Optional de-fork step 2: re-home v2.std.optional to std.optional under the dag root

dag/extdeps/ampere/mt_collins_firmware_release.dag

@@ -3,7 +3,7 @@ module extdeps.ampere.mt_collins_firmware_release
 import std.types { Int, NonEmptyStr, List }
 import std.measure { ByteSize, byte_size, Second, second }
 import extdeps.crypto.hash { sha256_digest }
-import v2.std.optional { Present }
+import std.optional { Present }
 import extdeps.boards.types { AmpereMtCollins }
 import extdeps.firmware.types {
   FirmwareReleaseRow, FirmwareTarget, FirmwareSemanticVersion,

dag/extdeps/ampere/nvparam.dag

@@ -5,7 +5,7 @@ import v2.std.collection { empty_map, map_insert, map_lookup }
 import std.types { Int, List, Map, NonEmptyStr, String }
 import std.measure { ByteSize, byte_size }
 import std.decl_ref { DeclarationRef, WholeDeclaration }
-import v2.std.optional { Present }
+import std.optional { Present }
 import extdeps.external_authority { ExternalAuthority, ExternalModelScope, ExternalSubjectRef }
 import extdeps.uri { Uri, Https }
 

dag/extdeps/ampere/ras_error_section.dag

@@ -2,7 +2,7 @@ module extdeps.ampere.ras_error_section
 
 import std.types { Bool, Int, List, NonEmptyStr, String }
 import std.decl_ref { DeclarationRef, WholeDeclaration }
-import v2.std.optional { Present }
+import std.optional { Present }
 import extdeps.external_authority { ExternalAuthority, ExternalModelScope, ExternalSubjectRef }
 import extdeps.uri { Uri, Https }
 

dag/extdeps/ampere/smpro_internal_error.dag

@@ -3,7 +3,7 @@ module extdeps.ampere.smpro_internal_error
 import v2.std.algebra { filter }
 import std.types { Bool, Int, List, NonEmptyStr, String }
 import std.decl_ref { DeclarationRef, WholeDeclaration }
-import v2.std.optional { Present }
+import std.optional { Present }
 import extdeps.external_authority { ExternalAuthority, ExternalModelScope, ExternalSubjectRef }
 import extdeps.uri { Uri, Https }
 import extdeps.ampere.smpro_register { smpro_errmon_authority }

dag/extdeps/ampere/smpro_register.dag

@@ -2,7 +2,7 @@ module extdeps.ampere.smpro_register
 
 import std.types { Bool, Int, List, NonEmptyStr, String }
 import std.decl_ref { DeclarationRef, WholeDeclaration }
-import v2.std.optional { Present }
+import std.optional { Present }
 import extdeps.external_authority { ExternalAuthority, ExternalModelScope, ExternalSubjectRef }
 import extdeps.uri { Uri, Https }
 import extdeps.ampere.scp_diagnostic {

dag/extdeps/apple/info_plist.dag

@@ -1,7 +1,7 @@
 module extdeps.apple.info_plist
 
 import std.types { String, NonEmptyStr, List }
-import v2.std.optional { Present, Absent }
+import std.optional { Present, Absent }
 import std.decl_ref { DeclarationRef, WholeDeclaration }
 import extdeps.external_authority { ExternalAuthority, ExternalModelScope, ExternalSubjectRef }
 import extdeps.uri { Uri, Https }

dag/extdeps/automation/playwright.dag

@@ -1,7 +1,7 @@
 module extdeps.automation.playwright
 
 import std.types { NonEmptyStr, Int, List, brand }
-import v2.std.optional { Present, Absent }
+import std.optional { Present, Absent }
 import extdeps.browser.chromium { ChromiumBuild, chromium_151_0_7922_34 }
 import std.decl_ref { DeclarationRef, WholeDeclaration }
 import extdeps.external_authority { ExternalAuthority, ExternalModelScope, ExternalSubjectRef }

