Offer to remove actual package (*.install/*.portable) when removing meta/virtual package

[ferventcoder]

This is nearly the same as @dtgm does in his packages:

# powershell v2 compatibility
$psVer = $PSVersionTable.PSVersion.Major
if ($psver -ge 3) {
  function Get-ChildItemDir {Get-ChildItem -Directory $args}
} else {
  function Get-ChildItemDir {Get-ChildItem $args}
}
# MetaPackage
$warningPreference = "Continue"
$chocoLib = Join-Path $env:ChocolateyInstall "lib"
if (Test-Path -PathType Container (Join-Path $chocoLib 'systemninja.*')) {
  Write-Warning "Uninstall NOT complete."
  Write-Host
@"
  This package is a metapackage; a chocolatey feature not yet fully implemented.
  To retain future compatibility this package does not uninstall the dependent
  package it points to as designated with *.install or *.portable.`n
"@
  Write-Warning "To finish removing the program installed by package systemninja, please also run the command:"
  $text += " `n`tchoco uninstall "
  $list = (Get-ChildItemDir $chocoLib\systemninja.*).Name
  foreach ($i in $list) {
    $text += "$i "
  }
  $text += "-y`n"
  Write-Host $text
}

The message we would add is the following:

WARNING: Uninstall NOT complete. You have removed a metapackage that 
 has a *.install/*.portable that it installed (this package represents 
 discoverability).

Would you like to uninstall ____ package as well? ([Y]es/[N]o) 

The prompt would timeout after 30 seconds with a default value of no. If no, provide the following text:

WARNING: To finish removing ___, please also run the command: `choco uninstall _____`

[ferventcoder]

@dtgm - by the way, meta packages are fully implemented and have been since day 1 of NuGet. It's virtual packages that are not fully implemented.

[dtgm]

You're right, when I stated This package is a metapackage; a chocolatey feature not yet fully implemented. I was thinking in my head the unique use case of metapackages that are to designate install type by install/portable which is why I like your message better because it highlights that differentiation, You have removed a metapackage that has a *.install/*.portable that it installed

It is also important to have this message since trying to uninstall the foo.install first says you actually, you have to uninstall foo and I don't think it is clear to the user they have to uninstall both packages separately, and in the correct order.

cinst rufus -y
which installs rufus.install as a dependency

cuninst rufus.install -y
Uninstalling the following packages:
rufus.install
rufus.install not uninstalled. An error occurred during uninstall:
 Unable to uninstall 'rufus.install 2.8' because 'rufus 2.8' depends on it.

Chocolatey uninstalled 0/1 packages. 1 packages failed.
 See the log for details (C:\ProgramData\chocolatey\logs\chocolatey.log).
Failures
 - rufus.install

and then cuninst rufus -y is silent about the status of the actual package that uninstalls the program which brings us to the problem being addressed in this issue.

[ferventcoder]

Looks pretty good. Also puts out the first warning message with ANY install, upgrade or uninstall for packages that are in warning.

[ferventcoder]

This is related to #455.