#
# \brief  Sculpt OS
# \author Norman Feske
# \date   2017-09-07
#

#
# Note: the string must be exactly 5 bytes long.
#
proc sculpt_version { } { return "22.10" }


proc assert_platform_supported { } {

	if {[have_board pc]}          return
	if {[have_board imx8q_evk]}   return
	if {[have_board mnt_reform2]} return
	if {[have_board linux]}       return
	if {[have_board pinephone]}   return

	puts "Platform is unsupported.";
	exit 0;
}

assert_platform_supported


if {[have_spec nova]} {
	proc kernel_output { } { return "novga serial logmem" }
}


##
## Utilities for querying the ingredients of Sculpt
##

##
# Return path to the sculpt definition file that contains the list of
# ingredients
#
proc sculpt_path { } {

	global ::env

	set filename "default-[board].sculpt"
	if {[info exists ::env(SCULPT)]} {
		set filename "$::env(SCULPT)-[board].sculpt" }

	return [select_from_repositories [file join sculpt $filename]]
}


##
# Return list of ingredients of scenario supplied via the 'SCULPT' argument
#
# If 'SCULPT' is not specified, use 'sculpt/default.sculpt'.
#
proc sculpt_ingredients { } {

	global _sculpt_ingredients

	if {![info exists _sculpt_ingredients]} {
		set fh [open [sculpt_path] "RDONLY"]
		set _sculpt_ingredients [split [read $fh] "\n"]
		close $fh
	}

	return $_sculpt_ingredients
}


proc ingredients_of_type { type } {

	set result {}
	set line 1
	foreach i [sculpt_ingredients] {

		# skip comment lines
		if {[string match "#*" $i]} {
			continue }

		# skip empty lines
		if {[string match "" $i]} {
			continue }

		regexp {^(.*?):\s*(.*)\s*$} $i dummy tag values

		if {$tag == $type} {
			lappend result {*}$values}

		incr line
	}
	return $result
}


proc single_ingredient { type default } {

	set ingredient [ingredients_of_type $type]

	if {[llength $ingredient] == 0} {
		return $default }

	if {[llength $ingredient] > 1} {
		puts stderr "Error: ambigious selection of '$type' in [sculpt_path]"
		exit
	}
	return $ingredient
}


proc ingredient_path { type ingredient } {
	return [select_from_repositories [file join sculpt $type $ingredient]] }

proc initial_config_dir { } {
	return [file join [run_dir] initial_config] }

proc initial_config_file { rel_path } {
	return [file join [initial_config_dir] $rel_path] }


##
## System-image content imported from depot archives
##

create_boot_directory


proc prefixed_with_depot_user { paths } {
	return [lmap path $paths { file join [depot_user] $path }] }


import_from_depot [depot_user]/src/[base_src] \
                  [depot_user]/pkg/sculpt \
                  {*}[prefixed_with_depot_user [ingredients_of_type import]]


##
## Static init configuration
##

proc log_route { } {

	global ::env
	if {[info exists ::env(LOG)]} {
		if {$::env(LOG) == "core"} {
			return {<service name="LOG"> <parent/> </service>} } }

	return {<service name="LOG"> <child name="log"/> </service>}
}


proc nic_drv { } {

	if {[have_board pc]}          { return ipxe_nic_drv }
	if {[have_board imx8q_evk]}   { return fec_nic_drv  }
	if {[have_board mnt_reform2]} { return fec_nic_drv  }

	return nic_unavailable
}


proc log_core_start_node { } {

	if {[have_board linux]} return

	return {
	<start name="log_core">
		<resource name="RAM" quantum="1M"/>
		<config period_ms="2000"/>
		<route>
			<service name="ROM" label="log"> <parent label="core_log"/>       </service>
			<service name="Timer">           <child name="timer"/>            </service>
			<service name="LOG" label="log"> <child name="log" label="core"/> </service>
			<any-service> <parent/> </any-service>
		</route>
	</start>}
}


