fix(claude): retain configured model metadata before a turn

Rebuilding an idle session cleared its observed model and published null despite retaining an explicit model in its configuration. Fall back to that configuration until the next turn supplies an observed model.

.github/workflows/desktop-release.yml

@@ -135,32 +135,6 @@ jobs:
         env:
           NODE_AUTH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
-      # Backport electron-builder#10172 to the pinned build tool only.
-      # Remove this step when app-builder-lib is upgraded to a release containing it.
-      - name: Repair temporary keychain password in signing tool
-        shell: bash
-        run: |
-          node <<'KEYCHAIN_FIX'
-          const fs = require('node:fs');
-          const path = require('node:path');
-          const manifestPath = require.resolve('app-builder-lib/package.json');
-          if (JSON.parse(fs.readFileSync(manifestPath, 'utf8')).version !== '26.8.1') {
-            throw new Error('Reassess/remove the signing backport for the new app-builder-lib version');
-          }
-          const sourcePath = path.join(path.dirname(manifestPath), 'out/codeSign/macCodeSign.js');
-          let source = fs.readFileSync(sourcePath, 'utf8');
-          const replacements = [
-            ['importCerts(keychainFile, certPaths, cscPasswords)', 'importCerts(keychainFile, certPaths, cscPasswords, keychainPassword)'],
-            ['importCerts(keychainFile, paths, keyPasswords)', 'importCerts(keychainFile, paths, keyPasswords, keychainPassword)'],
-            ['["set-key-partition-list", "-S", "apple-tool:,apple:", "-s", "-k", password, keychainFile]', '["set-key-partition-list", "-S", "apple-tool:,apple:", "-s", "-k", keychainPassword, keychainFile]'],
-          ];
-          for (const [before, after] of replacements) {
-            if (source.split(before).length !== 2) throw new Error('Unexpected signing tool source; refusing to patch');
-            source = source.replace(before, after);
-          }
-          fs.writeFileSync(sourcePath, source);
-          KEYCHAIN_FIX
-
       - name: Set desktop package version from tag
         shell: bash
         run: |

docs/connected-hosts.md

@@ -74,7 +74,10 @@ registrations remain inspectable; a changed destination requires explicit identi
 
 Both daemons advertise `connectedHosts`; the shared link additionally requires `hostMultiplexing`.
 A completes capability and pinned-identity checks on each physical recovery before admitting channels. There is no local fallback. An older daemon continues to serve existing local
-operations; requesting this feature gives update guidance.
+operations; requesting this feature gives update guidance. The registry retries an older destination
+with capped backoff, so it comes online once updated. Self, duplicate, changed-identity, and
+authentication failures stay in `error` until an update changes the connection, `enabled`, or
+`replaceIdentity`, or A restarts.
 
 Disposing a routed API releases its observations and session. It does not remove the saved host or
 affect sibling API scopes. Disposing the origin cascades to its derived scopes. Observations restore

nix/desktop-package.nix

@@ -127,7 +127,7 @@ buildNpmPackage {
         # The Nix output is not a distributable DMG, so leave it unsigned and
         # disable the hardened runtime that requires a matching signature.
         CSC_IDENTITY_AUTO_DISCOVERY=false \
-          ../../node_modules/.bin/electron-builder \
+          npm exec --offline -- electron-builder \
             --config electron-builder.yml \
             --dir \
             --mac \

nix/npm-deps.hash

@@ -1 +1 @@
-sha256-CeT2PtYIAFwvBC9LIku8VkTl0pvKxYzSCn0QW2ManfU=
+sha256-KN/AVZV/o0TleLLpmggSrdJqjFDJ/NJYVHiC54xb4jQ=

packages/app/src/terminal/runtime/terminal-emulator-runtime.browser.test.ts

@@ -717,11 +717,13 @@ describe("terminal emulator runtime in a real browser", () => {
     { name: "DA1-zero", bytes: "\x1b[0c" },
     { name: "DA2", bytes: "\x1b[>c" },
     { name: "DA3", bytes: "\x1b[=c" },
+    { name: "XTVERSION", bytes: "\x1b[>q" },
     { name: "DSR-5", bytes: "\x1b[5n" },
     { name: "DSR-6", bytes: "\x1b[6n" },
     { name: "DSR-?6", bytes: "\x1b[?6n" },
     { name: "DECRQM", bytes: "\x1b[1$p" },
     { name: "DECRQM-?", bytes: "\x1b[?1$p" },
+    { name: "DECRQSS", bytes: "\x1bP$qm\x1b\\" },
     { name: "OSC-10-foreground-color", bytes: "\x1b]10;?\x07" },
     { name: "OSC-11-background-color", bytes: "\x1b]11;?\x07" },
     { name: "OSC-12-cursor-color", bytes: "\x1b]12;?\x07" },

