How should I create or upload a 32-bit and 64-bit NuGet package?

We've been discussing a similar issue on the Chocolatey Google Group. There aren't any semantics built into NuGet. The requirement wouldn't be, what processor architecture are you running on. It would have to be what processor architecture is your project targeting. And then that complicates things... you'd have to understand AnyCPU as well.

I think for now, I'm going to upload two packages. I can always published a combined one when I fix up an install.ps1 that can handle querying the project target.

mypackage.x86mypackage.x64

You can add x64 and x86 support to a project by using conditional references. It would appear that for now Nuget does not like having two references with the same name. So we need to add in the second reference manually and then make the references conditional.

Save x64 assemblies in a folder called x64 & x86 assemblies in a folder called x86 They must both have the same assembly name. Then update the allowedReferences array with the names of all assemblies to add.

Use the following scripts.

Install.ps1

$allowedReferences = @("Noesis.Javascript")# Full assembly name is requiredAdd-Type -AssemblyName 'Microsoft.Build, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'$projectCollection = [Microsoft.Build.Evaluation.ProjectCollection]::GlobalProjectCollection$allProjects = $projectCollection.GetLoadedProjects($project.Object.Project.FullName).GetEnumerator();if($allProjects.MoveNext()){    $currentProject = $allProjects.Current    foreach($Reference in $currentProject.GetItems('Reference') | ? {$allowedReferences -contains $_.Xml.Include })    {        $hintPath = $Reference.GetMetadataValue("HintPath")        write-host "Matched againt $hintPath"        #If it is x64 specific add condition (Include 'Any Cpu' as x64)        if ($hintPath -match '.*\\(amd64|x64)\\.*\.dll$')        {            $Reference.Xml.Condition = "'TargetPlatform' != 'x86'"            $condition = $Reference.Xml.Condition            write-host "hintPath = $hintPath"            write-host "condition = $condition"            #Visual Studio doesnt allow the same reference twice (so try add friends)            $matchingReferences = $currentProject.GetItems('Reference') | ? {($_.Xml.Include -eq $Reference.Xml.Include) -and ($_.GetMetadataValue("HintPath") -match ".*\\(x86)\\.*\.dll$")}            if (($matchingReferences | Measure-Object).Count -eq 0)            {                $x86 = $hintPath -replace '(.*\\)(amd64|x64)(\\.*\.dll)$', '$1x86$3'                $x86Path = Join-Path $installPath $x86                if (Test-Path $x86Path) {                    #Add                     write-host "Adding reference to $x86"                    $metaData = new-object "System.Collections.Generic.Dictionary``2[[System.String, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.String, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]]"                    $metaData.Add("HintPath", $x86)                    $currentProject.AddItem('Reference', $Reference.Xml.Include, $metaData)                    $newReference = $currentProject.GetItems('Reference') | ? {($_.Xml.Include -eq $Reference.Xml.Include) -and ($_.GetMetadataValue("HintPath") -eq $x86)} | Select-Object -First 1                    $newReference.Xml.Condition = "'TargetPlatform' == 'x86'"                           }            }        }        #If it is x86 specific add condition         if ($hintPath -match '.*\\x86\\.*\.dll$')        {            $Reference.Xml.Condition = "'TargetPlatform' == 'x86'"            $condition = $Reference.Xml.Condition            write-host "hintPath = $hintPath"            write-host "condition = $condition"            #Visual Studio doesnt allow the same reference twice (so try add friends)            $matchingReferences = $currentProject.GetItems('Reference') | ? {($_.Xml.Include -eq $Reference.Xml.Include) -and ($_.GetMetadataValue("HintPath") -match ".*\\(amd64|x64)\\.*\.dll$")}            if (($matchingReferences | Measure-Object).Count -eq 0)            {                $x64 = $hintPath -replace '(.*\\)(x86)(\\.*\.dll)$', '$1x64$3'                $x64Path = Join-Path $installPath $x64                if (Test-Path $x64Path) {                    #Add                     write-host "Adding reference to $x64"                    $metaData = new-object "System.Collections.Generic.Dictionary``2[[System.String, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.String, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]]"                    $metaData.Add("HintPath", $x64)                    $currentProject.AddItem('Reference', $Reference.Xml.Include, $metaData)                    $newReference = $currentProject.GetItems('Reference') | ? {($_.Xml.Include -eq $Reference.Xml.Include) -and ($_.GetMetadataValue("HintPath") -eq $x64)} | Select-Object -First 1                    $newReference.Xml.Condition = "'TargetPlatform' != 'x86'"                           } else {                    $amd64 = $hintPath -replace '(.*\\)(x86)(\\.*\.dll)$', '$1amd64$3'                    $amd64Path = Join-Path $installPath $amd64                    if (Test-Path $amd64Path) {                        #Add                         write-host "Adding reference to $amd64"                        $metaData = new-object "System.Collections.Generic.Dictionary``2[[System.String, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.String, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]]"                        $metaData.Add("HintPath", $amd64)                        $currentProject.AddItem('Reference', $Reference.Xml.Include, $metaData)                        $newReference = $currentProject.GetItems('Reference') | ? {($_.Xml.Include -eq $Reference.Xml.Include) -and ($_.GetMetadataValue("HintPath") -eq $amd64)} | Select-Object -First 1                        $newReference.Xml.Condition = "'TargetPlatform' != 'x86'"                               }                               }                           }                   }    }}

Uninstall.ps1

$allowedReferences = @("Noesis.Javascript")# Full assembly name is requiredAdd-Type -AssemblyName 'Microsoft.Build, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'$projectCollection = [Microsoft.Build.Evaluation.ProjectCollection]::GlobalProjectCollection$allProjects = $projectCollection.GetLoadedProjects($project.Object.Project.FullName).GetEnumerator();if($allProjects.MoveNext()){    foreach($Reference in $allProjects.Current.GetItems('Reference') | ? {$allowedReferences -contains $_.UnevaluatedInclude })    {        $allProjects.Current.RemoveItem($Reference)    }}

There doesn't seem to be a specific target for 32 or 64 bit architectures. Bit of a pain, but can you do something with the powershell scripts (install.ps1) to detect the architecture and install accordingly?

See Automatically Running PowerShell Scripts During Package Installation and Removal - http://docs.nuget.org/docs/creating-packages/creating-and-publishing-a-package