;
+
+    public virtual GameImportConfig? GetGameImportConfig() => null;
+
+    public virtual RunGameConfig? GetRunGameConfig() => null;
 }
diff --git a/ThunderstoreCLI/Configuration/EnvironmentConfig.cs b/ThunderstoreCLI/Configuration/EnvironmentConfig.cs
index 3d64dbf..e1d571e 100644
--- a/ThunderstoreCLI/Configuration/EnvironmentConfig.cs
+++ b/ThunderstoreCLI/Configuration/EnvironmentConfig.cs
@@ -8,7 +8,7 @@ class EnvironmentConfig : EmptyConfig
 
     public override AuthConfig GetAuthConfig()
     {
-        return new AuthConfig()
+        return new AuthConfig
         {
             AuthToken = ReadEnv(AUTH_TOKEN)
         };
diff --git a/ThunderstoreCLI/Configuration/IConfigProvider.cs b/ThunderstoreCLI/Configuration/IConfigProvider.cs
index 89b2e70..956275a 100644
--- a/ThunderstoreCLI/Configuration/IConfigProvider.cs
+++ b/ThunderstoreCLI/Configuration/IConfigProvider.cs
@@ -9,6 +9,7 @@ public interface IConfigProvider
     InitConfig? GetInitConfig();
     BuildConfig? GetBuildConfig();
     PublishConfig? GetPublishConfig();
+    InstallConfig? GetInstallConfig();
     AuthConfig? GetAuthConfig();
     ModManagementConfig? GetModManagementConfig();
     GameImportConfig? GetGameImportConfig();
diff --git a/ThunderstoreCLI/Configuration/ProjectFileConfig.cs b/ThunderstoreCLI/Configuration/ProjectFileConfig.cs
index 33323a3..872e634 100644
--- a/ThunderstoreCLI/Configuration/ProjectFileConfig.cs
+++ b/ThunderstoreCLI/Configuration/ProjectFileConfig.cs
@@ -1,5 +1,4 @@
 using ThunderstoreCLI.Models;
-using ThunderstoreCLI.Utils;
 using static Crayon.Output;
 
 namespace ThunderstoreCLI.Configuration;
@@ -24,17 +23,17 @@ public override void Parse(Config currentConfig)
         Project = ThunderstoreProject.Deserialize(File.ReadAllText(SourcePath))!;
     }
 
-    public override GeneralConfig? GetGeneralConfig()
+    public override GeneralConfig GetGeneralConfig()
     {
-        return new GeneralConfig()
+        return new GeneralConfig
         {
             Repository = Project.Publish?.Repository!
         };
     }
 
-    public override PackageConfig? GetPackageMeta()
+    public override PackageConfig GetPackageMeta()
     {
-        return new PackageConfig()
+        return new PackageConfig
         {
             Namespace = Project.Package?.Namespace,
             Name = Project.Package?.Name,
@@ -47,26 +46,38 @@ public override void Parse(Config currentConfig)
         };
     }
 
-    public override BuildConfig? GetBuildConfig()
+    public override BuildConfig GetBuildConfig()
     {
-        return new BuildConfig()
+        return new BuildConfig
         {
-            CopyPaths = Project.Build?.CopyPaths.Select(static path => new CopyPathMap(path.Source, path.Target)).ToList(),
+            CopyPaths = Project.Build?.CopyPaths
+                .Select(static path => new CopyPathMap(path.Source, path.Target))
+                .ToList(),
             IconPath = Project.Build?.Icon,
             OutDir = Project.Build?.OutDir,
             ReadmePath = Project.Build?.Readme
         };
     }
 
-    public override PublishConfig? GetPublishConfig()
+    public override PublishConfig GetPublishConfig()
     {
-        return new PublishConfig()
+        return new PublishConfig
         {
             Categories = Project.Publish?.Categories.Categories,
             Communities = Project.Publish?.Communities
         };
     }
 
