[gobolinux-users] About Recipe "unmanaged_files" option (Hplip recipe in detail)

[Cavva]

Hi, i'm trying to make a "NewVersion" for the Recipe Hplip,
here the steps i've done:

1) created the new Recipe with "NewVersion Hplip 2.7.12"

2) removed the "01-sysconfdir.patch" because i think i don't need it,
if i've understood correctly it only replace "legacy" unix path with
the gobo path, but since the legacy path in gobo exists, i choose to
not "replace" them

3) run "Compile Hplip"

now, compile ends with this message:

make[2]: Leaving directory `/Files/Compile/Sources/hplip-2.7.12'
make[1]: Leaving directory `/Files/Compile/Sources/hplip-2.7.12'
UnionSandbox: Cleaning up.
UnionSandbox: Moving entries to: /Programs/Hplip/2.7.12/.SandboxInstall_Root
SandboxInstall: Postprocessing Sandbox
SandboxInstall: Left over files:
System
System/Links
System/Links/Shared
System/Links/Shared/cups
System/Links/Shared/cups/backend
System/Links/Shared/cups/backend/hp
System/Links/Shared/cups/backend/hpfax
System/Links/Shared/applications
System/Links/Shared/applications/hplip.desktop
System/Settings
System/Settings/hp
System/Settings/hp/hplip.conf
System/Settings/udev
System/Settings/udev/rules.d
System/Settings/udev/rules.d/55-hpmud.rules
Compile: Installation step failed.

I think i need to play with "unmanaged_files" but don't yet understand
what this options actually do and when and why i need to use this
option ...