Expand RuntimeConfig and RuntimesConfig typed structs to cover all supported runtimes and fields by Copilot · Pull Request #17911 · github/gh-aw

Copilot · 2026-02-23T12:22:52Z

RuntimeConfig was missing action-repo/action-version fields that the schema and raw map parsing already handled, and RuntimesConfig only modeled 6 of the 11 runtimes in knownRuntimes. Code paths using RuntimesTyped silently dropped these values.

Changes

RuntimeConfig: Added ActionRepo and ActionVersion fields so action overrides are preserved through the typed path
RuntimesConfig: Added the 5 missing runtime fields: Dotnet, Elixir, Haskell, Java, Ruby
parseRuntimesConfig: Populates ActionRepo/ActionVersion from the config map; added case branches for all 5 new runtimes
rust / Serena: Clarified in both the schema descriptions and the languageToRuntime comment that rust is a valid Serena language identifier but produces no GitHub Actions setup step (no entry in knownRuntimes)

// Before
type RuntimeConfig struct {
    Version string `json:"version,omitempty"`
    If      string `json:"if,omitempty"`
}

// After
type RuntimeConfig struct {
    Version       string `json:"version,omitempty"`
    If            string `json:"if,omitempty"`
    ActionRepo    string `json:"action-repo,omitempty"`
    ActionVersion string `json:"action-version,omitempty"`
}

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Original prompt

This section details on the original issue you should resolve

<issue_title>[plan] Expand RuntimeConfig and RuntimesConfig typed structs to cover all supported runtimes and fields</issue_title>
<issue_description>## Context

From schema consistency discussion #17876 (2026-02-23 run, findings 8–10).

Objective

Make the typed runtime structs in pkg/workflow/frontmatter_types.go complete so they match what the schema documents and what the raw map parsing already handles.

Issues to Fix

1. RuntimeConfig missing action-repo and action-version fields

Files: pkg/workflow/frontmatter_types.go:16-19, pkg/workflow/runtime_overrides.go:41-42

Both fields are in the schema, documented in docs/src/content/docs/reference/frontmatter.md:148-150, and read from the raw map in runtime_overrides.go:41-42.

They are absent from the typed struct RuntimeConfig, so any code path using RuntimesTyped silently drops them.

Add ActionRepo string \json:"action-repo,omitempty"`andActionVersion string `json:"action-version,omitempty"`toRuntimeConfig`.

2. RuntimesConfig and parseRuntimesConfig missing 5 runtimes

Files: pkg/workflow/frontmatter_types.go:16-29, 301-315, pkg/workflow/runtime_definitions.go

knownRuntimes defines 11 runtimes but RuntimesConfig only models 6 (node, python, go, uv, bun, deno).

Missing: dotnet, elixir, haskell, java, ruby — all documented in frontmatter.md:156-165.

Add fields for all 5 missing runtimes to RuntimesConfig and add corresponding case entries in parseRuntimesConfig.

3. rust Serena runtime silently generates no setup step

Files: pkg/workflow/runtime_detection.go, pkg/workflow/runtime_definitions.go, pkg/parser/schemas/main_workflow_schema.json:3318

rust is mapped as a Serena language but findRuntimeByID("rust") returns nil (not in knownRuntimes), silently skipping the setup step.

The schema lists "rust" as a valid Serena language, misleading users.

Either add rust to knownRuntimes with appropriate setup, or update the schema to note that rust does not generate a runtime setup step.

Files to Modify

pkg/workflow/frontmatter_types.go

pkg/workflow/runtime_definitions.go (if adding rust)

pkg/parser/schemas/main_workflow_schema.json (if updating Serena language note)

Acceptance Criteria

RuntimeConfig includes action-repo and action-version fields

RuntimesConfig includes dotnet, elixir, haskell, java, ruby fields

parseRuntimesConfig has case entries for all 5 missing runtimes

rust Serena language either generates a setup step or schema clarifies it does not

Run make agent-finish with no errors before committing

Generated by Plan Command for issue #discussion #17876

expires on Feb 25, 2026, 12:04 PM UTC

Comments on the Issue (you are @copilot in this section)

Fixes [plan] Expand RuntimeConfig and RuntimesConfig typed structs to cover all supported runtimes and fields #17905

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…runtimes and fields Co-authored-by: pelikhan <4175913+pelikhan@users.noreply.github.com>

github-actions · 2026-02-23T12:53:00Z

Commit pushed: da44b6a

github-actions · 2026-02-23T13:27:48Z

Hey @Copilot 👋 — great work on implementing the RuntimeConfig/RuntimesConfig expansion from issue #17905! The type-safety improvements look solid, and adding the missing runtime fields aligns perfectly with the schema. Here are a few things that would help get this across the finish line:

Remove the unrelated smoke test file — smoke-test-pr-push-22306576814.sh appears to be a test artifact that snuck into this PR. It's unrelated to the runtime config changes and should be removed to keep the PR focused.
Add test coverage — the changes to RuntimeConfig and RuntimesConfig structs and the parseRuntimesConfig function should have corresponding test cases. Tests should verify:
- New ActionRepo and ActionVersion fields are parsed correctly from config maps
- All 5 new runtime fields (Dotnet, Elixir, Haskell, Java, Ruby) are mapped properly in parseRuntimesConfig
- The schema updates for rust language clarification work as expected

If you'd like a hand, you can use this prompt to add the tests:

Add test coverage for the RuntimeConfig and RuntimesConfig changes in pkg/workflow/frontmatter_types.go.

