Bump version to 1.6.3 (CI bootstrap restore fix)

msbuild /t:Restore on a .slnx silently no-ops on packages.config-
style references (it only handles PackageReference by default).
Switch Bootstrap.ps1 to call nuget.exe restore <packages.config>
directly when its on PATH (which it is in CI after Setup NuGet);
falls back to msbuild RestorePackagesConfig=true otherwise.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: Spruill-1

Bootstrap.ps1

@@ -36,15 +36,34 @@ try {
     Write-Host "[2/4] Ensuring third_party/exprtk/exprtk.hpp..."
     & "$Repo\scripts\EnsureExprTk.ps1" -TargetDir "$Repo\third_party\exprtk"
 
-    # 3. NuGet restore (packages.config style).
+    # 3. NuGet restore.
+    #    The repo uses packages.config (NOT PackageReference). MSBuild's
+    #    /t:Restore target on a .slnx silently no-ops on packages.config
+    #    style ("Nothing to do. None of the projects specified contain
+    #    packages to restore.") even though the manifest is right there.
+    #    Use nuget.exe directly against the root packages.config -- that
+    #    path explicitly supports packages.config and is what NuGet
+    #    documents for this scenario. Falls back to msbuild if nuget.exe
+    #    isn't on PATH.
     Write-Host "[3/4] Restoring NuGet packages..."
     $msbuild = "${env:ProgramFiles}\Microsoft Visual Studio\2022\Community\MSBuild\Current\Bin\MSBuild.exe"
     if (-not (Test-Path $msbuild)) {
         $msbuild = 'msbuild'  # fall back to PATH
     }
-    & $msbuild ShaderLab.slnx /t:Restore /p:Configuration=$Configuration /p:Platform=$Platform /v:minimal /m /nologo
-    if ($LASTEXITCODE -ne 0) {
-        throw "NuGet restore failed (exit $LASTEXITCODE)"
+
+    $nuget = Get-Command nuget.exe -ErrorAction SilentlyContinue
+    if ($nuget) {
+        & $nuget.Source restore "$Repo\packages.config" -PackagesDirectory "$Repo\packages" -NonInteractive
+        if ($LASTEXITCODE -ne 0) {
+            throw "NuGet restore failed (exit $LASTEXITCODE)"
+        }
+    } else {
+        # MSBuild fallback path. Requires VS to be configured with the
+        # NuGet packages.config restore feature; not the default in CI.
+        & $msbuild ShaderLab.slnx /t:Restore /p:RestorePackagesConfig=true /p:Configuration=$Configuration /p:Platform=$Platform /v:minimal /m /nologo
+        if ($LASTEXITCODE -ne 0) {
+            throw "NuGet restore failed (exit $LASTEXITCODE)"
+        }
     }
 
     # 4. Smoke build (optional, off by default).

CHANGELOG.md

@@ -5,6 +5,12 @@ Format follows [Keep a Changelog](https://keepachangelog.com/).
 
 ## [Unreleased]
 
+## [1.6.3] - 2026-05-08
+
+### Fixed
+
+- **CI Bootstrap.ps1: package restore was a silent no-op on packages.config.** `msbuild /t:Restore` against `ShaderLab.slnx` reports "Nothing to do. None of the projects specified contain packages to restore." for packages.config-style references — it only handles PackageReference by default. The downstream build then failed because `Microsoft.Windows.CppWinRT.props` (from a missing package) couldn't be imported. Switched Bootstrap.ps1 to call `nuget.exe restore <packages.config> -PackagesDirectory packages` directly when nuget.exe is on PATH (which it is in the CI smoke job after `Setup NuGet`); falls back to `msbuild /t:Restore /p:RestorePackagesConfig=true` when not. Also fixes the same shape of bug on `EnsureExprTk.ps1`'s missing `TargetDir` arg (folded into 1.6.2 conceptually but only manifested after the cert fix unblocked CI past step 1).
+
 ## [1.6.2] - 2026-05-08
 
 ### Fixed

Package.appxmanifest

@@ -9,7 +9,7 @@
   <Identity
     Name="ShaderLab"
     Publisher="CN=ShaderLab"
-    Version="1.6.2.0" />
+    Version="1.6.3.0" />
 
   <mp:PhoneIdentity PhoneProductId="a1b2c3d4-e5f6-7890-abcd-ef1234567890" PhonePublisherId="00000000-0000-0000-0000-000000000000"/>
 

Version.h

@@ -14,10 +14,10 @@ namespace ShaderLab
 {
     constexpr uint32_t VersionMajor = 1;
     constexpr uint32_t VersionMinor = 6;
-    constexpr uint32_t VersionPatch = 2;
+    constexpr uint32_t VersionPatch = 3;
 
     // Human-readable version string.
-    constexpr const wchar_t* VersionString = L"1.6.2";
+    constexpr const wchar_t* VersionString = L"1.6.3";
 
     // Graph format version. Increment when serialization format changes.
     // Graphs saved with a higher format version cannot be loaded by older apps.