Update PSReadLine build to target netstandard2.0 (#4584)

By retargeting PSReadLine to `netstandard2.0`, we can simplify the build a lot and produce the same assembly no matter building on Windows or non-Windows. - Update PSReadLine build to target `netstandard2.0`, including the CI and release pipeline YAML files. - Update the test to target `net472` and `net6.0`, so that we can run tests with both .NET Framework and .NET - Rename `Microsoft.PowerShell.PSReadLine2.dll` to `Microsoft.PowerShell.PSReadLine.dll` - Update and clean up the `README.md` with the up-to-date information
PowerShell · Feb 28, 2025 · 49604e8 · 49604e8
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diff --git a/.github/CONTRIBUTING.md b/.github/CONTRIBUTING.md
@@ -65,23 +65,7 @@ Additional references:
 
 ### Bootstrap, Build and Test
 
-To build `PSReadLine` on Windows, Linux, or macOS,
-you must have the following installed:
-
-* .NET Core SDK 2.1.802 or [a newer version](https://www.microsoft.com/net/download)
-* The PowerShell modules `InvokeBuild` and `platyPS`
-
-The build script `build.ps1` can be used to bootstrap, build and test the project.
-
-* Bootstrap: `./build.ps1 -Bootstrap`
-* Build:
-    * Targeting .NET 4.6.2 (Windows only): `./build.ps1 -Configuration Debug -Framework net462`
-    * Targeting .NET Core: `./build.ps1 -Configuration Debug -Framework net6.0`
-* Test:
-    * Targeting .NET 4.6.2 (Windows only): `./build.ps1 -Test -Configuration Debug -Framework net462`
-    * Targeting .NET Core: `./build.ps1 -Test -Configuration Debug -Framework net6.0`
-
-After build, the produced artifacts can be found at `<your-local-repo-root>/bin/Debug`.
+See the [Building](../README.md#building) section in README for details.
 
 ### Submitting Pull Request
 

diff --git a/.pipelines/PSReadLine-Official.yml b/.pipelines/PSReadLine-Official.yml
@@ -114,7 +114,7 @@ extends:
         - pwsh: |
             Write-Host "PS Version: $($($PSVersionTable.PSVersion))"
             Set-Location -Path '$(repoRoot)'
-            .\build.ps1 -Configuration Release -Framework net462
+            .\build.ps1 -Configuration Release
           displayName: Build
           env:
             # Set ob_restore_phase to run this step before '🔒 Setup Signing' step.
@@ -166,7 +166,7 @@ extends:
             TargetFolder: $(ob_outputDirectory)
 
         - pwsh: |
-            $versionInfo = Get-Item "$(signSrcPath)\Microsoft.PowerShell.PSReadLine2.dll" | ForEach-Object VersionInfo
+            $versionInfo = Get-Item "$(signSrcPath)\Microsoft.PowerShell.PSReadLine.dll" | ForEach-Object VersionInfo
             $moduleVersion = $versionInfo.ProductVersion.Split('+')[0]
             $vstsCommandString = "vso[task.setvariable variable=ob_sdl_sbom_packageversion]${moduleVersion}"
 

diff --git a/MockPSConsole/MockPSConsole.csproj b/MockPSConsole/MockPSConsole.csproj
@@ -4,21 +4,18 @@
     <OutputType>Exe</OutputType>
     <RootNamespace>MockPSConsole</RootNamespace>
     <AssemblyName>MockPSConsole</AssemblyName>
-    <TargetFrameworks>net462;net6.0</TargetFrameworks>
+    <TargetFrameworks>net472;net6.0</TargetFrameworks>
     <FileAlignment>512</FileAlignment>
     <ApplicationManifest>Program.manifest</ApplicationManifest>
     <SuppressNETCoreSdkPreviewMessage>true</SuppressNETCoreSdkPreviewMessage>
   </PropertyGroup>
 
-  <ItemGroup Condition="'$(TargetFramework)' == 'net462'">
-    <PackageReference Include="System.Xml.XDocument" version="4.3.0" />
-    <PackageReference Include="System.Data.DataSetExtensions" version="4.5.0" />
-    <PackageReference Include="Microsoft.CSharp" version="4.7.0" />
+  <ItemGroup Condition="'$(TargetFramework)' == 'net472'">
     <PackageReference Include="PowerShellStandard.Library" version="5.1.0" />
   </ItemGroup>
 
