refactor(core): extract instance module from location services

packages/core/src/instance.ts

@@ -0,0 +1,133 @@
+import { Effect, Layer } from "effect"
+import { Agent } from "./agent.js"
+import { AISDK } from "./aisdk.js"
+import { Catalog } from "./catalog.js"
+import { Command } from "./command.js"
+import { Config } from "./config.js"
+import { LayerNode } from "@opencode-ai/util/effect/layer-node"
+import { Node } from "@opencode-ai/util/effect/app-node"
+import { FileMutation } from "./file-mutation.js"
+import { Environment } from "./environment/index.js"
+import { Formatter } from "./formatter.js"
+import { FileSystem } from "./filesystem.js"
+import { FileSystemSearch } from "./filesystem/search.js"
+import { Generate } from "./generate.js"
+import { Form } from "./form.js"
+import { Image } from "./image.js"
+import { LocationWatcher } from "./filesystem/location-watcher.js"
+import { Integration } from "./integration.js"
+import { Location } from "./location.js"
+import { LocationMutation } from "./location-mutation.js"
+import { ModelResolver } from "./model-resolver.js"
+import { MCP } from "./mcp/index.js"
+import { Permission } from "./permission.js"
+import { Plugin } from "./plugin.js"
+import { PluginHooks } from "./plugin/hooks.js"
+import { PluginSupervisor } from "./plugin/supervisor.js"
+import { Worktree } from "./worktree.js"
+import { Pty } from "./pty.js"
+import { Shell } from "./shell.js"
+import { ShellSelect } from "./shell/select.js"
+import { Reference } from "./reference.js"
+import { WebSearch } from "./websearch.js"
+import { ReferenceInstructions } from "./reference/instructions.js"
+import { SessionRunnerLLM } from "./session/runner/llm.js"
+import { SessionRunnerModel } from "./session/runner/model.js"
+import { SessionModelTransport } from "./session/model-transport.js"
+import { SessionCompaction } from "./session/compaction.js"
+import { SessionTitle } from "./session/title.js"
+import { Skill } from "./skill.js"
+import { SkillInstructions } from "./skill/instructions.js"
+import { Snapshot } from "./snapshot.js"
+import { InstructionDiscovery } from "./instruction-discovery.js"
+import { InstructionBuiltIns } from "./instructions/builtins.js"
+import { InstructionEntry } from "./session/instruction-entry.js"
+import { SessionInstructions } from "./session/instructions.js"
+import { SessionGenerateNode } from "./session/generate-node.js"
+import { McpTool } from "./tool/mcp.js"
+import { ReadToolFileSystem } from "./tool/read-filesystem.js"
+import { Tool } from "./tool.js"
+import { ToolOutput } from "./tool-output.js"
+import { Vcs } from "./vcs.js"
+
+export * as Instance from "./instance.js"
+
+const nodes = [
+  Location.node,
+  Environment.node,
+  Config.node,
+  Agent.node,
+  Command.node,
+  Reference.node,
+  WebSearch.node,
+  Integration.node,
+  Catalog.node,
+  ModelResolver.node,
+  AISDK.node,
+  Plugin.node,
+  PluginHooks.node,
+  PluginSupervisor.node,
+  Worktree.refreshNode,
+  FileSystemSearch.node,
+  FileSystem.node,
+  ShellSelect.node,
+  Pty.node,
+  Shell.node,
+  Skill.node,
+  InstructionBuiltIns.node,
+  InstructionDiscovery.node,
+  LocationMutation.node,
+  FileMutation.node,
+  Formatter.node,
+  MCP.node,
+  Permission.node,
+  Tool.node,
+  ToolOutput.node,
+  Image.node,
+  SkillInstructions.node,
+  ReferenceInstructions.node,
+  InstructionEntry.node,
+  Form.node,
+  Generate.node,
+  SessionGenerateNode.node,
+  ReadToolFileSystem.node,
+  McpTool.node,
+  SessionInstructions.node,
+  SessionRunnerModel.node,
+  SessionModelTransport.node,
+  SessionCompaction.node,
+  SessionTitle.node,
+  Snapshot.node,
+  SessionRunnerLLM.node,
+  Vcs.node,
+  // Start repository watches only after boot-critical filesystem and Git work.
+  LocationWatcher.node,
+] as const satisfies readonly Node.LocationNode<unknown, unknown>[]
+
+export const graph = LayerNode.group<typeof nodes>(nodes)
+
+export type Services = LayerNode.Output<typeof graph>
+export type Error = LayerNode.Error<typeof graph>
+
+// One instance is one compiled, fresh copy of the graph standing on a directory.
+export function layer(ref: Location.Ref, replacements: LayerNode.Replacements = []) {
+  const startedAt = performance.now()
+  const allReplacements = replacements.concat([[Location.node, Location.boundNode(ref)]])
+  // Apply replacements during hoist, not afterward: replacements can
+  // introduce new tagged dependencies (Location.boundNode depends on
+  // Project), and the hoist walk is the only pass that can still slice
+  // those back out.
+  const location = LayerNode.hoist(graph, Node.tags.values.global, allReplacements)
+
+  return LayerNode.compile(location.node).pipe(
+    Layer.fresh,
+    Layer.tap(() =>
+      Effect.logInfo("location services booted", {
+        directory: ref.directory,
+        workspaceID: ref.workspaceID,
+        durationMs: Math.round(performance.now() - startedAt),
+      }),
+    ),
+    Layer.provide(LayerNode.compile(location.hoisted)),
+  )
+}