dag/extdeps/bmc/capability.dag

@@ -9,7 +9,7 @@ import std.types { Bool, EpochMs, Int, List, NonEmptyStr, String }
 import extdeps.external_authority { ExternalAuthority }
 import extdeps.uri { Uri, Https }
 import v2.std.algebra { any, filter, length, skip }
-import v2.std.optional { Present }
+import std.optional { Present }
 
 data extdeps_external_authority_anchor: ExternalAuthority = ExternalAuthority {
   uri: Uri {

dag/extdeps/bmc/ipmi.dag

@@ -3,7 +3,7 @@ module extdeps.bmc.ipmi
 import extdeps.external_authority { ExternalAuthority }
 import extdeps.uri { Uri, Https }
 import std.types { Bool, Int, NonEmptyStr, Unit }
-import v2.std.optional { Present, Absent }
+import std.optional { Present, Absent }
 import std.algebra { trim }
 import v2.std.algebra { filter }
 import std.resources { Network }

dag/extdeps/bmc/ipmi_master_write_read.dag

@@ -3,7 +3,7 @@ module extdeps.bmc.ipmi_master_write_read
 import std.types { Bool, Int, List, NonEmptyStr, String }
 import std.algebra { trim }
 import std.decl_ref { DeclarationRef, WholeDeclaration }
-import v2.std.optional { Present }
+import std.optional { Present }
 import extdeps.external_authority { ExternalAuthority, ExternalModelScope, ExternalSubjectRef }
 import extdeps.uri { Uri, Https }
 import extdeps.languages.json.parse { json_hex_nibble }

dag/extdeps/bmc/ipmitool_hpm_check.dag

@@ -2,7 +2,7 @@ module extdeps.bmc.ipmitool_hpm_check
 
 import v2.std.algebra { any, filter }
 import std.types { Bool, Int, List, NonEmptyStr, String }
-import v2.std.optional { Present, Absent }
+import std.optional { Present, Absent }
 import std.algebra { trim }
 import extdeps.external_authority { ExternalAuthority }
 import extdeps.uri { Uri, Https }

dag/extdeps/bmc/redfish.dag

@@ -6,7 +6,7 @@ import extdeps.uri { Uri, Https }
 import extdeps.bmc.types { BmcGroundedHostObservations, BmcTelemetrySnapshot, FanTachSensor, RedfishMemorySummary, RedfishPowerControl, RedfishPowerState, RedfishPowerSubsystem, RedfishProcessorSummary, RedfishSensorReading, RedfishSystemInventory, TemperatureSensor }
 import std.measure { ByteSize, Gibibyte, HardwareThreadCount, gibibyte_to_byte_size, watt, watt_count }
 import std.types { Int, List, NonEmptyStr }
-import v2.std.optional { Present, Absent }
+import std.optional { Present, Absent }
 data extdeps_external_authority_anchor: ExternalAuthority = ExternalAuthority {
   uri: Uri {
     scheme: Https

dag/extdeps/boards/asrock_rack.dag

@@ -44,7 +44,7 @@ import extdeps.uri { Uri, Https }
 import extdeps.crypto.hash { Digest, sha256_digest }
 import std.nat { Nat }
 import std.types { Bool, List, NonEmptyStr, String }
-import v2.std.optional { Present, Absent }
+import std.optional { Present, Absent }
 
 data extdeps_external_authority_anchor: ExternalAuthority = ExternalAuthority {
   uri: Uri {

dag/extdeps/clock/clock.dag

@@ -5,7 +5,7 @@ import extdeps.external_authority { ExternalAuthority }
 import extdeps.uri { Uri, Https }
 import std.types { EpochMs, EpochSecs, Timestamp, Unit }
 import std.nat { Nat }
-import v2.std.optional { Present }
+import std.optional { Present }
 
