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refactor(session): make SystemPrompt a proper Effect Service (#21992)

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This commit is contained in:
Kit Langton
2026-04-11 12:52:35 -04:00
committed by GitHub
parent 5ee7edaf9e
commit ccb0b320e1
5 changed files with 72 additions and 49 deletions
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82
packages/opencode/src/session/system.ts
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@@ -1,4 +1,4 @@
import { Ripgrep } from "../file/ripgrep"
import { Context, Effect, Layer } from "effect"
import { Instance } from "../project/instance"
@@ -33,44 +33,52 @@ export namespace SystemPrompt {
return [PROMPT_DEFAULT]
}
export async function environment(model: Provider.Model) {
const project = Instance.project
return [
[
`You are powered by the model named ${model.api.id}. The exact model ID is ${model.providerID}/${model.api.id}`,
`Here is some useful information about the environment you are running in:`,
`<env>`,
` Working directory: ${Instance.directory}`,
` Workspace root folder: ${Instance.worktree}`,
` Is directory a git repo: ${project.vcs === "git" ? "yes" : "no"}`,
` Platform: ${process.platform}`,
` Today's date: ${new Date().toDateString()}`,
`</env>`,
`<directories>`,
` ${
project.vcs === "git" && false
? await Ripgrep.tree({
cwd: Instance.directory,
limit: 50,
})
: ""
}`,
`</directories>`,
].join("\n"),
]
export interface Interface {
readonly environment: (model: Provider.Model) => string[]
readonly skills: (agent: Agent.Info) => Effect.Effect<string | undefined>
}
export async function skills(agent: Agent.Info) {
if (Permission.disabled(["skill"], agent.permission).has("skill")) return
export class Service extends Context.Service<Service, Interface>()("@opencode/SystemPrompt") {}
const list = await Skill.available(agent)
export const layer = Layer.effect(
Service,
Effect.gen(function* () {
const skill = yield* Skill.Service
return [
"Skills provide specialized instructions and workflows for specific tasks.",
"Use the skill tool to load a skill when a task matches its description.",
// the agents seem to ingest the information about skills a bit better if we present a more verbose
// version of them here and a less verbose version in tool description, rather than vice versa.
Skill.fmt(list, { verbose: true }),
].join("\n")
}
return Service.of({
environment(model) {
const project = Instance.project
return [
[
`You are powered by the model named ${model.api.id}. The exact model ID is ${model.providerID}/${model.api.id}`,
`Here is some useful information about the environment you are running in:`,
`<env>`,
` Working directory: ${Instance.directory}`,
` Workspace root folder: ${Instance.worktree}`,
` Is directory a git repo: ${project.vcs === "git" ? "yes" : "no"}`,
` Platform: ${process.platform}`,
` Today's date: ${new Date().toDateString()}`,
`</env>`,
].join("\n"),
]
},
skills: Effect.fn("SystemPrompt.skills")(function* (agent: Agent.Info) {
if (Permission.disabled(["skill"], agent.permission).has("skill")) return
const list = yield* skill.available(agent)
return [
"Skills provide specialized instructions and workflows for specific tasks.",
"Use the skill tool to load a skill when a task matches its description.",
// the agents seem to ingest the information about skills a bit better if we present a more verbose
// version of them here and a less verbose version in tool description, rather than vice versa.
Skill.fmt(list, { verbose: true }),
].join("\n")
}),
})
}),
)
export const defaultLayer = layer.pipe(Layer.provide(Skill.defaultLayer))
}