[wix-users] Overwrite file only if modified

[Alexis C?t?]

Hi everyone!

I'm trying to change the CouchDB windows installer to ensure that local configuration files remains on uninstallation.

At the moment, a premade file called (local.ini) is shipped with the application. CouchDB's team what to:

1. On uninstall, keep the local.ini file if it was changed

or

2. Let's assume  we make this file permanent. On install, it should only overwrite the local.ini file if it was changed.


>From my research, there doesn't seem to be any support from WiX out of the box.

My first untested  solution was to use custom actions to:

1. Make the local.ini file permanent
2. Make the local.ini file NewOverwrite="yes"
3. On uninstall, check if the file was modified. If  yes, we delete it using a custom action script.

Do you have any ideas on how I could do that?

Regards,
Alexis