proc log_kernel_start_node { } {

	if {[have_board linux]}     return
	if {[have_board pinephone]} return

	return {
	<start name="log_kernel">
		<binary name="log_core"/>
		<resource name="RAM" quantum="1M"/>
		<config period_ms="2000"/>
		<route>
			<service name="ROM" label="log"> <parent label="kernel_log"/>       </service>
			<service name="Timer">           <child name="timer"/>              </service>
			<service name="LOG" label="log"> <child name="log" label="kernel"/> </service>
			<any-service> <parent/> </any-service>
		</route>
	</start>}
}


install_config {
<config prio_levels="2">
	<parent-provides>
		<service name="ROM"/>
		<service name="IRQ"/>
		<service name="IO_MEM"/>
		<service name="IO_PORT"/>
		<service name="PD"/>
		<service name="RM"/>
		<service name="CPU"/>
		<service name="LOG"/>
		<service name="TRACE"/>
		<service name="VM"/>
	</parent-provides>

	<affinity-space width="2" height="1"/>

	<default-route>
		<any-service> <parent/> <any-child/> </any-service>
	</default-route>

	<default caps="100"/>

	<resource name="RAM" preserve="2M"/>

	<start name="timer" priority="0">
		<resource name="RAM" quantum="1M"/>
		<resource name="CPU" quantum="5"/>
		<provides><service name="Timer"/></provides>
	</start>

	<start name="report_rom" priority="0">
		<binary name="report_rom"/>
		<resource name="RAM" quantum="2M"/>
		<provides> <service name="Report"/> <service name="ROM"/> </provides>
		<config verbose="no">
			<policy label="leitzentrale_config -> leitzentrale"
			        report="global_keys_handler -> leitzentrale"/>
			<policy label="leitzentrale -> manager -> leitzentrale"
			        report="global_keys_handler -> leitzentrale"/>
			<policy label="pointer -> hover" report="nitpicker -> hover"/>
			<policy label="pointer -> xray"
			        report="global_keys_handler -> leitzentrale"/>
			<policy label="pointer -> shape"    report="shape"/>
			<policy label="clipboard -> focus"  report="nitpicker -> focus"/>
			<policy label="drivers -> capslock" report="global_keys_handler -> capslock"/>
			<policy label="runtime -> capslock" report="global_keys_handler -> capslock"/>
			<policy label="drivers -> numlock"  report="global_keys_handler -> numlock"/>
			<policy label="runtime -> clicked"  report="nitpicker -> clicked"/>
			<policy label="nit_focus -> leitzentrale"
			        report="global_keys_handler -> leitzentrale"/>
			<policy label="nit_focus -> slides"
			        report="global_keys_handler -> slides"/>
			<policy label="nit_focus -> hover" report="nitpicker -> hover"/>
			<policy label="slides_gui_fb_config -> slides"
			        report="global_keys_handler -> slides"/>
		</config>
	</start>

	<start name="report_logger" priority="0">
		<binary name="report_rom"/>
		<resource name="RAM" quantum="1M"/>
		<provides> <service name="Report"/> <service name="ROM"/> </provides>
		<config verbose="yes"/>
	</start>

	<start name="config_fs" caps="200" priority="0">
		<binary name="vfs"/>
		<resource name="RAM" quantum="12M"/>
		<provides> <service name="File_system"/> </provides>
		<config>
			<vfs>
				<ram/>
				<import> <tar name="initial_config.tar"/> </import>
			</vfs>
			<policy label="config_fs_rom -> " root="/" />
			<policy label="rw"                root="/" writeable="yes" />
		</config>
	</start>

	<start name="config_fs_rom">
		<binary name="fs_rom"/>
		<resource name="RAM" quantum="10M"/>
		<provides> <service name="ROM"/> </provides>
		<route>
			<service name="File_system"> <child name="config_fs"/> </service>
			<any-service> <parent/> </any-service>
		</route>
	</start>