 
 data extdeps_external_authority_anchor: ExternalAuthority = ExternalAuthority {

dag/extdeps/cloud/gcp/auth_print_access_token.dag

@@ -5,7 +5,7 @@ import std.dissolution { DissolutionCondition, unbound_dissolution }
 import std.types { List, String }
 import extdeps.external_authority { ExternalAuthority }
 import extdeps.uri { Uri, Https }
-import v2.std.optional { Present }
+import std.optional { Present }
 
 data extdeps_external_authority_anchor: ExternalAuthority = ExternalAuthority {
   uri: Uri {

dag/extdeps/cloud/gcp/iam.dag

@@ -6,7 +6,7 @@ import extdeps.uri { Uri, Https }
 import extdeps.cloud.gcp.gcp { GcpProjectId, ServiceAccountEmail, GcpOperation }
 import std.types { Bool, Int, Json, List, NonEmptyStr, Secret, String }
 import v2.std.algebra { filter, fold_list }
-import v2.std.optional { Absent, Present }
+import std.optional { Absent, Present }
 import extdeps.ietf.http_semantics { GET, POST }
 import std.resources { Network }
 import extdeps.transports.rest { RestResult }

dag/extdeps/cloud/gcp/secret_manager.dag

@@ -8,7 +8,7 @@ import extdeps.external_authority { ExternalAuthority }
 import extdeps.uri { Uri, Https }
 import std.types { Bool, Bytes, Int, List, Map, NonEmptyStr, Secret, String, brand }
 import v2.std.algebra { fold_list, length, skip }
-import v2.std.optional { Present }
+import std.optional { Present }
 // GcpProjectId and GcpErrorShape were reached as BARE references before this
 // import existed, which resolves only when some unrelated module in the assembled
 // closure happens to have dragged their definers into the pool -- accidental

dag/extdeps/cloudflare/r2_lifecycle.dag

@@ -2,7 +2,7 @@ module extdeps.cloudflare.r2_lifecycle
 import std.resources { Network }
 
 import std.types { NonEmptyStr, List, Secret, Int, Bool, Json }
-import v2.std.optional { Present, Absent }
+import std.optional { Present, Absent }
 import v2.std.algebra { skip }
 import std.decl_ref { DeclarationRef, WholeDeclaration }
 import extdeps.uri { Uri, Https }

dag/extdeps/colo/types.dag

@@ -1,7 +1,7 @@
 module extdeps.colo.types
 
 import std.types { NonEmptyStr, List, Bool, Int }
-import v2.std.optional { Optional, Present, Absent }
+import std.optional { Optional, Present, Absent }
 import std.nat { Nat }
 import std.measure {
   MoneyPerMonth, MoneyOnce, MoneyPerHour,

dag/extdeps/container/oci/linux.dag

@@ -4,7 +4,7 @@ module extdeps.container.oci.linux
 import extdeps.external_authority { ExternalAuthority }
 import extdeps.uri { Uri, Https }
 import std.types { Bool, FilePath, Int, List, String }
-import v2.std.optional { Present }
+import std.optional { Present }
 data extdeps_external_authority_anchor: ExternalAuthority = ExternalAuthority {
   uri: Uri {
     scheme: Https

dag/extdeps/cpu/machine_shape.dag

@@ -5,7 +5,7 @@ import extdeps.external_authority { ExternalAuthority }
 import extdeps.uri { Uri, Https }
 import extdeps.cpu.types { CpuModelCatalogRow }
 import std.machine_shape { DomainId, ExecutionDomain, LevelId, MachineShape, MachineShapeConstruction, MemoryLevel, MemoryShape, execution_shape_independent_lanes }
-import v2.std.optional { Present }
+import std.optional { Present }
 data extdeps_external_authority_anchor: ExternalAuthority = ExternalAuthority {
   uri: Uri {
     scheme: Https

