MR_Cake.xml

<?xml version="1.0" encoding="UTF-8"?>
<meta-runner name="Cake">
  <description>Execute Cake</description>
  <settings>
    <parameters>
      <param name="mr.Cake.script" value="" spec="text description='The location of the Cake Script, relative to the root folder' display='normal' label='Cake Script:'" />
      <param name="mr.Cake.target" value="" spec="text description='The name of the Target within the Cake Script to execute' display='normal' label='Target:'" />
      <param name="mr.Cake.verbosity" value="" spec="select data_1='Quiet' data_3='Minimal' data_5='Normal' data_7='Verbose' data_9='Diagnostic' description='The logging level for the Cake Script' display='normal' label='Verbosity:'" />
      <param name="mr.Cake.arguments" value="" spec="text description='Additional arguments to pass to Cake Script' display='normal' label='Cake Arguments:'" />
    </parameters>
    <build-runners>
      <runner name="Cake" type="jetbrains_powershell">
        <parameters>
          <param name="jetbrains_powershell_execution" value="PS1" />
          <param name="jetbrains_powershell_noprofile" value="true" />
          <param name="jetbrains_powershell_errorToError" value="error" />
          <param name="jetbrains_powershell_script_mode" value="CODE" />
          <param name="jetbrains_powershell_bitness" value="x86" />
          <param name="teamcity.step.mode" value="default" />
          <param name="jetbrains_powershell_script_code"><![CDATA[[CmdletBinding()]
Param(
    [string]$script,
    [string]$target,
    [string]$verbosity,
    [string]$arguments
)

Write-Verbose "Entering script $MyInvocation.MyCommand.Name";
Write-Verbose "Parameter Values";
foreach($key in $PSBoundParameters.Keys)
{
    Write-Verbose ($key + ' = ' + $PSBoundParameters[$key]);
}

$repositoryPath = "%teamcity.build.workingDir%";
$toolsPath = Join-Path $repositoryPath "tools";
$packagePath = Join-Path $toolsPath "packages.config";
$cakePath = Join-Path $toolsPath "Cake/Cake.exe";
$nuGetPath = Join-Path $toolsPath "nuget.exe";

# Check if there's a tools directory.
if (!(Test-Path $toolsPath)) {
    Write-Host "Creating tools directory...";
    New-Item -Path $toolsPath -Type directory | out-null;
    if (!(Test-Path $toolsPath)) {
        Throw "Could not create tools directory.";
    }
}

# Make sure NuGet exist.
if (!(Test-Path $nuGetPath)) {
  # Download NuGet.exe.
  Write-Verbose "Downloading nuget.exe...";
  (New-Object System.Net.WebClient).DownloadFile("http://dist.nuget.org/win-x86-commandline/latest/nuget.exe", $nuGetPath);
  # Make sure it was properly downloaded.
  if (!(Test-Path $nuGetPath)) {
      Throw "Could not find nuget.exe";
  }
}

# Install prereqs from NuGet.
Push-Location;
Set-Location $toolsPath;
if ((Test-Path $packagePath)) {
  # Install tools in packages.config.
  Write-Host "Restoring packages...";
  Invoke-Expression "$nuGetPath install `"$packagePath`" -ExcludeVersion -OutputDirectory `"$toolsPath`"";
}
if (!(Test-Path $cakePath)) {
  # Install Cake if not part of packages.config.
  Write-Host "Installing Cake...";
  Invoke-Expression "$nuGetPath install Cake -ExcludeVersion -OutputDirectory `"$toolsPath`"";
}
Pop-Location;

# Make sure that Cake has been installed.
if (!(Test-Path $cakePath)) {
    Throw "Could not find Cake.exe at $cakePath";
}

# Start Cake
Invoke-Expression "& `"$cakePath`" `"%mr.Cake.script%`" -target=`"%mr.Cake.target%`" -verbosity=`"%mr.Cake.verbosity%`" %mr.Cake.arguments%";]]></param>
        </parameters>
      </runner>
    </build-runners>
    <requirements />
  </settings>
</meta-runner>