diff --git a/.gitignore b/.gitignore
index 70f8ac5..2cdc5e6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -475,4 +475,7 @@ $RECYCLE.BIN/
 
 # Windows shortcuts
 *.lnk
-result
\ No newline at end of file
+
+# project specific
+result
+MyTestConsoleApp
\ No newline at end of file
diff --git a/alias.sh b/alias.sh
index 569598c..6e0ec1a 100644
--- a/alias.sh
+++ b/alias.sh
@@ -4,4 +4,5 @@ alias nixe='nix --experimental-features "nix-command flakes"'
 alias nulock='nixe run .#devTasks.updateNugetLock'
 alias fllock='nixe run .#devTasks.updateFlakeLock'
 alias ulock='nulock && fllock'
-alias restore-on-current-source='nixe build && dotnet nuget locals all -c && dotnet restore -s result/share -s https://api.nuget.org/v3/index.json $1'
\ No newline at end of file
+alias .net='nixe run .#devTasks.runDotNet -- $@'
+alias rat='nixe run .#devTasks.runAllTests'
\ No newline at end of file
diff --git a/flake.nix b/flake.nix
index a1508ff..8f9cea5 100644
--- a/flake.nix
+++ b/flake.nix
@@ -29,10 +29,7 @@
         updateLogicResourceFile = nixpkgsFor.${system}.writeScript "update_logic_resource_file.sh" ''
           dotnet run --project ResourceString.Net.App.Console ResourceString.Net.Logic/Properties/Resources.resx  ResourceString.Net.Logic.Properties > ResourceString.Net.Logic/Properties/Resources.cs.tmp
           mv ResourceString.Net.Logic/Properties/Resources.cs.tmp ResourceString.Net.Logic/Properties/Resources.cs
-        '';
-        runAllTests = nixpkgsFor.${system}.writeScript "run_all_tests.sh" ''
-          dotnet test *.Tests
-        '';
+        '';        
         buildAllAssemblies = nixpkgsFor.${system}.writeScript "build_all_assemblies.sh" ''
           # Find all .csproj files below the current folder
           csproj_files=$(find . -name '*.csproj')
@@ -76,8 +73,124 @@
         runDefaultApp = nixpkgsFor.${system}.writeScript "run_default_app.sh" ''
           dotnet run --project ResourceString.Net.App.Console $@
         '';
-        createNugetPackage = nixpkgsFor.${system}.writeScript "run_default_app.sh" ''
-          dotnet run --project ResourceString.Net.App.Console $@
+        runDotNet = nixpkgsFor.${system}.writeScript "dotnet.sh" ''
+          if [ ! -d "result/share" ]; then
+            nix --experimental-features 'nix-command flakes' build 
+          fi
+
+          injectable_commands="restore$2 addpackage"          
+
+          for value in $injectable_commands; do
+              if [ "$value" = "$1$2" ] || [ "$value" = "$1$3" ]; then
+                  dotnet nuget locals all -c                   
+                  dotnet $@ -s "result/share;https://api.nuget.org/v3/index.json"
+                  exit $?
+              fi             
+          done
+
+          dotnet $@ 
+        '';
+
+        runAllTests = nixpkgsFor.${system}.writeScript "run_all_tests.sh" ''
+          dotnet test *.Tests
+
+          echo "# test package intregation"
+
+          echo "## test example app"
+          
+          ${scripts.${system}.runDotNet} restore example/Example.App/
+          ${scripts.${system}.runDotNet} build example/Example.App/
+          output=$(${scripts.${system}.runDotNet} run --project example/Example.App/ --no-build | tr '\n' ' ')
+
+          expected_output="Hello Value1 2Value21{2} "
+          if [ "$output" = "$expected_output" ]; then
+              echo "Output matches the expected value."
+          else
+              echo "expected output is:"
+              echo $expected_output
+
+              echo "but was:"
+              echo $output
+
+              exit 1
+          fi
+
+          echo "## test MyTestConsoleApp"
+
+          rm -rf MyTestConsoleApp
+          dotnet new console --name MyTestConsoleApp
+
+          echo "<Project Sdk=\"Microsoft.NET.Sdk\">
+            <PropertyGroup>
+              <OutputType>Exe</OutputType>
+              <TargetFramework>net6.0</TargetFramework>
+              <ImplicitUsings>enable</ImplicitUsings>
+              <Nullable>enable</Nullable>
+            </PropertyGroup>
+
+            <PropertyGroup>
+              <AdditionalFileItemNames>$(AdditionalFileItemNames);EmbeddedResource</AdditionalFileItemNames>
+            </PropertyGroup>
+
+          </Project>
+          " > MyTestConsoleApp/MyTestConsoleApp.csproj
+
+          ${scripts.${system}.runDotNet} add MyTestConsoleApp package "System.Resources.Extensions"
+          ${scripts.${system}.runDotNet} add MyTestConsoleApp package "ResourceString.Net"
+
+          echo "<?xml version='1.0' encoding='utf-8'?>
+          <root>
+            <data name='Greetings'>
+              <value>Hello {0}</value>
+              <comment>0 = name</comment>
+            </data>
+            <data name='World'>
+              <value>World</value>
+            </data>
+          </root>
+          " > MyTestConsoleApp/Resources.resx
+
+          echo "var message = MyTestConsoleApp.Resources.Greetings.From(
+              MyTestConsoleApp.Resources.World
+          );
+
+          Console.WriteLine(message.Value);
+          " > MyTestConsoleApp/Program.cs
+
+          echo "<?xml version='1.0' encoding='utf-8'?>
+          <root>
+            <data name='Greetings'>
+              <value>Hallo {0}</value>
+              <comment>0 = name</comment>
+            </data>
+            <data name='World'>
+              <value>Welt</value>
+            </data>
+          </root>
+          " > MyTestConsoleApp/Resources.de.resx
+
+          echo "
+          Thread.CurrentThread.CurrentCulture = System.Globalization.CultureInfo.GetCultureInfo(\"de-DE\");
+
+          Console.WriteLine(message.Value);
+          " >> MyTestConsoleApp/Program.cs
+
+          ${scripts.${system}.runDotNet} restore MyTestConsoleApp
+          ${scripts.${system}.runDotNet} build MyTestConsoleApp
+          output=$(${scripts.${system}.runDotNet} run --project MyTestConsoleApp --no-build | tr '\n' ' ')
+
+          expected_output="Hello World Hallo Welt "
+          if [ "$output" = "$expected_output" ]; then
+              echo "Output matches the expected value."
+          else
+              echo "expected output is:"
+              echo $expected_output
+
+              echo "but was:"
+              echo $output
+
+              exit 1
+          fi
         '';
       });
 
@@ -140,6 +253,10 @@
             type = "app";
             program = "${scripts.${system}.cleanAllAssemblies}";
           };
+          runDotNet = {
+            type = "app";
+            program = "${scripts.${system}.runDotNet}";
+          };
         };
       });
 
@@ -149,7 +266,7 @@
           packages =
             [ nixpkgsFor.${system}.dotnet-sdk nixpkgsFor.${system}.nixfmt ];
           shellHook = ''
-            alias nixe="nix --experimental-features 'nix-command flakes'"
+            . ./alias.sh
           '';
         };
       });