dag/extdeps/docker/cli.dag

@@ -5,7 +5,7 @@ import extdeps.exec.program { ProgramIdentity, uncataloged_program }
 import std.types { String, Bool, List, NonEmptyStr, FilePath, Int }
 import std.nat { Nat }
 import std.measure { Second, second, second_count, ByteSize, byte_size_count }
-import v2.std.optional { Present, Absent }
+import std.optional { Present, Absent }
 import std.algebra { trim }
 import extdeps.external_authority { ExternalAuthority }
 import extdeps.uri { Uri, Https }

dag/extdeps/ethtool/ethtool.dag

@@ -1,7 +1,7 @@
 module extdeps.ethtool
 
 import std.types { NonEmptyStr, String, List, Bool, Unit, Int }
-import v2.std.optional { Present, Absent }
+import std.optional { Present, Absent }
 import std.algebra { trim }
 import extdeps.external_authority { ExternalAuthority, ExternalModelScope, ExternalSubjectRef }
 import std.decl_ref { DeclarationRef, WholeDeclaration }

dag/extdeps/external_authority.dag

@@ -1,4 +1,5 @@
 module extdeps.external_authority
+import std.optional { Absent, Present }
 
 import std.types { NonEmptyStr, List }
 import std.decl_ref { DeclarationRef }

dag/extdeps/firmware/types.dag

@@ -3,7 +3,7 @@ module extdeps.firmware.types
 import std.nat { Nat }
 import std.measure { ByteSize, byte_size }
 import std.types { Bool, EpochMs, NonEmptyStr, List, list_length }
-import v2.std.optional { Present, Absent }
+import std.optional { Present, Absent }
 import extdeps.crypto.hash { Digest }
 import extdeps.boards.types { BaseboardModel }
 import std.decl_ref { DeclarationRef, WholeDeclaration }

dag/extdeps/huggingface/hub.dag

@@ -1,7 +1,7 @@
 module extdeps.huggingface.hub
 
 import std.types { String, Bool, List, NonEmptyStr }
-import v2.std.optional { Present, Absent }
+import std.optional { Present, Absent }
 import std.nat { Nat }
 import std.measure { ByteSize, Gibibyte, gibibyte_ceiling }
 import extdeps.external_authority { ExternalAuthority }

dag/extdeps/iw/iw.dag

@@ -2,7 +2,7 @@ module extdeps.iw
 
 import std.types { NonEmptyStr, String, List, Int }
 import std.algebra { trim }
-import v2.std.optional { Present, Absent }
+import std.optional { Present, Absent }
 import v2.std.algebra { filter }
 import extdeps.external_authority { ExternalAuthority, ExternalModelScope, ExternalSubjectRef }
 import std.decl_ref { DeclarationRef, WholeDeclaration }

dag/extdeps/languages/yaml/ingest.dag

@@ -2,7 +2,7 @@ module extdeps.languages.yaml.ingest
 
 import extdeps.external_authority { ExternalAuthority }
 import extdeps.uri { Uri, Https }
-import v2.std.optional { Present, Absent }
+import std.optional { Present, Absent }
 import std.algebra { trim }
 import extdeps.languages.yaml.types {
   YamlValue, YamlKeyValue,

dag/extdeps/languages/yaml/types.dag

@@ -2,7 +2,7 @@ module extdeps.languages.yaml.types
 
 import extdeps.external_authority { ExternalAuthority }
 import extdeps.uri { Uri, Https }
-import v2.std.optional { Present, Absent }
+import std.optional { Present, Absent }
 
 data extdeps_external_authority_anchor: ExternalAuthority = ExternalAuthority {
   uri: Uri {

dag/extdeps/linux/cgroup_v1_memory.dag

@@ -9,7 +9,7 @@ import extdeps.uri { Https, Uri }
 import std.measure { ByteSize, byte_size, byte_size_count }
 import std.nat { Nat }
 import std.types { Int, NonEmptyStr, String, List }
-import v2.std.optional { Present, Absent }
+import std.optional { Present, Absent }
 
 data extdeps_external_authority_anchor: ExternalAuthority = ExternalAuthority {
   uri: Uri {

