[wix-users] Custom Bootstrapper - avoiding auto uninstall of installed msi package when running bootstrapper 2nd time

[Sean Hall]

When running the second time, are you calling Plan and Apply with Install
or Modify?  IIRC, Modify would not try to uninstall packages that were
already installed.  Otherwise, you can customize execution per package in
OnPlanPackageBegin.

On Tue, Sep 13, 2016 at 9:48 AM, Baumann Ingo <i.baumann at commend.com> wrote:

> In my custom bootstrapper UI I'm providing checkboxes to select packages
> to install. According to the selected checkboxes, I'm setting string
> variables (A, B, C) to True/False before calling Engine.Plan(LaunchAction.
> Install).
>
> Chain as below
> <chain>
>     <MsiPackage SourceFile="MSI Packages\A.msi" DisplayInternalUI="yes"
> Description="A Setup" DisplayName="A" InstallCondition="A="True""
> Id="A" Permanent="no" Vital="yes" Visible="yes">
>     </MsiPackage>
>     <RollbackBoundary />
>     <MsiPackage SourceFile="MSI Packages\B.msi" DisplayInternalUI="yes"
> Description="B Setup" DisplayName="B" InstallCondition="B="True""
> Id="B" Permanent="no" Vital="yes" Visible="yes">
>     </MsiPackage>
>     <RollbackBoundary />
>     <MsiPackage SourceFile="MSI Packages\C.msi" DisplayInternalUI="yes"
> Description="C Setup" DisplayName="C" InstallCondition="C="True""
> Id="C" Permanent="no" Vital="yes" Visible="yes">
>     </MsiPackage>
> </chain>
>
> I've checked the log for evaluation condition and looks fine. E.g.:
> Condition 'A="True"' evaluates to false.
>
> Installing an MSI with above explained conditioning works fine. But when I
> run the bootstrapper again and install another package, a previous package
> is getting uninstalled.
>
>
> 1.       Run bootstrapper and install A and C (see execute: Install in log
> below)
>
> Planned package: A, state: Absent, default requested: Present, ba
> requested: Present, execute: Install, rollback: Uninstall, cache: Yes,
> uncache: No, dependency: Register
>
> Planned package: B, state: Absent, default requested: Absent, ba
> requested: Absent, execute: None, rollback: None, cache: No, uncache: No,
> dependency: None
>
> Planned package: C, state: Absent, default requested: Present, ba
> requested: Present, execute: Install, rollback: Uninstall, cache: No,
> uncache: No, dependency: Register
>
> 2.       Run bootstrapper again and install B will uninstall C (see
> execute: Uninstall in log below)
> Planned package: A, state: Present, default requested: Absent, ba
> requested: Absent, execute: None, rollback: None, cache: No, uncache: No,
> dependency: Unregister
> Planned package: B, state: Absent, default requested: Present, ba
> requested: Present, execute: Install, rollback: Uninstall, cache: Yes,
> uncache: No, dependency: Register
> Planned package: C, state: Present, default requested: Absent, ba
> requested: Absent, execute: Uninstall, rollback: Install, cache: No,
> uncache: Yes, dependency: Unregister
>
> How can I avoid removal of a packages at all?
> Is there a way to customize execution per package?
>
> Many thanks,
> Ingo
>
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