Changes

== MSI installer package.xml ==

<package id="7zip"

name="7-zip 4.57"

<remove cmd='msiexec /qn /x{23170F69-40C1-2701-0457-000002000000}' />

</package>

Alternatively to the use of the GUID you might use the MSI file for uninstall as well. I prefer this method since some packagers tend to create new GUID strings on each release - so you need to search for the right ID at each release. Using the MSI file obsoletes this step:

<?xml version="1.0" encoding="utf-8" ?>

<packages>

</packages>

== MSI installer package.xml for use with existing older exe based installs==

Use this if you have existing .exe based installs of 7-Zip (such as 4.20) and you would like to uninstall them before switching to an .msi based install.

<package id="7-zip" name="7-zip 4.42" revision="1" reboot="false" priority="0">

<check type="uninstall" condition="exists" path="7-Zip 4.42" />

<remove cmd='msiexec /qn /norestart /x %SOFTWARE%\7-Zip\7z442.msi' />

</package>

== EXE installer package.xml ==

<package

id="7zip"

</remove>

</package>

== 7-Zip EXE installer options ==