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Quick Tip No 3 - Nuget Won't Install Lambda Templates

— 3 minute read

You're trying to install the AWS Lambda Templates to use with dotnet, and its not working. Why ?

@David ➜ dev dotnet new -i "Amazon.Lambda.Templates::*"
Determining projects to restore...
C:\Users\David\.templateengine\dotnetcli\v5.0.202\scratch\restore.csproj : error NU1101: Unable to find package Amazon.Lambda.Templates. No packages exist with this id in source(s): Microsoft Visual Studio Offline Packages
Failed to restore C:\Users\David\.templateengine\dotnetcli\v5.0.202\scratch\restore.csproj (in 56 ms).

Looking at the error, we can see that the package we've requested to install doesn't exist. So how do we fix that ?

Chances are that you haven't got a properly configured nuget.config file, so let's create one. To create such a file, execute the following command:

dotnet new nugetconfig

This will create a nuget.config file in your current directory with the following contents:

<?xml version="1.0" encoding="utf-8"?>
<configuration>
<packageSources>
<!--To inherit the global NuGet package sources remove the <clear/> line below -->
<clear />
<add key="nuget" value="https://api.nuget.org/v3/index.json" />
</packageSources>
</configuration>

This creates a local file, so to be able to use it globally, copy it into the c:\Program Files(86)\Nuget\Config folder.

copy .\nuget.config 'C:\Program Files (x86)\NuGet\Config\'

You should now be able to install the Lambda templates:

dotnet new -i "Amazon.Lambda.Templates::*"
Determining projects to restore...
Restored C:\Users\David\.templateengine\dotnetcli\v5.0.202\scratch\restore.csproj (in 944 ms).

Templates Short Name Language Tags
------------------------------------- -------------------------------------------- ---------- ----------------------
Order Flowers Chatbot Tutorial lambda.OrderFlowersChatbot [C#] AWS/Lambda/Function
Lambda Custom Runtime Function (.N... lambda.CustomRuntimeFunction [C#],F# AWS/Lambda/Function
Lambda Detect Image Labels lambda.DetectImageLabels [C#],F# AWS/Lambda/Function
...

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