packages/core/src/location-service-map.ts

@@ -2,11 +2,11 @@ import { Context, Effect, Layer, LayerMap } from "effect"
 import { LayerNode } from "@opencode-ai/util/effect/layer-node"
 import { Node } from "@opencode-ai/util/effect/app-node"
 import { Location } from "./location.js"
-import type { LocationError, LocationServices } from "./location-services.js"
+import type { Instance } from "./instance.js"
 
 export class Service extends Context.Service<
   Service,
-  LayerMap.LayerMap<Location.Ref, LocationServices, LocationError>
+  LayerMap.LayerMap<Location.Ref, Instance.Services, Instance.Error>
 >()("@opencode/example/LocationServiceMap") {
   static get(ref: Location.Ref) {
     return Layer.unwrap(Effect.map(Service, (locations) => locations.get(ref)))

packages/core/src/location-services.ts

@@ -1,118 +1,16 @@
 import { Duration, Effect, Layer, LayerMap } from "effect"
 import { existsSync } from "fs"
 import path from "path"
-import { Agent } from "./agent.js"
-import { AISDK } from "./aisdk.js"
-import { Catalog } from "./catalog.js"
-import { Command } from "./command.js"
-import { Config } from "./config.js"
 import { LayerNode } from "@opencode-ai/util/effect/layer-node"
-import { Node } from "@opencode-ai/util/effect/app-node"
-import { Bus } from "./bus.js"
-import { FileMutation } from "./file-mutation.js"
-import { Environment } from "./environment/index.js"
-import { Formatter } from "./formatter.js"
-import { FileSystem } from "./filesystem.js"
-import { FileSystemSearch } from "./filesystem/search.js"
-import { Generate } from "./generate.js"
-import { Form } from "./form.js"
-import { Image } from "./image.js"
-import { LocationWatcher } from "./filesystem/location-watcher.js"
-import { Integration } from "./integration.js"
+import { Instance } from "./instance.js"
 import { Location } from "./location.js"
-import { LocationMutation } from "./location-mutation.js"
 import { LocationServiceMap } from "./location-service-map.js"
-import { ModelResolver } from "./model-resolver.js"
-import { MCP } from "./mcp/index.js"
-import { Permission } from "./permission.js"
-import { Plugin } from "./plugin.js"
-import { PluginHooks } from "./plugin/hooks.js"
-import { PluginSupervisor } from "./plugin/supervisor.js"
-import { Worktree } from "./worktree.js"
-import { Pty } from "./pty.js"
-import { Shell } from "./shell.js"
-import { ShellSelect } from "./shell/select.js"
-import { Reference } from "./reference.js"
-import { WebSearch } from "./websearch.js"
-import { ReferenceInstructions } from "./reference/instructions.js"
-import { SessionRunnerLLM } from "./session/runner/llm.js"
-import { SessionRunnerModel } from "./session/runner/model.js"
-import { SessionModelTransport } from "./session/model-transport.js"
-import { SessionCompaction } from "./session/compaction.js"
-import { SessionTitle } from "./session/title.js"
-import { Skill } from "./skill.js"
-import { SkillInstructions } from "./skill/instructions.js"
-import { Snapshot } from "./snapshot.js"
-import { InstructionDiscovery } from "./instruction-discovery.js"
-import { InstructionBuiltIns } from "./instructions/builtins.js"
-import { InstructionEntry } from "./session/instruction-entry.js"
-import { SessionInstructions } from "./session/instructions.js"
-import { SessionGenerateNode } from "./session/generate-node.js"
-import { McpTool } from "./tool/mcp.js"
-import { ReadToolFileSystem } from "./tool/read-filesystem.js"
-import { Tool } from "./tool.js"
-import { ToolOutput } from "./tool-output.js"
-import { Vcs } from "./vcs.js"
 import { AbsolutePath } from "./schema.js"
 
 export { LocationServiceMap } from "./location-service-map.js"
 
