Use System.CommandLine for CLI parsing (#888)

paket.dependencies

@@ -10,7 +10,6 @@ storage: none
 
 github TheAngryByrd/FsLibLog:f81cba440bf0476bb4e2262b57a067a0d6ab78a7 src/FsLibLog/FsLibLog.fs
 
-nuget Argu
 nuget Fantomas.Client
 nuget FSharp.Compiler.Service
 nuget Ionide.ProjInfo
@@ -27,7 +26,7 @@ nuget Mono.Cecil >= 0.10.0-beta7
 nuget Newtonsoft.Json
 # nuget Fake.Runtime prerelease
 nuget FSharpLint.Core
-nuget FSharp.Core
+nuget FSharp.Core content: none
 nuget Dapper
 nuget Microsoft.Data.Sqlite 2.2.4
 nuget Microsoft.Data.Sqlite.Core 2.2.4
@@ -44,6 +43,7 @@ nuget FSharp.Formatting
 nuget FsToolkit.ErrorHandling
 nuget FSharpx.Async
 nuget CliWrap
+nuget System.CommandLine prerelease
 
 nuget Microsoft.NET.Test.Sdk
 nuget Dotnet.ReproducibleBuilds copy_local:true

paket.lock

@@ -3,9 +3,6 @@ RESTRICTION: || (== net6.0) (== netstandard2.0)
 NUGET
   remote: https://api.nuget.org/v3/index.json
     altcover (8.2.837)
-    Argu (6.1.1)
-      FSharp.Core (>= 4.3.2)
-      System.Configuration.ConfigurationManager (>= 4.4)
     CliWrap (3.4.2)
       Microsoft.Bcl.AsyncInterfaces (>= 6.0) - restriction: || (&& (== net6.0) (>= net461)) (&& (== net6.0) (< netstandard2.1)) (== netstandard2.0)
       System.Buffers (>= 4.5.1) - restriction: || (&& (== net6.0) (>= net461)) (&& (== net6.0) (< netstandard2.1)) (== netstandard2.0)
@@ -67,7 +64,7 @@ NUGET
     FSharp.Control.Reactive (5.0.2) - restriction: || (== net6.0) (&& (== netstandard2.0) (>= net6.0))
       FSharp.Core (>= 4.7.2)
       System.Reactive (>= 5.0)
-    FSharp.Core (6.0.3)
+    FSharp.Core (6.0.3) - content: none
     FSharp.Formatting (15.0)
       FSharp.Compiler.Service (41.0.3) - restriction: || (== net6.0) (&& (== netstandard2.0) (>= netstandard2.1))
     FSharp.UMX (1.1)
@@ -92,7 +89,8 @@ NUGET
       FSharp.Core (>= 4.7.2)
     GitHubActionsTestLogger (1.3)
       Microsoft.TestPlatform.ObjectModel (>= 17.0)
-    ICSharpCode.Decompiler (7.2.0.6844)
+    ICSharpCode.Decompiler (7.2.1.6856)
+      Microsoft.Win32.Registry (>= 5.0)
       System.Collections.Immutable (>= 5.0)
       System.Reflection.Metadata (>= 5.0)
     Ionide.KeepAChangelog.Tasks (0.1.6) - copy_local: true
@@ -224,7 +222,9 @@ NUGET
       Microsoft.NETCore.Platforms (>= 1.1)
       Microsoft.NETCore.Targets (>= 1.1)
       System.Runtime (>= 4.3)
-    Microsoft.Win32.Registry (5.0) - copy_local: false
+    Microsoft.Win32.Registry (5.0)
+      System.Buffers (>= 4.5.1) - restriction: || (&& (== net6.0) (>= monoandroid) (< netstandard1.3)) (&& (== net6.0) (>= monotouch)) (&& (== net6.0) (< netcoreapp2.0)) (&& (== net6.0) (>= xamarinios)) (&& (== net6.0) (>= xamarinmac)) (&& (== net6.0) (>= xamarintvos)) (&& (== net6.0) (>= xamarinwatchos)) (== netstandard2.0)
+      System.Memory (>= 4.5.4) - restriction: || (&& (== net6.0) (< netcoreapp2.0)) (&& (== net6.0) (< netcoreapp2.1)) (&& (== net6.0) (>= uap10.1)) (== netstandard2.0)
       System.Security.AccessControl (>= 5.0)
       System.Security.Principal.Windows (>= 5.0)
     Microsoft.Win32.SystemEvents (6.0) - restriction: || (== net6.0) (&& (== netstandard2.0) (>= netcoreapp3.1))
@@ -340,6 +340,8 @@ NUGET
     System.Collections.Immutable (6.0)
       System.Memory (>= 4.5.4) - restriction: || (&& (== net6.0) (>= net461)) (== netstandard2.0)
       System.Runtime.CompilerServices.Unsafe (>= 6.0)
+    System.CommandLine (2.0.0-beta3.22114.1)
+      System.Memory (>= 4.5.4) - restriction: == netstandard2.0
     System.Configuration.ConfigurationManager (6.0)
       System.Security.Cryptography.ProtectedData (>= 6.0)
       System.Security.Permissions (>= 6.0)
@@ -550,7 +552,7 @@ NUGET
       System.Resources.ResourceManager (>= 4.3)
       System.Runtime (>= 4.3)
       System.Threading.Tasks (>= 4.3)
-    System.Numerics.Vectors (4.5) - restriction: || (&& (== net6.0) (>= net461)) (&& (== net6.0) (< netcoreapp2.0) (< netstandard2.1)) (== netstandard2.0)
+    System.Numerics.Vectors (4.5) - restriction: || (&& (== net6.0) (< netcoreapp2.0)) (== netstandard2.0)
     System.ObjectModel (4.3)
       System.Collections (>= 4.3)
       System.Diagnostics.Debug (>= 4.3)

