What do the $package and $project params contain in a NuGet install.ps1 script?

Question

I'm writing my first install PowerShell script for a NuGet package. I'm trying to copy a file from the lib folder into the tools folder of another NuGet package. The default install.ps1 script has four parameters, two of which are:

$package
$project

They appear to be "objects" of some sort, but I'm not sure what properties and methods they contain. I've done some searching online, but have yet to find a reference or any documentation for these arguments.

Looking at this StackOverflow post, the question contains a link to Project Interface. Is that what $project is in the NuGet install.ps1 file?

Greg Burghardt · Accepted Answer · 2021-04-14 11:49:36Z

13

In NuGet 2:

$project => EnvDTE.Project - which is the Visual Studio object model for a project.
$package => NuGet.IPackage - the NuGet package.

In NuGet 3:

$project => EnvDTE.Project
$package => ScriptPackage

Note that the $package in NuGet 3 has a fewer properties available so some PowerShell scripts included with existing NuGet packages will not work.

You can always see which .NET Type a PowerShell variable is by using GetType().FullName, e.g.:

Write-Output $project.GetType().FullName
Write-Output $package.GetType().FullName

edited Apr 14, 2021 at 11:49

Greg Burghardt

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answered Nov 19, 2015 at 18:37

Matt Ward

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