-const locationServiceNodes = [
-  Location.node,
-  Environment.node,
-  Config.node,
-  Agent.node,
-  Command.node,
-  Reference.node,
-  WebSearch.node,
-  Integration.node,
-  Catalog.node,
-  ModelResolver.node,
-  AISDK.node,
-  Plugin.node,
-  PluginHooks.node,
-  PluginSupervisor.node,
-  Worktree.refreshNode,
-  FileSystemSearch.node,
-  FileSystem.node,
-  ShellSelect.node,
-  Pty.node,
-  Shell.node,
-  Skill.node,
-  InstructionBuiltIns.node,
-  InstructionDiscovery.node,
-  LocationMutation.node,
-  FileMutation.node,
-  Formatter.node,
-  MCP.node,
-  Permission.node,
-  Tool.node,
-  ToolOutput.node,
-  Image.node,
-  SkillInstructions.node,
-  ReferenceInstructions.node,
-  InstructionEntry.node,
-  Form.node,
-  Generate.node,
-  SessionGenerateNode.node,
-  ReadToolFileSystem.node,
-  McpTool.node,
-  SessionInstructions.node,
-  SessionRunnerModel.node,
-  SessionModelTransport.node,
-  SessionCompaction.node,
-  SessionTitle.node,
-  Snapshot.node,
-  SessionRunnerLLM.node,
-  Vcs.node,
-  // Start repository watches only after boot-critical filesystem and Git work.
-  LocationWatcher.node,
-] as const satisfies readonly Node.LocationNode<unknown, unknown>[]
-
-export const locationServices = LayerNode.group<typeof locationServiceNodes>(locationServiceNodes)
-
-export type LocationServices = LayerNode.Output<typeof locationServices>
-export type LocationError = LayerNode.Error<typeof locationServices>
+export type LocationServices = Instance.Services
+export type LocationError = Instance.Error
 
 export function buildLocationServiceMap(
   replacements: LayerNode.Replacements = [],
@@ -127,37 +25,14 @@ export function buildLocationServiceMap(
   return Layer.effect(
     LocationServiceMap.Service,
     Effect.map(
-      LayerMap.make(
-        (ref: Location.Ref) => {
-          const startedAt = performance.now()
-          const allReplacements = replacements.concat([[Location.node, Location.boundNode(ref)]])
-          // Apply replacements during hoist, not afterward: replacements can
-          // introduce new tagged dependencies (Location.boundNode depends on
-          // Project), and the hoist walk is the only pass that can still slice
-          // those back out.
-          const location = LayerNode.hoist(locationServices, Node.tags.values.global, allReplacements)
-
-          return LayerNode.compile(location.node).pipe(
-            Layer.fresh,
-            Layer.tap(() =>
-              Effect.logInfo("location services booted", {
-                directory: ref.directory,
-                workspaceID: ref.workspaceID,
-                durationMs: Math.round(performance.now() - startedAt),
-              }),
-            ),
-            Layer.provide(LayerNode.compile(location.hoisted)),
-          )
-        },
-        {
-          // Workspace-placed directories exist only inside the workspace, so a
-          // local stat consults the wrong filesystem. Workspace liveness is
-          // owned by placement; do not probe the sandbox here, which would
-          // provision lazily-idle workspaces.
-          idleTimeToLive: (ref) =>
-            ref.workspaceID !== undefined || existsSync(ref.directory) ? Duration.infinity : Duration.zero,
-        },
-      ),
+      LayerMap.make((ref: Location.Ref) => Instance.layer(ref, replacements), {
+        // Workspace-placed directories exist only inside the workspace, so a
+        // local stat consults the wrong filesystem. Workspace liveness is
+        // owned by placement; do not probe the sandbox here, which would
+        // provision lazily-idle workspaces.
+        idleTimeToLive: (ref) =>
+          ref.workspaceID !== undefined || existsSync(ref.directory) ? Duration.infinity : Duration.zero,
+      }),
       (inner) => ({
         ...inner,
         get: (ref: Location.Ref) => inner.get(canonical(ref)),