	<start name="report_fs_rom">
		<binary name="fs_rom"/>
		<resource name="RAM" quantum="3M"/>
		<provides> <service name="ROM"/> </provides>
		<route>
			<service name="File_system"> <child name="report_fs"/> </service>
			<any-service> <parent/> </any-service>
		</route>
	</start>

	<start name="report_fs">
		<binary name="vfs"/>
		<resource name="RAM" quantum="16M"/>
		<provides> <service name="File_system"/> </provides>
		<config>
			<vfs>
				<ram/>
				<import>
					<inline name="log">### start ###</inline>
					<dir name="runtime">
						<inline name="state"><empty/></inline>
						<dir name="wifi_drv">
							<inline name="accesspoints"><empty/></inline>
							<inline name="state">       <empty/></inline>
						</dir>
						<dir name="nic_router"> <inline name="state">    <empty/></inline> </dir>
						<dir name="update">     <inline name="state">    <empty/></inline> </dir>
						<dir name="depot_query"><inline name="blueprint"><empty/></inline> </dir>
					</dir>
				</import>
			</vfs>
			<policy label="fs_report -> "     root="/" writeable="yes"/>
			<policy label="log_terminal -> "  root="/" writeable="yes"/>
			<policy label="report_fs_rom -> " root="/"/>
			<policy label="ro"                root="/"/>
		</config>
	</start>

	<start name="log_terminal">
		<binary name="file_terminal"/>
		<resource name="RAM" quantum="2M"/>
		<provides> <service name="Terminal"/> </provides>
		<config>
			<default-policy filename="log" />
			<vfs> <dir name="dev"> <log/> </dir> <fs/> </vfs>
			<libc stdout="/dev/log"/>
		</config>
		<route>
			<service name="File_system"> <child name="report_fs"/> </service>
			<any-service> <parent/> </any-service>
		</route>
	</start>

	<start name="log">
		<binary name="terminal_log"/>
		<resource name="RAM" quantum="1M"/>
		<provides> <service name="LOG"/> </provides>
		<config/>
		<route>
			<service name="Terminal"> <child name="log_terminal"/> </service>
			<any-service> <parent/> </any-service>
		</route>
	</start>

	} [log_core_start_node] {
	} [log_kernel_start_node] {

	<start name="fs_report">
		<resource name="RAM" quantum="1M"/>
		<provides> <service name="Report"/> </provides>
		<config> <vfs> <fs/> </vfs> </config>
		<route>
			<service name="File_system"> <child name="report_fs"/> </service>
			<any-service> <parent/> </any-service>
		</route>
	</start>

	<start name="drivers" caps="4600" priority="-1" managing_system="yes">
		<resource name="RAM" quantum="200M"/>
		<resource name="CPU" quantum="10"/>
		<binary name="init"/>
		<route>
			} [log_route] {
			<service name="ROM" label="config">
				<child name="config_fs_rom" label="drivers"/> </service>
			<service name="ROM" label_last="capslock">
				<child name="report_rom" label="drivers -> capslock"/> </service>
			<service name="ROM" label_last="event_filter.config">
				<child name="config_fs_rom" label="managed/event_filter"/> </service>
			<service name="ROM" label_prefix="event_filter -> keyboard/">
				<child name="config_fs_rom"/> </service>
			<service name="ROM" label_last="fb_drv.config">
				<child name="config_fs_rom" label="managed/fb_drv"/> </service>
			<service name="ROM" label_last="gpu_drv.config">
				<child name="config_fs_rom" label="gpu_drv"/> </service>
			<service name="ROM" label_last="numlock_remap.config">
				<child name="config_fs_rom" label="numlock_remap"/> </service>
			<service name="ROM" label_last="usb_policy">
				<child name="config_fs_rom" label="usb"/> </service>
			<service name="ROM" label_last="system">
				<child name="config_fs_rom" label="managed/system"/> </service>
			<service name="ROM" label_last="modem.config">
				<child name="config_fs_rom" label="managed/modem"/> </service>
			<service name="ROM" label_last="audio.config">
				<child name="config_fs_rom" label="managed/audio"/> </service>
			<service name="ROM" label_last="numlock">  <child name="report_rom"/> </service>
			<service name="Timer">   <child name="timer"/> </service>
			<service name="Capture"> <child name="nitpicker"/> </service>
			<service name="Event">   <child name="nitpicker"/> </service>
			<service name="Report">  <child name="fs_report"/> </service>
			<any-service> <parent/> </any-service>
		</route>
		<provides>
			<service name="Block"/>
			<service name="Usb"/>
			<service name="Platform"/>
			<service name="Gpu"/>
		</provides>
	</start>