+    public override InstallConfig GetInstallConfig()
+    {
+        return new InstallConfig
+        {
+            InstallerDeclarations = Project.Install?.InstallerDeclarations
+                .Select(static path => new InstallerDeclaration(path.Identifier))
+                .ToList()
+        };
+    }
+
     public static void Write(Config config, string path)
     {
         File.WriteAllText(path, new ThunderstoreProject(config).Serialize());
diff --git a/ThunderstoreCLI/Game/ModProfile.cs b/ThunderstoreCLI/Game/ModProfile.cs
index 5a43fb0..86d52f5 100644
--- a/ThunderstoreCLI/Game/ModProfile.cs
+++ b/ThunderstoreCLI/Game/ModProfile.cs
@@ -1,5 +1,3 @@
-using System.Diagnostics.CodeAnalysis;
-using System.Text.Json.Serialization;
 using ThunderstoreCLI.Models;
 
 namespace ThunderstoreCLI.Game;
diff --git a/ThunderstoreCLI/Models/BaseToml.cs b/ThunderstoreCLI/Models/BaseToml.cs
index b69d16c..644e0ab 100644
--- a/ThunderstoreCLI/Models/BaseToml.cs
+++ b/ThunderstoreCLI/Models/BaseToml.cs
@@ -8,5 +8,5 @@ public abstract class BaseToml<[DynamicallyAccessedMembers(DynamicallyAccessedMe
 {
     public string Serialize() => TomletMain.TomlStringFrom(this);
 
-    public static T? Deserialize(string toml) => TomletMain.To<T>(toml);
+    public static T Deserialize(string toml) => TomletMain.To<T>(toml);
 }
diff --git a/ThunderstoreCLI/Models/SchemaResponse.cs b/ThunderstoreCLI/Models/SchemaResponse.cs
index ab607d8..8376a3b 100644
--- a/ThunderstoreCLI/Models/SchemaResponse.cs
+++ b/ThunderstoreCLI/Models/SchemaResponse.cs
@@ -1,6 +1,5 @@
 using ThunderstoreCLI.Configuration;
 using ThunderstoreCLI.Game;
-using ThunderstoreCLI.Utils;
 
 namespace ThunderstoreCLI.Models;
 
diff --git a/ThunderstoreCLI/Models/ThunderstoreProject.cs b/ThunderstoreCLI/Models/ThunderstoreProject.cs
index 6b09b7a..f26e4b5 100644
--- a/ThunderstoreCLI/Models/ThunderstoreProject.cs
+++ b/ThunderstoreCLI/Models/ThunderstoreProject.cs
@@ -45,20 +45,21 @@ public class ConfigData
     public class PackageData
     {
         [TomlProperty("namespace")]
-        public string Namespace { get; set; } = "AuthorName";
+        public string? Namespace { get; set; }
         [TomlProperty("name")]
-        public string Name { get; set; } = "PackageName";
+        public string? Name { get; set; }
         [TomlProperty("versionNumber")]
-        public string VersionNumber { get; set; } = "0.0.1";
+        public string? VersionNumber { get; set; }
         [TomlProperty("description")]
-        public string Description { get; set; } = "Example mod description";
+        public string? Description { get; set; }
         [TomlProperty("websiteUrl")]
-        public string WebsiteUrl { get; set; } = "https://thunderstore.io";
+        public string? WebsiteUrl { get; set; }
         [TomlProperty("containsNsfwContent")]
         public bool ContainsNsfwContent { get; set; } = false;
+
         [TomlProperty("dependencies")]
         [TomlDoNotInlineObject]
-        public Dictionary<string, string> Dependencies { get; set; } = new() { { "AuthorName-PackageName", "0.0.1" } };
+        public Dictionary<string, string> Dependencies { get; set; } = new();
     }
     [TomlProperty("package")]
     public PackageData? Package { get; set; }
@@ -67,23 +68,23 @@ public class PackageData
     public class BuildData
     {
         [TomlProperty("icon")]
-        public string Icon { get; set; } = "./icon.png";
+        public string? Icon { get; set; }
         [TomlProperty("readme")]
-        public string Readme { get; set; } = "./README.md";
+        public string? Readme { get; set; }
         [TomlProperty("outdir")]
-        public string OutDir { get; set; } = "./build";
+        public string? OutDir { get; set; }
 