Create or update pkg/workflow/frontmatter_types_test.go to include:

1. Test for RuntimeConfig with action-repo and action-version fields:
   - Parse a config map containing {"version": "20", "action-repo": "custom/setup", "action-version": "v5"}
   - Verify all fields are correctly populated in the RuntimeConfig struct

2. Test for all new runtime fields in RuntimesConfig:
   - Parse runtime configs for dotnet, elixir, haskell, java, and ruby
   - Verify each runtime is correctly assigned to its corresponding field in RuntimesConfig
   - Use table-driven test pattern following the existing test patterns in the codebase

3. Test for rust Serena language behavior:
   - Verify that rust is recognized as a valid Serena language identifier
   - Confirm it does not generate a runtime setup step (no knownRuntime entry)

Follow the testing patterns from scratchpad/testing.md and use assert for non-fatal checks, require for fatal ones.
Run make test to verify all tests pass.

Also, please remove the smoke-test-pr-push-22306576814.sh file from this PR as it's unrelated to the runtime config changes.

Generated by Contribution Check

Copilot

Pull request overview

This PR expands the RuntimeConfig and RuntimesConfig typed structs to ensure completeness with the schema and runtime definitions, addressing issues where certain fields and runtime types were being silently dropped during typed config parsing.

Changes:

Added ActionRepo and ActionVersion fields to RuntimeConfig struct for action override support
Added 5 missing runtime types to RuntimesConfig: Dotnet, Elixir, Haskell, Java, Ruby
Updated parseRuntimesConfig to extract and populate the new action override fields and handle all runtime types
Clarified in schema and code comments that rust is a valid Serena language but generates no setup step

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

File	Description
smoke-test-pr-push-22306576814.sh	Smoke test file for PR verification
pkg/workflow/runtime_detection.go	Updated comment to clarify that rust has no knownRuntime entry
pkg/workflow/frontmatter_types.go	Added ActionRepo/ActionVersion fields to RuntimeConfig; added 5 new runtime fields to RuntimesConfig; updated parseRuntimesConfig to handle all fields and runtimes
pkg/parser/schemas/main_workflow_schema.json	Added notes clarifying that rust does not generate a runtime setup step

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Copilot · 2026-02-23T15:24:29Z

pkg/workflow/frontmatter_types.go

+		case "dotnet":
+			config.Dotnet = runtimeConfig
+		case "elixir":
+			config.Elixir = runtimeConfig
+		case "haskell":
+			config.Haskell = runtimeConfig
+		case "java":
+			config.Java = runtimeConfig
+		case "ruby":
+			config.Ruby = runtimeConfig


The changes to parseRuntimesConfig correctly extract and populate the new ActionRepo and ActionVersion fields, and add support for the five new runtime types. However, the corresponding runtimesConfigToMap function (lines 699-785) also needs to be updated to:

Include action-repo and action-version fields when converting each runtime config back to a map

Add support for the five new runtime types: dotnet, elixir, haskell, java, ruby

Without these updates, the new fields and runtime types will be lost during round-trip conversion (parse → typed struct → map), breaking functionality that relies on ToMap() for serialization or backward compatibility.

Similarly, the countRuntimes helper function (lines 449-474) needs to include the five new runtime types in its count logic.

Initial plan

2c48c04

Copilot AI assigned Copilot and pelikhan Feb 23, 2026

Copilot started work on behalf of pelikhan February 23, 2026 12:22 View session

feat: expand RuntimeConfig and RuntimesConfig to cover all supported …

b25744a

…runtimes and fields Co-authored-by: pelikhan <4175913+pelikhan@users.noreply.github.com>

Copilot AI changed the title ~~[WIP] Expand RuntimeConfig and RuntimesConfig to include all fields~~ Expand RuntimeConfig and RuntimesConfig typed structs to cover all supported runtimes and fields Feb 23, 2026

Copilot finished work on behalf of pelikhan February 23, 2026 12:33

github-actions bot mentioned this pull request Feb 23, 2026

[agentics] No-Op Runs #17408

Open

test: Add smoke test file for run 22306576814

da44b6a

This was referenced Feb 23, 2026

Smoke Test: Claude - 22306576814 #17916

Closed

Smoke Test: Copilot - 22307539830 #17918

Closed

github-actions bot mentioned this pull request Feb 23, 2026

[Contribution Check Report] Contribution Check — 2026-02-23 #17919

Closed

pelikhan marked this pull request as ready for review February 23, 2026 15:19

Copilot AI review requested due to automatic review settings February 23, 2026 15:19

pelikhan merged commit 566df67 into main Feb 23, 2026
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pelikhan deleted the copilot/expand-runtime-config-structs branch February 23, 2026 15:19

Copilot started reviewing on behalf of pelikhan February 23, 2026 15:20 View session

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Expand RuntimeConfig and RuntimesConfig typed structs to cover all supported runtimes and fields#17911

Expand RuntimeConfig and RuntimesConfig typed structs to cover all supported runtimes and fields#17911
pelikhan merged 3 commits intomainfrom
copilot/expand-runtime-config-structs

Copilot AI commented Feb 23, 2026 •

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Objective

Issues to Fix

1. RuntimeConfig missing action-repo and action-version fields

2. RuntimesConfig and parseRuntimesConfig missing 5 runtimes

3. rust Serena runtime silently generates no setup step

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Copilot AI commented Feb 23, 2026 •

edited by github-actions bot

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1. `RuntimeConfig` missing `action-repo` and `action-version` fields

2. `RuntimesConfig` and `parseRuntimesConfig` missing 5 runtimes

3. `rust` Serena runtime silently generates no setup step