	<start name="nitpicker" caps="1000" priority="0">
		<resource name="RAM" quantum="12M"/>
		<resource name="CPU" quantum="10"/>
		<provides>
			<service name="Gui"/> <service name="Capture"/> <service name="Event"/>
		</provides>
		<route>
			<service name="ROM" label="config">
				<child name="config_fs_rom" label="nitpicker"/> </service>
			<service name="ROM" label="focus">
				<child name="nit_focus"/> </service>
			<service name="Report" label="keystate">
				<child name="report_logger"/> </service>
			<service name="Report"> <child name="report_rom"/> </service>
			<service name="Timer">  <child name="timer"/>      </service>
			<any-service> <parent/> </any-service>
		</route>
	</start>

	<!-- override user focus when leitzentrale is active -->
	<start name="nit_focus" priority="-1">
		<binary name="rom_filter"/>
		<resource name="RAM" quantum="1M"/>
		<provides> <service name="ROM"/> </provides>
		<config>
			<input name="lockscreen_enabled" rom="hover" node="hover">
				<attribute name="label" /> </input>
			<input name="leitzentrale_enabled" rom="leitzentrale" node="leitzentrale">
				<attribute name="enabled" /> </input>
			<input name="slides_enabled" rom="slides" node="slides">
				<attribute name="enabled" /> </input>
			<output node="focus">
				<if>
					<has_value input="lockscreen_enabled" value="lock_screen" />
					<then>
						<attribute name="label" value="lock_screen"/>
					</then>
					<else>
						<if>
							<has_value input="leitzentrale_enabled" value="yes" />
							<then>
								<attribute name="label" value="leitzentrale -> manager -> fader -> "/>
							</then>
							<else>
								<if>
									<has_value input="slides_enabled" value="yes" />
									<then>
										<attribute name="label" value="slides"/>
									</then>
									<else>
										<attribute name="label" value="runtime -> focus"/>
									</else>
								</if>
							</else>
						</if>
					</else>
				</if>
			</output>
		</config>
		<route>
			<service name="ROM" label="hover">        <child name="report_rom"/> </service>
			<service name="ROM" label="leitzentrale"> <child name="report_rom"/> </service>
			<service name="ROM" label="slides">       <child name="report_rom"/> </service>
			<any-service> <parent/> </any-service>
		</route>
	</start>

	<start name="pointer" priority="-1">
		<resource name="RAM" quantum="2M"/>
		<provides> <service name="Report"/> </provides>
		<config shapes="yes"/>
		<route>
			<service name="Gui"> <child name="nitpicker"/>  </service>
			<service name="ROM" label="hover"> <child name="report_rom"/> </service>
			<service name="ROM" label="xray">  <child name="report_rom"/> </service>
			<any-service> <parent/> <any-child/> </any-service>
		</route>
	</start>

	<start name="global_keys_handler" priority="-1">
		<resource name="RAM" quantum="1M"/>
		<route>
			<service name="Report"> <child name="report_rom"/> </service>
			<service name="Gui">    <child name="nitpicker"/>  </service>
			<service name="Timer">  <child name="timer"/>      </service>
			<service name="ROM" label="config">
				<child name="config_fs_rom" label="global_keys"/> </service>
			<any-service> <parent/> </any-service>
		</route>
	</start>