   <ItemGroup Condition="'$(TargetFramework)' == 'net6.0'">
-    <PackageReference Include="Microsoft.PowerShell.SDK" version="7.2.23" />
+    <PackageReference Include="Microsoft.PowerShell.SDK" version="7.2.24" />
   </ItemGroup>
 
   <ItemGroup>

diff --git a/PSReadLine.build.ps1 b/PSReadLine.build.ps1
@@ -19,8 +19,8 @@ param(
     [ValidateSet("Debug", "Release")]
     [string]$Configuration = (property Configuration Release),
 
-    [ValidateSet("net462", "net6.0")]
-    [string]$Framework,
+    [ValidateSet("net472", "net6.0")]
+    [string]$TestFramework,
 
     [switch]$CheckHelpContent
 )
@@ -30,71 +30,58 @@ Import-Module "$PSScriptRoot/tools/helper.psm1"
 # Final bits to release go here
 $targetDir = "bin/$Configuration/PSReadLine"
 
-if (-not $Framework)
-{
-    $Framework = if ($PSVersionTable.PSEdition -eq "Core") { "net6.0" } else { "net462" }
+if (-not $TestFramework) {
+    $TestFramework = $IsWindows ? "net472" : "net6.0"
 }
 
-Write-Verbose "Building for '$Framework'" -Verbose
-
 function ConvertTo-CRLF([string] $text) {
     $text.Replace("`r`n","`n").Replace("`n","`r`n")
 }
 
 $polyFillerParams = @{
     Inputs = { Get-ChildItem Polyfill/*.cs, Polyfill/Polyfill.csproj }
-    Outputs = "Polyfill/bin/$Configuration/$Framework/Microsoft.PowerShell.PSReadLine.Polyfiller.dll"
+    Outputs = "Polyfill/bin/$Configuration/netstandard2.0/Microsoft.PowerShell.PSReadLine.Polyfiller.dll"
 }
 
 $binaryModuleParams = @{
     Inputs  = { Get-ChildItem PSReadLine/*.cs, PSReadLine/PSReadLine.csproj, PSReadLine/PSReadLineResources.resx, Polyfill/*.cs, Polyfill/Polyfill.csproj }
-    Outputs = "PSReadLine/bin/$Configuration/$Framework/Microsoft.PowerShell.PSReadLine2.dll"
+    Outputs = "PSReadLine/bin/$Configuration/netstandard2.0/Microsoft.PowerShell.PSReadLine.dll"
 }
 
 $xUnitTestParams = @{
     Inputs = { Get-ChildItem test/*.cs, test/*.json, test/PSReadLine.Tests.csproj }
-    Outputs = "test/bin/$Configuration/$Framework/PSReadLine.Tests.dll"
-}
-
-$mockPSConsoleParams = @{
-    Inputs = { Get-ChildItem MockPSConsole/*.cs, MockPSConsole/Program.manifest, MockPSConsole/MockPSConsole.csproj }
-    Outputs = "MockPSConsole/bin/$Configuration/$Framework/MockPSConsole.dll"
+    Outputs = "test/bin/$Configuration/$TestFramework/PSReadLine.Tests.dll"
 }
 
 <#
 Synopsis: Build the Polyfiller assembly
 #>
-task BuildPolyfiller @polyFillerParams -If ($Framework -eq "net462") {
-    ## Build both "net462" and "net6.0"
-    exec { dotnet publish -f "net462" -c $Configuration Polyfill }
-    exec { dotnet publish -f "net6.0" -c $Configuration Polyfill }
+task BuildPolyfiller @polyFillerParams {
+    exec { dotnet publish -c $Configuration -f 'netstandard2.0' Polyfill }
+    exec { dotnet publish -c $Configuration -f 'net6.0'  Polyfill }
 }
 
 <#
 Synopsis: Build main binary module
 #>
 task BuildMainModule @binaryModuleParams {
-    exec { dotnet publish -f $Framework -c $Configuration PSReadLine }
+    exec { dotnet publish -c $Configuration PSReadLine\PSReadLine.csproj }
 }
 
 <#
 Synopsis: Build xUnit tests
 #>
 task BuildXUnitTests @xUnitTestParams {
-    exec { dotnet publish -f $Framework -c $Configuration test }
-}
-
-<#
-Synopsis: Build the mock powershell console.
-#>
-task BuildMockPSConsole @mockPSConsoleParams {
-    exec { dotnet publish -f $Framework -c $Configuration MockPSConsole }
+    exec { dotnet publish -f $TestFramework -c $Configuration test }
 }
 