         [TomlDoNotInlineObject]
         public class CopyPath
         {
             [TomlProperty("source")]
-            public string Source { get; set; } = "./dist";
+            public string? Source { get; set; }
             [TomlProperty("target")]
-            public string Target { get; set; } = "";
+            public string? Target { get; set; }
         }
 
         [TomlProperty("copy")]
-        public CopyPath[] CopyPaths { get; set; } = new CopyPath[] { new CopyPath() };
+        public CopyPath[] CopyPaths { get; set; } = Array.Empty<CopyPath>();
     }
     [TomlProperty("build")]
     public BuildData? Build { get; set; }
@@ -92,26 +93,37 @@ public class CopyPath
     public class PublishData
     {
         [TomlProperty("repository")]
-        public string Repository { get; set; } = "https://thunderstore.io";
+        public string? Repository { get; set; }
+
         [TomlProperty("communities")]
-        public string[] Communities { get; set; } =
-        {
-            "riskofrain2"
-        };
+        public string[] Communities { get; set; } = Array.Empty<string>();
 
         [TomlProperty("categories")]
         [TomlDoNotInlineObject]
         public CategoryDictionary Categories { get; set; } = new()
         {
-            Categories = new Dictionary<string, string[]>
-            {
-                { "riskofrain2", new[] { "items", "skills" } }
-            }
+            Categories = new Dictionary<string, string[]>(),
         };
     }
     [TomlProperty("publish")]
     public PublishData? Publish { get; set; }
 
+    [TomlDoNotInlineObject]
+    public class InstallData
+    {
+        [TomlDoNotInlineObject]
+        public class InstallerDeclaration
+        {
+            [TomlProperty("identifier")]
+            public string? Identifier { get; set; }
+        }
+
+        [TomlProperty("installers")]
+        public InstallerDeclaration[] InstallerDeclarations { get; set; } = Array.Empty<InstallerDeclaration>();
+    }
+    [TomlProperty("install")]
+    public InstallData? Install { get; set; }
+
     public ThunderstoreProject() { }
 
     public ThunderstoreProject(bool initialize)
@@ -122,27 +134,41 @@ public ThunderstoreProject(bool initialize)
         Package = new PackageData();
         Build = new BuildData();
         Publish = new PublishData();
+        Install = new InstallData();
     }
 
     public ThunderstoreProject(Config config)
     {
-        Package = new PackageData()
+        Package = new PackageData
         {
             Namespace = config.PackageConfig.Namespace!,
-            Name = config.PackageConfig.Name!
+            Name = config.PackageConfig.Name!,
+            VersionNumber = config.PackageConfig.VersionNumber!,
+            Description = config.PackageConfig.Description!,
+            WebsiteUrl = config.PackageConfig.WebsiteUrl!,
+            ContainsNsfwContent = config.PackageConfig.ContainsNsfwContent.GetValueOrDefault(false),
+            Dependencies = config.PackageConfig.Dependencies!
         };
-        Build = new BuildData()
+        Build = new BuildData
         {
-            Icon = config.GetPackageIconPath(),
-            OutDir = config.GetBuildOutputDir(),
-            Readme = config.GetPackageReadmePath(),
-            CopyPaths = config.BuildConfig.CopyPaths!.Select(x => new BuildData.CopyPath { Source = x.From, Target = x.To }).ToArray()!
+            Icon = config.BuildConfig.IconPath!,
+            OutDir = config.BuildConfig.OutDir!,
+            Readme = config.BuildConfig.ReadmePath!,
+            CopyPaths = config.BuildConfig.CopyPaths!
+                .Select(x => new BuildData.CopyPath { Source = x.From, Target = x.To })
+                .ToArray()
         };
-        Publish = new PublishData()
+        Publish = new PublishData
         {
             Categories = new CategoryDictionary { Categories = config.PublishConfig.Categories! },
             Communities = config.PublishConfig.Communities!,
             Repository = config.GeneralConfig.Repository
         };
+        Install = new InstallData
+        {
+            InstallerDeclarations = config.InstallConfig.InstallerDeclarations!
+                .Select(x => new InstallData.InstallerDeclaration { Identifier = x.Identifier })
+                .ToArray()
+        };
     }
 }
diff --git a/ThunderstoreCLI/Options.cs b/ThunderstoreCLI/Options.cs
index 9a3a14f..f476bbe 100644
--- a/ThunderstoreCLI/Options.cs
+++ b/ThunderstoreCLI/Options.cs
@@ -30,7 +30,7 @@ public virtual bool Validate()
     {
         if (!Directory.Exists(TcliDirectory))
         {
-            Directory.CreateDirectory(TcliDirectory!);
+            Directory.CreateDirectory(TcliDirectory);
         }
 
