From 2864a3fbd5fdc52f102987046dce600e9c06ddf8 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Thu, 28 May 2026 12:31:41 +0000
Subject: [PATCH 1/4] Initial plan


From 39440b92d04936914ea298fa28b897fb6abe855b Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Thu, 28 May 2026 12:35:22 +0000
Subject: [PATCH 2/4] Remove obsolete vs-extension package overrides

Co-authored-by: timotheeguerin <1031227+timotheeguerin@users.noreply.github.com>
---
 .../typespec-vs/src/Microsoft.TypeSpec.VS.csproj     | 12 ------------
 1 file changed, 12 deletions(-)

diff --git a/packages/typespec-vs/src/Microsoft.TypeSpec.VS.csproj b/packages/typespec-vs/src/Microsoft.TypeSpec.VS.csproj
index 804b1067d02..d8c02f42255 100644
--- a/packages/typespec-vs/src/Microsoft.TypeSpec.VS.csproj
+++ b/packages/typespec-vs/src/Microsoft.TypeSpec.VS.csproj
@@ -31,10 +31,6 @@
       Link="TextMate/typespec.tmLanguage" />
     <Content Update="@(Content)" IncludeInVSIX="true" CopyToOutputDirectory="PreserveNewest" />
     <Reference Include="System.ComponentModel.Composition" />
-    <!-- The 'MessagePack' is not used directly but referenced by nuget package 'Microsoft.VisualStudio.SDK', 'Microsoft.VisualStudio.Workspace' and 'Microsoft.VisualStudio.VSIntegration' -->
-    <!-- Have to add it explicitly here because the version used by 'Microsoft.VisualStudio...' report vulnerabilities now -->
-    <!-- TODO: [#5368] remove this explicit reference after 'Microsoft.VisualStudio...' releases new version having 'MessagePack' updated to vulnerability free version-->
-    <PackageReference Include="MessagePack" Version="2.5.192" />
     <PackageReference Include="Microsoft.NETFramework.ReferenceAssemblies" Version="1.0.2" />
     <Content Include="Icons\logo.png">
       <CopyToOutputDirectory>Always</CopyToOutputDirectory>
@@ -47,16 +43,8 @@
     </Content>
   </ItemGroup>
   <ItemGroup>
-    <!-- The 'Microsoft.VisualStudio.Composition' is not used directly but referenced by nuget package 'Microsoft.VisualStudio.Workspace' -->
-    <!-- Have to add it explicitly here because otherwise 'Microsoft.VisualStudio.Workspace" will report warning NU1603 because its desired version not found and higher version will be used -->
-    <!-- TODO: [#5368] remove this explicit reference after 'Microsoft.VisualStudio...' releases new version without the warning-->
-    <PackageReference Include="Microsoft.VisualStudio.Composition" Version="17.13.41" />
     <!-- Use 17.0.x or latest 16.x if no 17.0.x for compatible API-->
     <PackageReference Include="Microsoft.VisualStudio.SDK" Version="17.14.40265" ExcludeAssets="Runtime" />
-    <!-- The 'Microsoft.VisualStudio.Shell.15.0' is not used directly but referenced by nuget package 'Microsoft.VisualStudio.Workspace.VSIntegration' -->
-    <!-- Have to add it explicitly here because otherwise 'Microsoft.VisualStudio.Workspace.VSIntegration" will report warning NU1603 because its desired version not found and higher version will be used -->
-    <!-- TODO: [#5368] remove this explicit reference after 'Microsoft.VisualStudio...' releases new version without the warning-->
-    <PackageReference Include="Microsoft.VisualStudio.Shell.15.0" Version="17.14.40264" />
     <PackageReference Include="Microsoft.VisualStudio.Workspace" Version="17.12.19" ExcludeAssets="Runtime" />
     <PackageReference Include="Microsoft.VisualStudio.Workspace.VSIntegration" Version="17.12.19" ExcludeAssets="Runtime" />
     <!-- https://github.com/advisories/GHSA-w3q9-fxm7-j8fq -->

From 4d6e3259fca721e6a3f6089b41a58a641ab72446 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Thu, 28 May 2026 12:49:28 +0000
Subject: [PATCH 3/4] Add typespec-vs changelog entry

Co-authored-by: timotheeguerin <1031227+timotheeguerin@users.noreply.github.com>
---
 packages/typespec-vs/CHANGELOG.md | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/packages/typespec-vs/CHANGELOG.md b/packages/typespec-vs/CHANGELOG.md
index eb8a840a2f2..62acde5bc06 100644
--- a/packages/typespec-vs/CHANGELOG.md
+++ b/packages/typespec-vs/CHANGELOG.md
@@ -2,7 +2,9 @@
 
 ## 1.12.0
 
-No changes, version bump only.
+### Bug Fixes
+
+- Remove obsolete explicit Visual Studio transitive NuGet package overrides.
 
 ## 1.11.0
 

From 776ad896addb4b04c061390bb44ed74abac61d17 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Thu, 28 May 2026 13:00:30 +0000
Subject: [PATCH 4/4] Use Chronus change file for typespec-vs

Co-authored-by: timotheeguerin <1031227+timotheeguerin@users.noreply.github.com>
---
 ...-remove-unnecessary-nuget-package-2026-4-28-12-59-38.md | 7 +++++++
 packages/typespec-vs/CHANGELOG.md                          | 4 +---
 2 files changed, 8 insertions(+), 3 deletions(-)
 create mode 100644 .chronus/changes/copilot-remove-unnecessary-nuget-package-2026-4-28-12-59-38.md

diff --git a/.chronus/changes/copilot-remove-unnecessary-nuget-package-2026-4-28-12-59-38.md b/.chronus/changes/copilot-remove-unnecessary-nuget-package-2026-4-28-12-59-38.md
new file mode 100644
index 00000000000..b8e1f4edbc2
--- /dev/null
+++ b/.chronus/changes/copilot-remove-unnecessary-nuget-package-2026-4-28-12-59-38.md
@@ -0,0 +1,7 @@
+---
+changeKind: fix
+packages:
+  - typespec-vs
+---
+
+Remove obsolete explicit Visual Studio transitive NuGet package overrides.
\ No newline at end of file
diff --git a/packages/typespec-vs/CHANGELOG.md b/packages/typespec-vs/CHANGELOG.md
index 62acde5bc06..eb8a840a2f2 100644
--- a/packages/typespec-vs/CHANGELOG.md
+++ b/packages/typespec-vs/CHANGELOG.md
@@ -2,9 +2,7 @@
 
 ## 1.12.0
 
-### Bug Fixes
-
-- Remove obsolete explicit Visual Studio transitive NuGet package overrides.
+No changes, version bump only.
 
 ## 1.11.0