	<start name="leitzentrale_config" priority="-1">
		<binary name="rom_filter"/>
		<resource name="RAM" quantum="1M"/>
		<provides><service name="ROM"/></provides>
		<route>
			<service name="ROM" label="leitzentrale"> <child name="report_rom"/> </service>
			<service name="ROM" label="config">
				<child name="config_fs_rom" label="leitzentrale"/> </service>
			<any-service> <parent/> </any-service>
		</route>
	</start>

	<start name="clipboard" priority="-1">
		<resource name="RAM" quantum="2M"/>
		<provides>
			<service name="ROM"/> <service name="Report"/>
		</provides>
		<route>
			<service name="ROM" label="config">
				<child name="config_fs_rom" label="clipboard"/> </service>
			<service name="ROM" label="focus"> <child name="report_rom"/> </service>
			<any-service> <parent/> <any-child/> </any-service>
		</route>
	</start>

	<start name="leitzentrale" caps="2350" priority="-1">
		<binary name="init"/>
		<resource name="RAM" quantum="130M"/>
		<resource name="CPU" quantum="35"/>
		<affinity xpos="1" width="1"/> <!-- decouple leitzentrale from boot CPU -->
		<provides>
			<service name="Gui"/>
			<service name="Capture"/>
			<service name="Event"/>
			<service name="File_system"/> <!-- fonts -->
			<service name="ROM"/>         <!-- view dialog ROMs -->
			<service name="Report"/>      <!-- view hover reports -->
		</provides>
		<route>
			} [log_route] {
			<service name="ROM" label="config">
				<child name="leitzentrale_config"/> </service>
			<service name="ROM" label_prefix="report -> ">
				<child name="report_fs_rom"/> </service>
			<service name="ROM" label_prefix="manager -> report -> ">
				<child name="report_fs_rom"/> </service>
			<service name="ROM" label_prefix="manager -> config -> ">
				<child name="config_fs_rom"/> </service>
			<service name="ROM" label_prefix="config -> ">
				<child name="config_fs_rom"/> </service>
			<service name="ROM" label="manager -> nitpicker_hover">
				<child name="report_rom"/> </service>
			<service name="ROM" label="manager -> leitzentrale">
				<child name="report_rom"/> </service>
			<service name="Report"> <child name="fs_report"/> </service>
			<service name="Gui"> <child name="nitpicker"/> </service>
			<service name="Timer"> <child name="timer"/> </service>
			<service name="File_system" label="config">
				<child name="config_fs" label="rw"/> </service>
			<service name="File_system" label="report">
				<child name="report_fs" label="ro"/> </service>
			<service name="File_system" label="report">
				<child name="report_fs" label="ro"/> </service>
			<any-service> <parent/> </any-service>
		</route>
	</start>