packages/app/src/terminal/runtime/terminal-emulator-runtime.ts

@@ -647,6 +647,7 @@ export class TerminalEmulatorRuntime {
       terminal.parser.registerCsiHandler({ final: "c" }, () => true);
       terminal.parser.registerCsiHandler({ prefix: ">", final: "c" }, () => true);
       terminal.parser.registerCsiHandler({ prefix: "=", final: "c" }, () => true);
+      terminal.parser.registerCsiHandler({ prefix: ">", final: "q" }, () => true);
       terminal.parser.registerCsiHandler({ final: "n" }, () => true);
       terminal.parser.registerCsiHandler({ prefix: "?", final: "n" }, () => true);
       terminal.parser.registerCsiHandler({ final: "R" }, () => true);
@@ -655,6 +656,7 @@ export class TerminalEmulatorRuntime {
         { prefix: "?", intermediates: "$", final: "p" },
         () => true,
       );
+      terminal.parser.registerDcsHandler({ intermediates: "$", final: "q" }, () => true);
       for (const code of [10, 11, 12]) {
         terminal.parser.registerOscHandler(code, (data) => data.trim() === "?");
       }

packages/client/src/node/index.ts

@@ -204,15 +204,16 @@ export function createHostTransportFactory(
 }
 export function createHostClient(
   connection: string,
-  config: Omit<DaemonClientConfig, "url" | "transportFactory"> & HostTransportOptions,
+  config: Omit<DaemonClientConfig, "url"> & HostTransportOptions,
   budget?: HostTransportBudget,
 ): DaemonClient {
   const target = parseHostTarget(connection);
-  const { webSocketAgent, ...clientConfig } = config;
+  const { webSocketAgent, transportFactory, ...clientConfig } = config;
   return new DaemonClient({
     ...clientConfig,
     url: "ws://host-connector/ws",
     ...(target.password ? { password: target.password } : {}),
-    transportFactory: createHostTransportFactory(connection, budget, { webSocketAgent }),
+    transportFactory:
+      transportFactory ?? createHostTransportFactory(connection, budget, { webSocketAgent }),
   });
 }

packages/desktop/package.json

@@ -41,7 +41,7 @@
     "@types/node": "24.6.0",
     "@types/ws": "^8.5.14",
     "electron": "44.2.0",
-    "electron-builder": "26.8.1",
+    "electron-builder": "26.18.0",
     "typescript": "5.9.3",
     "unzip-crx-3": "^0.2.0",
     "vitest": "^4.1.6",

packages/server/src/server/agent/providers/claude/agent.runtime-info.test.ts

@@ -0,0 +1,48 @@
+import pino from "pino";
+import { describe, expect, test } from "vitest";
+
+import { ClaudeAgentClient } from "./agent.js";
+
+describe("Claude runtime info before a turn", () => {
+  const client = new ClaudeAgentClient({ logger: pino({ level: "silent" }) });
+
+  test("reports the explicitly configured model before the first turn", async () => {
+    const session = await client.createSession({
+      provider: "claude",
+      cwd: process.cwd(),
+      model: "claude-haiku-5-5",
+    });
+    try {
+      expect(await session.getRuntimeInfo()).toMatchObject({ model: "claude-haiku-5-5" });
+    } finally {
+      await session.close();
+    }
+  });
+
+  test("reports the persisted configured model after rebuilding an idle session", async () => {
+    const session = await client.resumeSession({
+      provider: "claude",
+      sessionId: "runtime-model-before-turn",
+      metadata: { cwd: process.cwd(), model: "claude-haiku-5-5" },
+    });
+    try {
+      expect(await session.getRuntimeInfo()).toMatchObject({
+        sessionId: "runtime-model-before-turn",
+        model: "claude-haiku-5-5",
+      });
+      expect((await session.getRuntimeInfo()).model).toBe("claude-haiku-5-5");
+      expect((await session.getRuntimeInfo()).extra?.runtimeModel).toBeUndefined();
+    } finally {
+      await session.close();
+    }
+  });
+
+  test("leaves the model unknown when Claude will choose its default", async () => {
+    const session = await client.createSession({ provider: "claude", cwd: process.cwd() });
+    try {
+      expect((await session.getRuntimeInfo()).model).toBeNull();
+    } finally {
+      await session.close();
+    }
+  });
+});