dag/extdeps/linux/cgroup_v2_memory.dag

@@ -10,7 +10,7 @@ import extdeps.uri { Https, Uri }
 import std.measure { ByteSize, byte_size, byte_size_count }
 import std.types { Int, NonEmptyStr, String, List }
 import std.nat { Nat }
-import v2.std.optional { Present, Absent }
+import std.optional { Present, Absent }
 
 data extdeps_external_authority_anchor: ExternalAuthority = ExternalAuthority {
   uri: Uri {

dag/extdeps/linux/diskstats.dag

@@ -11,7 +11,7 @@ import std.decl_ref { DeclarationRef, WholeDeclaration }
 import extdeps.external_authority { ExternalAuthority, ExternalModelScope, ExternalSubjectRef }
 import extdeps.uri { Https, Uri }
 import extdeps.linux.kernel { LinuxKernelRelease }
-import v2.std.optional { Present, Absent }
+import std.optional { Present, Absent }
 
 // /proc/diskstats, Documentation/admin-guide/iostats.rst. The 14-field-after-name layout this
 // module reads has been stable since 2.6; later kernels APPEND discard (4.18) and flush (5.5)

dag/extdeps/linux/edac.dag

@@ -6,7 +6,7 @@ import extdeps.linux.kernel { LinuxKernelModuleName, LinuxKernelRelease }
 import extdeps.uri { Uri, Https }
 import std.decl_ref { DeclarationRef, WholeDeclaration }
 import std.measure { MemoryControllerCount, memory_controller_count, memory_controller_count_value }
-import v2.std.optional { Absent, Present }
+import std.optional { Absent, Present }
 import std.types { Bool, NonEmptyStr, Unit }
 data extdeps_external_authority_anchor: ExternalAuthority = ExternalAuthority {
   uri: Uri {

dag/extdeps/linux/proc_mountinfo.dag

@@ -1,7 +1,7 @@
 module extdeps.linux.proc_mountinfo
 
 import std.types { NonEmptyStr, String, List, Bool, Int }
-import v2.std.optional { Present, Absent }
+import std.optional { Present, Absent }
 import std.algebra { trim }
 import extdeps.external_authority { ExternalAuthority }
 import extdeps.uri { Uri, Https }

dag/extdeps/linux/proc_net_tcp.dag

@@ -1,7 +1,7 @@
 module extdeps.linux.proc_net_tcp
 
 import std.types { NonEmptyStr, List, Bool, Int, Port }
-import v2.std.optional { Present, Absent }
+import std.optional { Present, Absent }
 import std.algebra { trim }
 import v2.std.algebra { any }
 import extdeps.numeric.base16 { base16_word_value }

dag/extdeps/linux/proc_uptime.dag

@@ -4,7 +4,7 @@ import std.types { Int, String }
 import std.nat { Nat }
 import std.measure { Millisecond, millisecond, milliseconds_per_second }
 import std.checked_arithmetic { checked_int_to_nat }
-import v2.std.optional { Present, Absent }
+import std.optional { Present, Absent }
 import v2.std.algebra { skip }
 import std.decimal { decimal_digits_only }
 import extdeps.external_authority { ExternalAuthority }

dag/extdeps/linux/procfs.dag

@@ -2,7 +2,7 @@ module extdeps.linux.procfs
 
 import std.types { NonEmptyStr, List, Bool, Unit, Int, String }
 import std.algebra { trim }
-import v2.std.optional { Present, Absent }
+import std.optional { Present, Absent }
 import std.os.types { KernelFamily, Linux, Darwin, WindowsNt, LinuxGuestOnWindows }
 import extdeps.external_authority { ExternalAuthority, ExternalModelScope, ExternalSubjectRef }
 import extdeps.uri { Uri, Https }

dag/extdeps/linux/psi.dag

@@ -11,7 +11,7 @@ import std.decl_ref { DeclarationRef, WholeDeclaration }
 import extdeps.external_authority { ExternalAuthority, ExternalModelScope, ExternalSubjectRef }
 import extdeps.uri { Https, Uri }
 import extdeps.linux.kernel { LinuxKernelRelease }
-import v2.std.optional { Present, Absent }
+import std.optional { Present, Absent }
 