src/Directory.Build.props

@@ -5,5 +5,7 @@
     <EmbedUntrackedSources>true</EmbedUntrackedSources>
     <!-- suppress false positive warning FS2003 about invalid version of AssemblyInformationalVersionAttribute -->
     <NoWarn>$(NoWarn);FS2003</NoWarn>
+    <!-- We've got a prerelease dep on System.CommandLine, and NuGet doesn't like that. NuGet can be quiet in this instance. -->
+    <NoWarn>$(NoWarn);NU5104</NoWarn>
   </PropertyGroup>
 </Project>

src/FsAutoComplete.Core/FsAutoComplete.Core.fsproj

@@ -5,6 +5,7 @@
   </PropertyGroup>
   <ItemGroup>
     <ProjectReference Include="..\FsAutoComplete.Logging\FsAutoComplete.Logging.fsproj" />
+    <TrimmerRootAssembly Include="FsAutoComplete.Core" />
   </ItemGroup>
   <ItemGroup>
     <Compile Include="Debug.fs" />

src/FsAutoComplete/FsAutoComplete.fsproj

@@ -12,18 +12,17 @@
     <PackageIcon>logo.png</PackageIcon>
     <PackageProjectUrl>$(RepositoryUrl)</PackageProjectUrl>
     <Authors>FsAutoComplete contributors</Authors>
-    <ErrorOnDuplicatePublishOutputFiles>false</ErrorOnDuplicatePublishOutputFiles>
   </PropertyGroup>
   <ItemGroup>
     <None Include="../../README.md" Pack="true" PackagePath="\" />
     <None Include="logo.png" Pack="true" PackagePath="\" />
-    <Compile Include="Options.fs" />
     <Compile Include="CommandResponse.fs" />
     <Compile Include="JsonSerializer.fs" />
     <Compile Include="LspHelpers.fs" />
     <Compile Include="CodeFixes.fs" />
     <Compile Include="CodeFixes/*.fs" />
     <Compile Include="FsAutoComplete.Lsp.fs" />
+    <Compile Include="Parser.fs" />
     <Compile Include="Program.fs" />
     <None Include="FsAutoComplete.fsproj.paket.references" />
     <Content Include="default.win32manifest">