	<start name="runtime" caps="50000" priority="-1">
		<binary name="init"/>
		<resource name="RAM" quantum="32G"/>
		<resource name="CPU" quantum="40"/>
		<route>
			<service name="ROM" label="config">
				<child name="config_fs_rom" label="managed/runtime"/> </service>
			<service name="ROM" label_prefix="config -> ">
				<child name="config_fs_rom"/> </service>
			<service name="ROM" label="capslock">
				<child name="report_rom"/> </service>
			<service name="ROM" label="clicked">
				<child name="report_rom"/> </service>
			<service name="File_system" label="config">
				<child name="config_fs" label="rw"/> </service>
			<service name="File_system" label="report">
				<child name="report_fs" label="ro"/> </service>
			<service name="Block"> <child name="drivers"/> </service>
			<service name="Usb"> <child name="drivers"/> </service>
			<service name="Platform" label_prefix="acpica">
				<child name="drivers" label="acpica"/> </service>
			<service name="Platform"> <child name="drivers"/> </service>
			<service name="Gui" label_prefix="leitzentrale">
				<child name="leitzentrale"/> </service>
			<service name="Gui" label="backdrop">
				<child name="nitpicker" label="backdrop"/> </service>
			<service name="Gui" label="lock_screen">
				<child name="nitpicker" label="lock_screen"/> </service>
			<service name="Gui"> <child name="nitpicker"/> </service>
			<service name="Gpu"> <child name="drivers"/> </service>
			<service name="Timer"> <child name="timer"/> </service>
			<service name="Report" label_suffix="-> shape"> <child name="pointer"/> </service>
			<service name="Report" label="inspect -> clipboard">
				<child name="clipboard" label="leitzentrale -> manager -> fader ->  -> clipboard"/> </service>
			<service name="Report" label="editor -> clipboard">
				<child name="clipboard" label="leitzentrale -> manager -> fader ->  -> clipboard"/> </service>
			<service name="ROM" label="inspect -> clipboard">
				<child name="clipboard" label="leitzentrale -> manager -> fader ->  -> clipboard"/> </service>
			<service name="ROM" label="editor -> clipboard">
				<child name="clipboard" label="leitzentrale -> manager -> fader ->  -> clipboard"/> </service>
			<service name="Report" label_suffix="-> clipboard"> <child name="clipboard"/> </service>
			<service name="ROM"    label_suffix="-> clipboard"> <child name="clipboard"/> </service>
			<service name="Report" label_prefix="leitzentrale ->">
				<child name="leitzentrale"/> </service>
			<service name="ROM" label_prefix="leitzentrale ->">
				<child name="leitzentrale"/> </service>
			<service name="File_system" label="leitzentrale -> fonts">
				<child name="leitzentrale" label="fonts"/> </service>
			<service name="Report"> <child name="fs_report"/> </service>
			<service name="LOG" label="unlogged"> <parent/> </service>
			} [log_route] {
			<service name="ROM" label="nic_drv"> <parent label="} [nic_drv] {"/> </service>
			<service name="Event"   label="global">       <child name="nitpicker"/>    </service>
			<service name="Event"   label="leitzentrale"> <child name="leitzentrale"/> </service>
			<service name="Capture" label="global">       <child name="nitpicker"/>    </service>
			<service name="Capture" label="leitzentrale"> <child name="leitzentrale"/> </service>
			<any-service> <parent/> </any-service>
		</route>
	</start>

</config>}


##
## Initial content of the config file system
##

#
# The directory structure for the initial content is created at the run
# directory, which is imported as 'initial_config.tar' into the config fs.
#

# directory structure
foreach subdir { launcher depot managed keyboard } {
	file mkdir [file join [initial_config_dir] $subdir] }

# configs that are managed by the sculpt manager if absent
set optional_configs {
	fonts
	nic_router
	event_filter
	wifi
	runtime
	gpu_drv
}

foreach config $optional_configs {
	set ingredient [single_ingredient $config ""]
	if {$ingredient != ""} {
		set from [ingredient_path $config $ingredient]
		set to   [initial_config_file $config]
		copy_file $from $to } }

# configs that are expected to be always present
set required_configs {
	nitpicker
	deploy
	fb_drv
	clipboard
	drivers
	numlock_remap
	global_keys
	leitzentrale
	usb
	system
	ram_fs
}

foreach config $required_configs {
	set ingredient [single_ingredient $config "default"]
	set from [ingredient_path $config $ingredient]
	set to   [initial_config_file $config]
	check_xml_syntax $from
	copy_file $from $to
}

# selection of depot users (pubkey and download files) and launchers
foreach ingredient [ingredients_of_type launcher] {
	check_xml_syntax [ingredient_path launcher $ingredient] }

foreach type { depot launcher } {
	foreach ingredient [ingredients_of_type $type] {
		set from [ingredient_path $type $ingredient]
		set to   [file join [initial_config_dir] $type $ingredient]
		file copy $from $to } }

copy_file [genode_dir]/repos/gems/recipes/pkg/sculpt/README [initial_config_file README]
copy_file [genode_dir]/repos/gems/run/sculpt/vimrc          [initial_config_file vimrc]

