Stack migrate, share logs, and Neo ACP agent ship

3.254.0 (2026-07-23)

Features

• [cli] Add pulumi logs share command for sharing logs with Pulumi #22546
• [cli] Add pulumi stack migrate to migrate a stack from another backend to the currently logged-in backend, including re-encrypting config secrets and stack state under the target secrets provider #22902
• [cli/config] Add an --override-env flag to up, preview, destroy, and refresh to substitute imported environments for a single run without editing the stack config #23562
• [cli] Add pulumi neo acp to run Neo as an Agent Client Protocol agent over stdio for ACP-capable editors, with read-only and plan mode exposed as session config options #23886
• [cli/neo] Retry transient pulumi neo stream and message-send failures, and add pulumi neo resume with chat history #23835
• [cli/neo] Make Ctrl+C clear typed text and preserve Ctrl+A/Ctrl+E line navigation in pulumi neo #23932
• [cli/do] Add upsert to do, allowing resources to be statefully created or updated in a stack #23813
• [sdk/python] Add pulumi.run for natively awaited Python program entrypoints that can return stack outputs #23945
• [cli/do] Allow expressions for number inputs #23954
• [cli/do] Allow expressions for boolean inputs #23967
• [cli/policy] Add --runtime-options to pulumi policy new #23992
• [cli/do] Add support for stateful create #23996
• [cli/do] Add support for stateful delete #24000

Bug Fixes

• [sdkgen/go] Fix Go codegen for plain properties nested inside non-plain objects #22524
• [cli/neo] Keep pulumi neo connected during quiet periods when the event stream only receives keep-alive heartbeats #23935
• [engine] Validate snippets before persisting them #23920
• [backend] Fix dangling ReplaceWith references in the journal replayer #23927
• [cli/do] Fix the converter plugin not being called if just attributes needed converting #23948
• [programgen/go] Generate compilable Go for programs that use discriminated union members as array/list elements #23980

Improvements

• [cli] Align commands with the CLI naming guidelines, adding ls, rm, delete, mv, update, modify, create and setup aliases to list/remove/move/edit/new commands and making state remove and package remove the canonical names with delete kept as an alias #23903
• [cli] Suggest closely-matching commands from the whole command tree when an unknown command is entered #23848
• [cli] Print help but exit with a non-zero code when pulumi is run without a command, matching the behavior of other group commands #23848
• [programgen] Support onError resource hooks in generated Go, NodeJS, and Python programs and in the PCL runtime, retrying the failed operation when the hook command exits successfully #23839
• [protobuf] Add parent and properties fields to ResourceImport so state converters can express resource hierarchy and property filters #23929
• [protobuf] Allow state converters to declare explicit providers as resources in ConvertState responses and attach imported resources to them via the new provider field #23975
• [cli] Redact secrets in property values in logs #23931
• [cli] Make -v<n> --logflow no longer produce separate log files for plugins #23938
• [protobuf] Pass a schema loader target to state converters in ConvertStateRequest #23944
• [cli/import] Allow explicit providers to be declared in the resources section of an import file and referenced by name #23972
• [cli] Remove the template count from pulumi new --help, which required a slow template listing before help could display #23973
• [cli/import] Support inputs and outputs on resources in import files, importing supplied state directly and skipping the provider read when outputs are given #23984

Miscellaneous

• [sdk] Move RetrieveGitFolder to the gitutil package #23955
• [sdk] Move template helpers from workspace to pkg/cmd/pulumi/templates #23963