 <#
 Synopsis: Run the unit tests
 #>
-task RunTests BuildMainModule, BuildXUnitTests, { Start-TestRun -Configuration $Configuration -Framework $Framework }
+task RunTests BuildMainModule, BuildXUnitTests, {
+    Write-Verbose "Run tests targeting '$TestFramework' ..."
+    Start-TestRun -Configuration $Configuration -Framework $TestFramework
+}
 
 <#
 Synopsis: Check if the help content is in sync.
@@ -128,35 +115,27 @@ task LayoutModule BuildPolyfiller, BuildMainModule, {
         Set-Content -Path (Join-Path $targetDir (Split-Path $file -Leaf)) -Value (ConvertTo-CRLF $content) -Force
     }
 
-    if ($Framework -eq "net462") {
-        if (-not (Test-Path "$targetDir/net462")) {
-            New-Item "$targetDir/net462" -ItemType Directory -Force > $null
-        }
-        if (-not (Test-Path "$targetDir/net6plus")) {
-            New-Item "$targetDir/net6plus" -ItemType Directory -Force > $null
-        }
-
-        Copy-Item "Polyfill/bin/$Configuration/net462/Microsoft.PowerShell.PSReadLine.Polyfiller.dll" "$targetDir/net462" -Force
-        Copy-Item "Polyfill/bin/$Configuration/net6.0/Microsoft.PowerShell.PSReadLine.Polyfiller.dll" "$targetDir/net6plus" -Force
+    if (-not (Test-Path "$targetDir/netstd")) {
+        New-Item "$targetDir/netstd" -ItemType Directory -Force > $null
+    }
+    if (-not (Test-Path "$targetDir/net6plus")) {
+        New-Item "$targetDir/net6plus" -ItemType Directory -Force > $null
     }
 
-    $binPath = "PSReadLine/bin/$Configuration/$Framework/publish"
-    Copy-Item $binPath/Microsoft.PowerShell.PSReadLine2.dll $targetDir
+    Copy-Item "Polyfill/bin/$Configuration/netstandard2.0/Microsoft.PowerShell.PSReadLine.Polyfiller.dll" "$targetDir/netstd" -Force
+    Copy-Item "Polyfill/bin/$Configuration/net6.0/Microsoft.PowerShell.PSReadLine.Polyfiller.dll" "$targetDir/net6plus" -Force
+
+    $binPath = "PSReadLine/bin/$Configuration/netstandard2.0/publish"
+    Copy-Item $binPath/Microsoft.PowerShell.PSReadLine.dll $targetDir
     Copy-Item $binPath/Microsoft.PowerShell.Pager.dll $targetDir
 
     if ($Configuration -eq 'Debug') {
         Copy-Item $binPath/*.pdb $targetDir
     }
 
-    if (Test-Path $binPath/System.Runtime.InteropServices.RuntimeInformation.dll) {
-        Copy-Item $binPath/System.Runtime.InteropServices.RuntimeInformation.dll $targetDir
-    } else {
-        Write-Warning "Build using $Framework is not sufficient to be downlevel compatible"
-    }
-
     # Copy module manifest, but fix the version to match what we've specified in the binary module.
     $moduleManifestContent = ConvertTo-CRLF (Get-Content -Path 'PSReadLine/PSReadLine.psd1' -Raw)
-    $versionInfo = (Get-ChildItem -Path $targetDir/Microsoft.PowerShell.PSReadLine2.dll).VersionInfo
+    $versionInfo = (Get-ChildItem -Path $targetDir/Microsoft.PowerShell.PSReadLine.dll).VersionInfo
     $version = $versionInfo.FileVersion
     $semVer = $versionInfo.ProductVersion
 

diff --git a/PSReadLine/OnImportAndRemove.cs b/PSReadLine/OnImportAndRemove.cs
@@ -28,7 +28,7 @@ private static Assembly ResolveAssembly(object sender, ResolveEventArgs args)
             }
 
             string root = Path.GetDirectoryName(typeof(OnModuleImportAndRemove).Assembly.Location);
-            string subd = (Environment.Version.Major >= 6) ? "net6plus" : "net462";
+            string subd = (Environment.Version.Major >= 6) ? "net6plus" : "netstd";
             string path = Path.Combine(root, subd, "Microsoft.PowerShell.PSReadLine.Polyfiller.dll");
 