         return true;
diff --git a/ThunderstoreCLI/PackageManifestV1.cs b/ThunderstoreCLI/PackageManifestV1.cs
index 3ea2b1b..858769a 100644
--- a/ThunderstoreCLI/PackageManifestV1.cs
+++ b/ThunderstoreCLI/PackageManifestV1.cs
@@ -23,9 +23,19 @@ public class PackageManifestV1 : BaseJson<PackageManifestV1>
     [JsonProperty("website_url")]
     public string? WebsiteUrl { get; set; }
 
+    [JsonProperty("installers")]
+    public InstallerDeclaration[]? Installers { get; set; }
+
     private string? fullName;
+    [JsonIgnore]
     public string FullName => fullName ??= $"{Namespace}-{Name}";
 
+    public class InstallerDeclaration
+    {
+        [JsonProperty("identifier")]
+        public string? Identifier { get; set; }
+    }
+
     public PackageManifestV1() { }
 
     public PackageManifestV1(PackageVersionData version)
diff --git a/ThunderstoreCLI/Program.cs b/ThunderstoreCLI/Program.cs
index 3b5d9a4..d99679d 100644
--- a/ThunderstoreCLI/Program.cs
+++ b/ThunderstoreCLI/Program.cs
@@ -1,6 +1,5 @@
 using System.Diagnostics;
 using CommandLine;
-using ThunderstoreCLI.Models;
 using ThunderstoreCLI.Utils;
 
 namespace ThunderstoreCLI;
diff --git a/ThunderstoreCLI/ThunderstoreCLI.csproj b/ThunderstoreCLI/ThunderstoreCLI.csproj
index 7fdeeb0..ba326b1 100644
--- a/ThunderstoreCLI/ThunderstoreCLI.csproj
+++ b/ThunderstoreCLI/ThunderstoreCLI.csproj
@@ -3,7 +3,7 @@
     <PropertyGroup>
         <OutputType>Exe</OutputType>
         <TargetFrameworks>net7.0;net6.0</TargetFrameworks>
-        <LangVersion>11</LangVersion>
+        <LangVersion>12</LangVersion>
         <RollForward>Major</RollForward>
         <RootNamespace>ThunderstoreCLI</RootNamespace>
         <AssemblyName>tcli</AssemblyName>
diff --git a/ThunderstoreCLI/Utils/SteamUtils.cs b/ThunderstoreCLI/Utils/SteamUtils.cs
index d7f703b..990b468 100644
--- a/ThunderstoreCLI/Utils/SteamUtils.cs
+++ b/ThunderstoreCLI/Utils/SteamUtils.cs
@@ -1,6 +1,5 @@
 using System.Runtime.InteropServices;
 using System.Runtime.Versioning;
-using System.Security.AccessControl;
 using System.Text.RegularExpressions;
 using Microsoft.Win32;
 
@@ -154,7 +153,7 @@ public static bool IsProtonGame(string steamAppId)
         return Path.Combine(steamDir, "steamapps");
     }
 
-    private static string? FindSteamDirectoryOsx()
+    private static string FindSteamDirectoryOsx()
     {
         return Path.Combine(
             Environment.GetFolderPath(Environment.SpecialFolder.UserProfile),