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In the <os name> form, the os name is has been one of:

• System.getProperty("os.name").replace(' ', '_')
• "windows"
• "mac"
• "unix"

For 4.3.6, IZPACK-798 changed the above to use variables instead of text files, following the same naming convention.
For 5.0 a better approach would be to use Platform to determine the appropriate variable (see IZPACK-829).
The variable could be derived from:

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If no variable is specified for the current platform, it would use TargetPanel.dir.

For example, change the resources to variables:

<res id="TargetPanel.dir.windows" src="@{izpack.dir.app}/installpath.windows.txt"/>
<res id="TargetPanel.dir.unix" src="@{izpack.dir.app}/installpath.unix.txt"/>

to

<variable name="TargetPanel.dir.windows" value="C:/MyApp"/>
<variable name="TargetPanel.dir.unix" value="/usr/local/myapp"/> 

This uses the following variable search order to determine the default directory to display:

1. TargetPanel.dir.<platform symbolic name> e.g. TargetPanel.dir.windows_7
2. TargetPanel.dir.<platform name> e.g. TargetPanel.dir.windows
3. TargetPanel.dir.<parent platform> e.g. given platform "FEDORA_LINUX" looks for TargetPanel.dir.linux, followed by TargetPanel.dir.unix
4. TargetPanel.dir
5. DEFAULT_INSTALL_PATH
6. SYSTEM_user_dir corresponds to the system property "user.dir"

Available platforms can be found in the class Platforms. The names are the lowercase versions of those defined.
Allowed names include:

• aix
• debian_linux
• fedora_linux
• freebsd
• hp_ux
• linux
• mac
• mac_osx
• mandrake_linux
• mandriva_linux
• os_2
• red_hat_linux
• sunos
• sunos_x86
• sunos_sparc
• suse_linux
• unix
• ubuntu_linux
• windows
• windows_7
• windows_xp
• windows_2003
• windows_vista

Differences from 4.3.5

In 4.3.5, resources were used rather than variables. Resources were searched for with the following names

• "TargetPanel.dir." + lower case version of System.getProperty("os.name"), with any spaces replace with underscores
• "TargetPanel.dir." + <platform> where platform is one of ("windows", "macosx", "unix")
• "TargetPanel.dir"

Upgrading customizations

Prepare to detect some internal refactorings when providing customizations: e.g. the class com.izforge.izpack.util.AbstractUIProcessHandler can now be found under com.izforge.izpack.api.handler.AbstractUIProcessHandler

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For a more details, see Setting Default Installation Directories.

Using the IzPack Maven Plugin

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