set tcl_versions(8.6.3) 8.6.3
	set tcl_versions(8.6.4) 8.6.4
	set tcl_versions(8.6.5) 8.6.5
	set tcl_versions(8.6.6) 8.6.6
	set tcl_versions(8.6.7) 8.6.7
	set tcl_versions(8.6.8) 8.6.8
	set tcl_versions(8.6.9) 8.6.9
	set tcl_versions(8.6.10) 8.6.10
	set tcl_versions(fossil_trunk) "Fossil Trunk Tip"

	set tcl_version_list [lsort -dictionary [array names tcl_versions]]
	set tcl_version_selected [lindex $tcl_version_list end-1]

	# Platforms
	set platforms(android-arm) "Android/ARM"

		close $secretfd

		## Compute basic key	
		set key [list $secret $build_platform $cache_tcl_version $cache_kitcreator_version $build_packages]

		## Update key with options in deterministic order
		foreach option [lsort -dictionary [array names build_options]] {
			switch -- $option {
				"threaded" - "kitdll" - "debug" {
					# For boolean options, skip them if they are not enabled
					if {!$build_options($option)} {
						continue
					}
				}
			}
			lappend key [list "option:$option" $build_options($option)]
		}

		## Convert key to a user-consumable string via hashing
		set key [string tolower [sha1::sha1 -hex $key]]

		# Determine filename