Bug: installer requires elevation when installing in per-user mode

[soredake]

Steps to reproduce the problem

1. Download latest installer, choose per-user install mode, try to install it.
2. Errors.

What's going on? Describe the problem in as much detail as possible.

Same problem I reported for wingetui software: marticliment/UniGetUI#1623

Information about the software:

Deadbeef version: 1.9.6
OS: Windows 11 Pro

[Oleksiy-Yakovenko]

@kuba160 FYI:

potentially need to add this to ISCC config:

[Setup]
...
PrivilegesRequired=lowest

[kuba160]

potentially need to add this to ISCC config:

[Setup]
...
PrivilegesRequired=lowest

This just changes the default behavior of the installer. Commit 74dd665 did enable user-mode installation through override (dialog will be shown on launch where user can choose the install mode and will request privileges when necessary).

The issue here is:

1. Creating desktop icon fails. If I read winget .iss file correctly, they only do it on regular install, not 100% why it can't be done on non-privileged install.
2. File association can only be done through privileged install, which means that it has to be marked as disabled/unavailable in user install.

[soredake]

Creating desktop icon fails. If I read winget .iss file correctly, they only do it on regular install, not 100% why it can't be done on non-privileged install.

Because installer creating them in privileged location even when installing per-user.

When installing only for current user, start menu shortcut should be created in $env:APPDATA\Microsoft\Windows\Start Menu\Programs, not in C: \ProgramData\Microsoft\Windows\Start Menu\WingetUI .Ink which requires UAC prompt.

Similar for desktop shortcut, start menu shortcut should be created in $env:HOME\Desktop, not in C:\Users\Public\Desktop\WingetUI .Ink which requires UAC prompt.

Quoting myself from wingetui issue.

How it's been fixed for wingetui installer:
marticliment/UniGetUI@c5f6331

File association can only be done through privileged install, which means that it has to be marked as disabled/unavailable in user install.

It can be done without priviledges, see https://stackoverflow.com/a/27091968/4207635