Missing ICSharpCode.SharpZipLib dependency?

[dennisroche]

Hi,

I'm having difficulty using Cake.Compression in our build.

The .cake file.

// Using Cake (C# Make) http://cakebuild.net

#addin "Cake.Compression"
#tool "nuget:?package=SharpZipLib"

Gives the error message,

Error: Could not load file or assembly 'ICSharpCode.SharpZipLib, Version=0.86.0.518, Culture=neutral, PublicKeyToken=1b03e6acf1164f73' or one of its dependencies. The system cannot find the file specified.

I tried to resolve it by adding the #tool "nuget:?package=SharpZipLib" reference to no avail.

[akordowski]

Thanks for your message. This sounds like the build server cannot download the SharpZipLib package properly from NuGet. Please verify that the build server can download packages from NuGet or/and the Cake.Compression AddIn isn't downloaded manually from NuGet. Besides I will take a look at this issue.

[dennisroche]

Thanks for getting back to me.

The SharpZipLib package is downloaded by nuget correctly, under the tools\Addins directory.

+---Addins
|   +---Cake.Compression
|   |   \---lib
|   |       \---net45
|   \---SharpZipLib
|       \---lib
|           +---11
|           +---20
|           +---SL3
|           \---SL4
+---Cake

Extracting the Cake.Compression.nupkg, I can verify that the dependency is specified correctly in the .nuspec.

I'm have been able to workaround the issue by copying the ICSharpCode.SharpZipLib.dll to the Addins\Cake.Compression\lib\net45

// Hack: Cake.Compression is missing local copy of SharpZipLib dependencies
if (!FileExists("./tools/Addins/Cake.Compression/lib/net45/ICSharpCode.SharpZipLib.dll")) {
    CopyFile("./tools/Addins/SharpZipLib/lib/20/ICSharpCode.SharpZipLib.dll",
        "./tools/Addins/Cake.Compression/lib/net45/ICSharpCode.SharpZipLib.dll");
}

[akordowski]

Thanks for your feedback and the detailed informations. I will took a look into it later this week and then get back to you.

[Sam13]

I think this is not a bug of Cake.Compression.
In my Cake script I have to do the following to get it working:

#addin nuget:?package=SharpZipLib&version=0.86.0
#addin nuget:?package=Cake.Compression&version=0.1.0

This is because Cake does not resolve NuGet dependencies when downloading an addin.
See cake-build/cake#787

[akordowski]

@Sam13 Thank you for the hint. I wasn't aware of that.