# keyboard layouts
foreach file { en_us de_ch de_de fr_ch fr_fr special } {
	set from [genode_dir]/repos/os/src/server/event_filter/$file.chargen
	set to   [file join [initial_config_dir] keyboard $file]
	check_xml_syntax $from
	copy_file $from $to }


#
# Pre-populate the managed/ directory of the config fs to avoid diagnostic
# warnings by components starting up before the sculpt manager has generated
# the directory content for the first time.
#

proc managed_config_path { name } {
	return [file join [initial_config_dir] managed $name] }

set fd [open [managed_config_path installation] w]
puts $fd "<installation arch=\"[depot_spec]\"/>"
close $fd

set fd [open [managed_config_path depot_query] w]
puts $fd "<query/>"
close $fd

foreach config { fonts wifi runtime event_filter system } {
	set ingredient [single_ingredient $config "default"]
	if {$ingredient != ""} {
		set from [ingredient_path $config $ingredient]
		set to   [managed_config_path $config]
		check_xml_syntax $from
		copy_file $from $to
	}
}

copy_file [file join [initial_config_dir] fb_drv] [managed_config_path fb_drv]


#
# VERSION file at the root of the config fs, add newline for 'cat /VERSION'
#

set fd [open [initial_config_file VERSION] w]
puts $fd "[sculpt_version]"
close $fd

# supply VERSION as a boot module to the sculpt manager
file copy [initial_config_file VERSION] [run_dir]/genode/VERSION


##
# Return list of 'pkg' attribute values found in 'type' nodes in an XML file
#
proc pkg_attribute_values { xml_file node_path } {

	set xpath "$node_path/attribute::pkg"
	set values {}

	if {[catch {
		foreach attr [exec xmllint --xpath $xpath $xml_file] {
			regexp {^pkg="(.*)"$} $attr dummy value
			lappend values $value
		}
	}]} {
		# no pkg attribute present in 'xml_file'
	}
	return $values
}


##
# Return list of pkg archives reference by the launchers and deploy config
#
proc referenced_pkg_values { } {

	set values {}

	# scan launchers
	foreach launcher [ingredients_of_type launcher] {
		set path [file join [initial_config_dir] launcher $launcher]
		lappend values {*}[pkg_attribute_values $path launcher]
	}

	# scan deploy config
	lappend values {*}[pkg_attribute_values [initial_config_file deploy] config/start]

	return [lsort -unique $values]
}


#
# Replace pkg values of the form "name" by the form "user/pkg/name" suitable as
# arguments for '_collect_from_depot'.
#
proc pkg_archive_paths { values } {

	set result {}
	foreach value $values {
		if {[regexp {/} $value dummy]} {
			lappend result $value
		} else {
			lappend result "[depot_user]/pkg/$value"
		}
	}
	return $result
}


##
# Return which kind of depot archive is wanted: 'tar', 'omit', or 'list'
#
# tar  - includes the depot content referenced by the deploy configuration as
#        tar archive named 'depot.tar'
#
# omit - skips the evaluation of the deploy configuration
#
# list - outputs the list of packages needed for the deployment, which can
#        taken as input for manually publishing those packages
#
proc depot_archive { } {

	global ::env

	set archive "tar"
	if {[info exists ::env(DEPOT)]} {
		set archive "$::env(DEPOT)" }

	if {$archive != "omit" && $archive != "tar" && $archive != "list"} {
		puts stderr "Error: invalid value of DEPOT=$archive variable!" }

	return $archive
}


#
# Trigger the creation / updating of referenced depot content
#
# This step may update pkg versions if '--depot-auto-update' is enabled.
#
if {[depot_archive] == "tar" || [depot_archive] == "list"} {
	_collect_from_depot [pkg_archive_paths [referenced_pkg_values]]
}