 // Pressure Stall Information, Documentation/accounting/psi.rst. The interface first shipped in
 // Linux 4.20; the per-cgroup files (memory.pressure, io.pressure, cpu.pressure) in cgroup-v2 share

dag/extdeps/linux/tun_fdinfo.dag

@@ -2,7 +2,7 @@ module extdeps.linux.tun_fdinfo
 
 import std.types { String, NonEmptyStr, Bool, Int, List }
 import std.algebra { trim }
-import v2.std.optional { Present, Absent }
+import std.optional { Present, Absent }
 import extdeps.external_authority { ExternalAuthority }
 import extdeps.uri { Uri, Https }
 import extdeps.filesystem.filesystem_io {

dag/extdeps/llm/claude_setup_token_cli.dag

@@ -15,7 +15,7 @@ import std.measure {
   character_count,
   measure_le,
 }
-import v2.std.optional { Present, Absent }
+import std.optional { Present, Absent }
 import extdeps.external_authority { ExternalAuthority, ExternalModelScope, ExternalSubjectRef }
 import extdeps.llm.cli { claude_cli_external_authority_anchor }
 import std.decl_ref { DeclarationRef, WholeDeclaration }

dag/extdeps/network/arista_7050s_52.dag

@@ -22,7 +22,7 @@ import extdeps.vendor { Vendor }
 import extdeps.hardware { Hardware }
 import extdeps.external_authority { ExternalAuthority, ExternalModelScope, ExternalSubjectRef }
 import extdeps.uri { Uri, Https }
-import v2.std.optional { Present }
+import std.optional { Present }
 
 // THE DCS-7050S-52, ARISTA'S 52-PORT 1/10GBE SFP+ SWITCH IN THE 7050 SERIES. Modelled from the
 // Arista 7050S datasheet read 2026-09-03. The canonical authority is the datasheet at

dag/extdeps/network/mikrotik_crs812.dag

@@ -24,7 +24,7 @@ import extdeps.vendor { Vendor }
 import extdeps.hardware { Hardware }
 import extdeps.external_authority { ExternalAuthority, ExternalModelScope, ExternalSubjectRef }
 import extdeps.uri { Uri, Https }
-import v2.std.optional { Absent }
+import std.optional { Absent }
 
 // THE CRS812-8DS-2DQ-2DDQ-RM, MIKROTIK'S 400G TOP-OF-RACK / LEAF SWITCH. This is the orderable
 // rack-mount product code (the "RM" suffix); MikroTik markets the family as "CRS812 DDQ".

dag/extdeps/network/tp_link.dag

@@ -7,7 +7,7 @@ import extdeps.network.switch_types { NetworkSwitchCatalogRow, SwitchPortGroup }
 import extdeps.vendor.tp_link { tp_link }
 import extdeps.external_authority { ExternalAuthority, ExternalModelScope, ExternalSubjectRef }
 import extdeps.uri { Uri, Https }
-import v2.std.optional { Present }
+import std.optional { Present }
 
 data extdeps_external_authority_anchor: ExternalAuthority = ExternalAuthority {
   uri: Uri {

dag/extdeps/networkmanager/nmcli.dag

@@ -2,7 +2,7 @@ module extdeps.networkmanager.nmcli
 
 import std.types { NonEmptyStr, String, List, Int, Bool }
 import std.algebra { trim }
-import v2.std.optional { Present, Absent }
+import std.optional { Present, Absent }
 import v2.std.algebra { filter, list_head, list_tail, HeadFound, HeadAbsent, TailFound, TailAbsent }
 import extdeps.external_authority { ExternalAuthority, ExternalModelScope, ExternalSubjectRef }
 import std.decl_ref { DeclarationRef, WholeDeclaration }