added windows app sdk fetching and bundling into the installer

Installer/Program.cs

@@ -116,6 +116,9 @@ public class BootstrapperOptions : SharedOptions
     [Option('m', "msi-path", Required = true, HelpText = "Path to the MSI package to embed")]
     public string MsiPath { get; set; }
 
+    [Option('w', "windows-app-sdk-path", Required = true, HelpText = "Path to the Windows App Sdk package to embed")]
+    public string WindowsAppSdkPath { get; set; }
+
     public new void Validate()
     {
         base.Validate();
@@ -124,6 +127,8 @@ public class BootstrapperOptions : SharedOptions
             throw new ArgumentException($"Logo PNG file not found at '{LogoPng}'", nameof(LogoPng));
         if (!SystemFile.Exists(MsiPath))
             throw new ArgumentException($"MSI package not found at '{MsiPath}'", nameof(MsiPath));
+        if (!SystemFile.Exists(WindowsAppSdkPath))
+            throw new ArgumentException($"Windows App Sdk package not found at '{WindowsAppSdkPath}'", nameof(WindowsAppSdkPath));
     }
 }
 
@@ -337,16 +342,11 @@ private static int BuildBundle(BootstrapperOptions opts)
     {
         opts.Validate();
 
-        if (!DotNetRuntimePackagePayloads.TryGetValue(opts.Platform, out var payload))
+        if (!DotNetRuntimePackagePayloads.TryGetValue(opts.Platform, out var dotNetRuntimePayload))
             throw new ArgumentException($"Invalid architecture '{opts.Platform}' specified", nameof(opts.Platform));
 
-        // TODO: it would be nice to include the WindowsAppRuntime but
-        //       Microsoft makes it difficult to check from a regular
-        //       installer:
-        //       https://learn.microsoft.com/en-us/windows/apps/windows-app-sdk/check-windows-app-sdk-versions
-        //       https://github.com/microsoft/WindowsAppSDK/discussions/2437
         var bundle = new Bundle(ProductName,
-            new ExePackage
+            new ExePackage // .NET Runtime
             {
                 PerMachine = true,
                 // Don't uninstall the runtime when the bundle is uninstalled.
@@ -362,7 +362,28 @@ private static int BuildBundle(BootstrapperOptions opts)
                 // anyway. The MSI will fatally exit if the runtime really isn't
                 // available, and the user can install it themselves.
                 Vital = false,
-                Payloads = [payload],
+                Payloads = [dotNetRuntimePayload],
+            },
+            // TODO: right now we are including the Windows App Sdk in the bundle
+            //       and always install it
+            //       Microsoft makes it difficult to check if it exists from a regular installer:
+            //       https://learn.microsoft.com/en-us/windows/apps/windows-app-sdk/check-windows-app-sdk-versions
+            //       https://github.com/microsoft/WindowsAppSDK/discussions/2437
+            new ExePackage // Windows App Sdk
+            {
+                PerMachine = true,
+                Permanent = true,
+                Cache = PackageCacheAction.remove,
+                // There is no license agreement for this SDK.
+                InstallArguments = "--quiet",
+                Vital = false,
+                Payloads =
+                [
+                    new ExePackagePayload
+                    {
+                        SourceFile = opts.WindowsAppSdkPath
+                    }
+                ],
             },
             new MsiPackage(opts.MsiPath)
             {

scripts/Get-WindowsAppSdk.ps1

@@ -0,0 +1,34 @@
+# Usage: Get-WindowsAppSdk.ps1 -arch <x64|arm64>
+param (
+    [ValidateSet("x64", "arm64")]
+    [Parameter(Mandatory = $true)]
+    [string] $arch
+)
+
+function Download-File([string] $url, [string] $outputPath, [string] $etagFile) {
+    Write-Host "Downloading '$url' to '$outputPath'"
+    # We use `curl.exe` here because `Invoke-WebRequest` is notoriously slow.
+    & curl.exe `
+        --progress-bar `
+        -v `
+        --show-error `
+        --fail `
+        --location `
+        --etag-compare $etagFile `
+        --etag-save $etagFile `
+        --output $outputPath `
+        $url
+    if ($LASTEXITCODE -ne 0) { throw "Failed to download $url" }
+    if (!(Test-Path $outputPath) -or (Get-Item $outputPath).Length -eq 0) {
+        throw "Failed to download '$url', output file '$outputPath' is missing or empty"
+    }
+}
+
+# Download the Windows App Sdk binary from Microsoft for this platform if we don't have
+# it yet (or it's different).
+$windowsAppSdkMajorVersion = "1.6"
+$windowsAppSdkFullVersion = "1.6.250228001"
+$windowsAppSdkPath = Join-Path $PSScriptRoot "files\windows-app-sdk-$($arch).exe"
+$windowsAppSdkUri = "https://aka.ms/windowsappsdk/$($windowsAppSdkMajorVersion)/$($windowsAppSdkFullVersion)/windowsappruntimeinstall-$($arch).exe"
+$windowsAppSdkEtagFile = $windowsAppSdkPath + ".etag"
+Download-File $windowsAppSdkUri $windowsAppSdkPath $windowsAppSdkEtagFile

scripts/Publish.ps1

@@ -175,6 +175,10 @@ Copy-Item $mutagenAgentsSrcPath $mutagenAgentsDestPath
 if ($LASTEXITCODE -ne 0) { throw "Failed to build MSI" }
 Add-CoderSignature $msiOutputPath
 
+$getWindowsAppSdk = Join-Path $scriptRoot "Get-WindowsAppSdk.ps1"
+& $getWindowsAppSdk -arch $arch
+$windowsAppSdkPath = Join-Path $scriptRoot "files\windows-app-sdk-$($arch).exe"
+
 # Build the bootstrapper
 & dotnet.exe run --project .\Installer\Installer.csproj -c Release -- `
     build-bootstrapper `
@@ -184,6 +188,7 @@ Add-CoderSignature $msiOutputPath
     --output-path $outputPath `
     --icon-file "App\coder.ico" `
     --msi-path $msiOutputPath `
+    --windows-app-sdk-path $windowsAppSdkPath `
     --logo-png "scripts\files\logo.png"
 if ($LASTEXITCODE -ne 0) { throw "Failed to build bootstrapper" }
 

scripts/files/.gitignore

@@ -1,3 +1,4 @@
 mutagen-*.tar.gz
 mutagen-*.exe
 *.etag
+windows-app-sdk-*.exe