3.257.0

3.257.0 (2026-08-13)

Features

• [cli] Offer to create a first project after logging in to an account with no stacks #24133
• [cli/do] Auto-assign identifiers to existing stack resources in pulumi do input expressions, and add pulumi do show-resources to list them #24184
• [cli/do] Make "pulumi do <pkg> <resource> patch <name> work in stateful mode, overlaying the supplied inputs onto the existing snippet" #24295
• [cli/state] Implement pulumi state get to show individual resources #24191
• [cli/do] Fall back to an auto-created project and stack under PULUMI_HOME when pulumi do is invoked outside of a Pulumi project #24231

Bug Fixes

• [sdkgen/go] Generated output-form invokes pass their arguments to the core SDK without resolving them first, so invoke dependencies can be inferred from arguments; generated SDKs now require pulumi SDK v3.255.0 or later #24060
• [cli] Make 'pulumi stack history events --summary report the program errors from the language host #24111
• [cli/cloud] pulumi api: repeated -H/--header values for the same header name now all reach the wire, instead of each one silently overwriting the last #24180
• [cli/package] Maintain --server when adding to the packages section of Pulumi.yaml #24189
• [sdk/go] Fix panics in hooks to not crash the entire process #24218
• [programgen/go] for expressions are now generated as Go loops #24228
• [programgen/go] Fix invalid _ := index statement emitted for resources with a numeric range whose value variable is unused #24227
• [sdk/python] Report an error instead of hanging when a Python resource depends on its own parent #24230
• [sdkgen/go] Generate the missing Go input types for resource input properties that are deeply nested collections of object types #24236
• [programgen/go] Rename properties that collide with reserved names (e.g. elementType) the same way SDK codegen does, instead of emitting uncompilable code #24235
• [cli/display] Show the value being added when a refresh or provider diff reports an added property #24245
• [cli/plugin] Track when a plugin was last run so pulumi plugin ls reports an accurate last-used time on all platforms #24251
• [engine] Show secrets in diff display when --show-secrets is passed #24253
• [cli] Exit promptly when a command is cancelled while an HTTP request is being retried #24276

Improvements

• [sdk/nodejs] Improve error message when resource registrations are still pending when pulumi exits #24082
• [cli] Pass the invoked command (e.g. pulumi new) to the browser-based login/signup flow so Pulumi Cloud can attribute signups to the command that triggered them #24192

Miscellaneous

• [sdkgen] Extension-parameterized packages now namespace their resource and function tokens under their own package name rather than the base provider's #24143
• [java] Upgrade java to v1.35.0 #24202
• [backend/diy] The deprecation warning is now an error. PULUMI_DIY_BACKEND_IGNORE_DEPRECATION_WARNING is now PULUMI_DIY_BACKEND_IGNORE_DEPRECATION_ERROR. #24216
• [java] Upgrade java to v1.36.0 #24243
• [sdk/dotnet] Upgrade dotnet to v3.111.1 #24249