             return Assembly.LoadFrom(path);

diff --git a/PSReadLine/PSReadLine.csproj b/PSReadLine/PSReadLine.csproj
@@ -3,30 +3,23 @@
   <PropertyGroup>
     <OutputType>Library</OutputType>
     <RootNamespace>Microsoft.PowerShell.PSReadLine</RootNamespace>
-    <AssemblyName>Microsoft.PowerShell.PSReadLine2</AssemblyName>
+    <AssemblyName>Microsoft.PowerShell.PSReadLine</AssemblyName>
     <NoWarn>$(NoWarn);CA1416</NoWarn>
     <AssemblyVersion>2.4.0.0</AssemblyVersion>
     <FileVersion>2.4.0</FileVersion>
     <InformationalVersion>2.4.0-beta0</InformationalVersion>
     <CheckForOverflowUnderflow>true</CheckForOverflowUnderflow>
-    <TargetFrameworks>net462;net6.0</TargetFrameworks>
+    <TargetFramework>netstandard2.0</TargetFramework>
     <SuppressNETCoreSdkPreviewMessage>true</SuppressNETCoreSdkPreviewMessage>
+    <IncludeSourceRevisionInInformationalVersion>false</IncludeSourceRevisionInInformationalVersion>
     <LangVersion>9.0</LangVersion>
   </PropertyGroup>
 
-  <ItemGroup Condition="'$(TargetFramework)' == 'net462'">
+  <ItemGroup>
     <PackageReference Include="PowerShellStandard.Library" version="5.1.0" />
     <PackageReference Include="Microsoft.CSharp" version="4.7.0" />
-    <PackageReference Include="System.Runtime.InteropServices.RuntimeInformation" version="4.3.0" />
-    <ProjectReference Include="..\Polyfill\Polyfill.csproj" />
-  </ItemGroup>
-
-  <ItemGroup Condition="'$(TargetFramework)' == 'net6.0'">
-    <PackageReference Include="System.Management.Automation" Version="7.2.23" />
-  </ItemGroup>
-
-  <ItemGroup>
     <PackageReference Include="Microsoft.PowerShell.Pager" version="1.0.0" />
+    <ProjectReference Include="..\Polyfill\Polyfill.csproj" />
   </ItemGroup>
 
   <ItemGroup>

diff --git a/PSReadLine/PSReadLine.psd1 b/PSReadLine/PSReadLine.psd1
@@ -1,6 +1,6 @@
 @{
 RootModule = 'PSReadLine.psm1'
-NestedModules = @("Microsoft.PowerShell.PSReadLine2.dll")
+NestedModules = @("Microsoft.PowerShell.PSReadLine.dll")
 ModuleVersion = '2.4.0'
 GUID = '5714753b-2afd-4492-a5fd-01d9e2cff8b5'
 Author = 'Microsoft Corporation'

diff --git a/Polyfill/Polyfill.csproj b/Polyfill/Polyfill.csproj
@@ -3,19 +3,19 @@
   <PropertyGroup>
     <AssemblyName>Microsoft.PowerShell.PSReadLine.Polyfiller</AssemblyName>
     <AssemblyVersion>1.0.0.0</AssemblyVersion>
-    <TargetFrameworks>net462;net6.0</TargetFrameworks>
+    <TargetFrameworks>netstandard2.0;net6.0</TargetFrameworks>
     <SuppressNETCoreSdkPreviewMessage>true</SuppressNETCoreSdkPreviewMessage>
   </PropertyGroup>
 
-  <ItemGroup Condition="'$(TargetFramework)' == 'net462'">
+  <ItemGroup Condition="'$(TargetFramework)' == 'netstandard2.0'">
     <PackageReference Include="PowerShellStandard.Library" Version="5.1.0" />
   </ItemGroup>
 
   <ItemGroup Condition="'$(TargetFramework)' == 'net6.0'">
-    <PackageReference Include="System.Management.Automation" Version="7.2.23" />
+    <PackageReference Include="System.Management.Automation" Version="7.2.24" />
   </ItemGroup>
 
-  <PropertyGroup Condition="'$(TargetFramework)' == 'net462'">
+  <PropertyGroup Condition="'$(TargetFramework)' == 'netstandard2.0'">
     <DefineConstants>$(DefineConstants);LEGACY</DefineConstants>
   </PropertyGroup>