#
# Augment deploy config or launcher file with current package versions
#

proc current_pkg { pkg } { return $pkg/[_current_depot_archive_version pkg $pkg] }


#
# Supplement file with versioned pkg archive paths
#
# \path  deploy config or launcher to augment
# \node  XML node type containing the 'pkg' attribute to modify
#
# Each matching XML node is inspected regarding its 'pkg' attribute. If its
# 'pkg' attribute contains a single identifier (rather than a valid pkg path),
# the attribute value is replaced by a valid pkg path referring to the current
# version of the pkg and the [depot_user].
#
proc augment_pkg_versions { path node } {

	set fd [open $path r]
	set content [read $fd]
	close $fd

	# filter 'pkg' attribute
	set pattern "(\<$node\[^\>\]+?pkg=\")(\[^/\]+)(\")"
	while {[regexp $pattern $content dummy head pkg tail]} {
		set pkg_path [depot_user]/pkg/[current_pkg $pkg]
		regsub $pattern $content "$head$pkg_path$tail" content
	}

	# write back the filtered launcher snippet
	set fd [open $path w]
	puts $fd $content
	close $fd
}


# launcher snippets
foreach launcher [ingredients_of_type launcher] {
	augment_pkg_versions [file join [initial_config_dir] launcher $launcher] "launcher" }


# deploy config
augment_pkg_versions [initial_config_file deploy] "start"


# update arch attribute of deploy config
exec sed -i "/config/s/arch=\"\"/arch=\"[depot_spec]\"/" [initial_config_file deploy]


##
## Depot content integrated in the Sculpt image
##

proc create_depot_archive { } {

	if {[depot_archive] == "tar"} {
		create_tar_from_depot_binaries [run_dir]/genode/depot.tar \
                               {*}[pkg_archive_paths [referenced_pkg_values]]

	} elseif {[depot_archive] == "list"} {
		puts "Do not forget to publish:"
		puts [pkg_archive_paths [referenced_pkg_values]]
	}
}

create_depot_archive


#
# Create initial_config.tar to be mounted at the root of the config fs
#

exec sh -c "tar cf [run_dir]/genode/initial_config.tar -C [initial_config_dir] ."

file delete -force [initial_config_dir]


##
## Auxiliary boot modules
##

#
# Linux-specific tweaks
#
if {[have_board linux]} {

	#
	# The Linux version of core does not export a platform_info ROM module.
	#
	install_boot_module "platform_info" {<platform/>}

	#
	# Managed dataspaces as used by cached_fs_rom are not supported on Linux.
	#
	copy_file [run_dir]/genode/fs_rom [run_dir]/genode/cached_fs_rom
}


# support for the Leitzentrale GUI
copy_file [genode_dir]/repos/gems/src/app/backdrop/genode_logo.png [run_dir]/genode/
copy_file [genode_dir]/repos/gems/run/sculpt/drop_shadow.png       [run_dir]/genode/


#
# Generate depot index from gems/run/sculpt/index
#

set fd [open [genode_dir]/repos/gems/run/sculpt/index r]
set pkg_index [read $fd]
close $fd

# filter 'pkg' attribute
set pattern {(\<pkg[^\>]+?path=")([^/]+)(")}
while {[regexp $pattern $pkg_index dummy head pkg tail]} {
	set pkg_path [depot_user]/pkg/[current_pkg $pkg]
	regsub $pattern $pkg_index "$head$pkg_path$tail" pkg_index
}

# write filtered pkg index into the depot
file mkdir [depot_dir]/[depot_user]/index
set fd [open [depot_dir]/[depot_user]/index/[sculpt_version] w]
puts $fd $pkg_index
close $fd


##
## Create boot image
##

build [ingredients_of_type build]

append boot_modules [build_artifacts]

build_boot_image $boot_modules