From c560e321dec10522e2adb81c7f583e03febdcca3 Mon Sep 17 00:00:00 2001
From: Stefan Nikolei <stefan@nikolei.eu>
Date: Sat, 15 Nov 2025 10:08:16 +0100
Subject: [PATCH] Drop .NET9

---
 .github/workflows/build-and-test.yml          | 28 +------------------
 src/ImageSharp/ImageSharp.csproj              |  2 +-
 .../ImageSharp.Benchmarks.csproj              |  2 +-
 .../ImageSharp.Tests.ProfilingSandbox.csproj  |  2 +-
 .../ImageSharp.Tests/ImageSharp.Tests.csproj  |  2 +-
 5 files changed, 5 insertions(+), 31 deletions(-)

diff --git a/.github/workflows/build-and-test.yml b/.github/workflows/build-and-test.yml
index e5522ee1d..818c4566c 100644
--- a/.github/workflows/build-and-test.yml
+++ b/.github/workflows/build-and-test.yml
@@ -90,31 +90,6 @@ jobs:
             runtime: -x64
             codecov: false
 
-          - os: ubuntu-latest
-            framework: net9.0
-            sdk: 9.0.x
-            sdk-preview: true
-            runtime: -x64
-            codecov: false
-          - os: macos-13 # macos-latest runs on arm64 runners where libgdiplus is unavailable
-            framework: net9.0
-            sdk: 9.0.x
-            sdk-preview: true
-            runtime: -x64
-            codecov: false
-          - os: windows-latest
-            framework: net9.0
-            sdk: 9.0.x
-            sdk-preview: true
-            runtime: -x64
-            codecov: false
-          - os: buildjet-4vcpu-ubuntu-2204-arm
-            framework: net9.0
-            sdk: 9.0.x
-            sdk-preview: true
-            runtime: -x64
-            codecov: false
-
           - os: ubuntu-latest
             framework: net8.0
             sdk: 8.0.x
@@ -195,9 +170,8 @@ jobs:
         uses: actions/setup-dotnet@v4
         with:
           dotnet-version: |
-            9.0.x
             10.0.x
-            
+
       - name: DotNet Build
         if: ${{ matrix.options.sdk-preview != true }}
         shell: pwsh
diff --git a/src/ImageSharp/ImageSharp.csproj b/src/ImageSharp/ImageSharp.csproj
index a9a7df50d..2c7172387 100644
--- a/src/ImageSharp/ImageSharp.csproj
+++ b/src/ImageSharp/ImageSharp.csproj
@@ -30,7 +30,7 @@
   <Choose>
     <When Condition="$(SIXLABORS_TESTING_PREVIEW) == true">
       <PropertyGroup>
-        <TargetFrameworks>net8.0;net9.0;net10.0</TargetFrameworks>
+        <TargetFrameworks>net8.0;net10.0</TargetFrameworks>
       </PropertyGroup>
     </When>
     <Otherwise>
diff --git a/tests/ImageSharp.Benchmarks/ImageSharp.Benchmarks.csproj b/tests/ImageSharp.Benchmarks/ImageSharp.Benchmarks.csproj
index 004065ee2..2628623b4 100644
--- a/tests/ImageSharp.Benchmarks/ImageSharp.Benchmarks.csproj
+++ b/tests/ImageSharp.Benchmarks/ImageSharp.Benchmarks.csproj
@@ -39,7 +39,7 @@
   <Choose>
     <When Condition="$(SIXLABORS_TESTING_PREVIEW) == true">
       <PropertyGroup>
-        <TargetFrameworks>net8.0;net9.0;net10.0</TargetFrameworks>
+        <TargetFrameworks>net8.0;net10.0</TargetFrameworks>
       </PropertyGroup>
     </When>
     <Otherwise>
diff --git a/tests/ImageSharp.Tests.ProfilingSandbox/ImageSharp.Tests.ProfilingSandbox.csproj b/tests/ImageSharp.Tests.ProfilingSandbox/ImageSharp.Tests.ProfilingSandbox.csproj
index d3187694d..bc52610d2 100644
--- a/tests/ImageSharp.Tests.ProfilingSandbox/ImageSharp.Tests.ProfilingSandbox.csproj
+++ b/tests/ImageSharp.Tests.ProfilingSandbox/ImageSharp.Tests.ProfilingSandbox.csproj
@@ -19,7 +19,7 @@
   <Choose>
     <When Condition="$(SIXLABORS_TESTING_PREVIEW) == true">
       <PropertyGroup>
-        <TargetFrameworks>net8.0;net9.0;net10.0</TargetFrameworks>
+        <TargetFrameworks>net8.0;net10.0</TargetFrameworks>
       </PropertyGroup>
     </When>
     <Otherwise>
diff --git a/tests/ImageSharp.Tests/ImageSharp.Tests.csproj b/tests/ImageSharp.Tests/ImageSharp.Tests.csproj
index 627ebea0f..a1d5b0ee2 100644
--- a/tests/ImageSharp.Tests/ImageSharp.Tests.csproj
+++ b/tests/ImageSharp.Tests/ImageSharp.Tests.csproj
@@ -12,7 +12,7 @@
   <Choose>
     <When Condition="$(SIXLABORS_TESTING_PREVIEW) == true">
       <PropertyGroup>
-        <TargetFrameworks>net8.0;net9.0;net10.0</TargetFrameworks>
+        <TargetFrameworks>net8.0;net10.0</TargetFrameworks>
       </PropertyGroup>
     </When>
     <Otherwise>