packages/server/src/server/agent/providers/claude/agent.ts

@@ -2460,7 +2460,7 @@ class ClaudeAgentSession implements AgentSession {
     const info: AgentRuntimeInfo = {
       provider: "claude",
       sessionId: this.claudeSessionId,
-      model: this.lastOptionsModel,
+      model: this.lastOptionsModel ?? this.config.model ?? null,
       modeId: this.currentMode ?? null,
       ...(this.lastRuntimeModel
         ? {

packages/server/src/server/connected-hosts/hosts.e2e.test.ts

@@ -784,6 +784,211 @@ test("old capabilities fail before execution and authentication errors recover t
   expect((await online(paseo)).hosts[0]!.serverId).toBe(b.daemon.getServerId());
 });
 
+async function updatableDestination() {
+  let features: { connectedHosts: boolean; hostMultiplexing: boolean } | undefined;
+  let holding = false;
+  const held: (() => void)[] = [];
+  let connections = 0;
+  const http = createServer();
+  const ws = new WebSocketServer({ server: http });
+  ws.on("connection", (socket) => {
+    connections++;
+    socket.on("message", (data) => {
+      const frame = JSON.parse(data.toString());
+      if (frame.type === "ping") socket.send(JSON.stringify({ type: "pong" }));
+      if (frame.type !== "hello") return;
+      const reply = () =>
+        socket.send(
+          JSON.stringify({
+            type: "session",
+            message: {
+              type: "status",
+              payload: {
+                status: "server_info",
+                serverId: "srv_updated",
+                hostname: "updated",
+                version: "0.12.0",
+                ...(features ? { features } : {}),
+              },
+            },
+          }),
+        );
+      if (holding) held.push(reply);
+      else reply();
+    });
+  });
+  http.listen(0, "127.0.0.1");
+  await once(http, "listening");
+  cleanup.push(async () => {
+    for (const socket of ws.clients) socket.terminate();
+    await new Promise<void>((resolve) => ws.close(() => resolve()));
+    await new Promise<void>((resolve) => http.close(() => resolve()));
+  });
+  const address = http.address();
+  if (!address || typeof address === "string") throw new Error("Missing destination port");
+  return {
+    port: address.port,
+    connections: () => connections,
+    hold: () => {
+      holding = true;
+    },
+    update: () => {
+      features = { connectedHosts: true, hostMultiplexing: true };
+      holding = false;
+      for (const reply of held.splice(0)) reply();
+    },
+  };
+}
+async function capabilityRetry(paseo: ReturnType<typeof createPaseoApi>): Promise<number> {
+  let retryAt = "";
+  await expect
+    .poll(
+      async () => {
+        const row = (await paseo.hosts.list()).hosts[0];
+        retryAt = row?.nextRetryAt ?? "";
+        return row;
+      },
+      { timeout: 5000 },
+    )
+    .toMatchObject({
+      status: "offline",
+      nextRetryAt: expect.any(String),
+      error: { code: "unsupported_capability" },
+    });
+  return Date.parse(retryAt);
+}
+
+test("a destination updated past unsupported_capability keeps its guidance while retrying and comes online, while duplicate_host stays terminal", async () => {
+  const destination = await updatableDestination();
+  const a = await daemon();
+  const { paseo } = await api(a);
+  const host = await paseo.hosts.add({ connection: `127.0.0.1:${destination.port}` });
+  await capabilityRetry(paseo);
+  destination.hold();
+  await expect
+    .poll(async () => (await paseo.hosts.list()).hosts[0], { timeout: 5000 })
+    .toMatchObject({ status: "connecting", error: { code: "unsupported_capability" } });
+  await expect(paseo.hosts.client("srv_updated")).rejects.toMatchObject({
+    code: "unsupported_capability",
+  });
+  destination.update();
+  expect((await online(paseo)).hosts[0]).toMatchObject({
+    registrationId: host.registrationId,
+    serverId: "srv_updated",
+    nextRetryAt: null,
+    error: null,
+  });
+  await paseo.hosts.add({ connection: `ws://127.0.0.1:${destination.port}/ws` });
+  await expect
+    .poll(async () => (await paseo.hosts.list()).hosts[1], { timeout: 5000 })
+    .toMatchObject({ status: "error", nextRetryAt: null, error: { code: "duplicate_host" } });
+});
+
+test("disabling or removing a host cancels its pending capability retry", async () => {
+  const destination = await updatableDestination();
+  const a = await daemon();
+  const { paseo } = await api(a);
+  const host = await paseo.hosts.add({ connection: `127.0.0.1:${destination.port}` });
+  let retryAt = await capabilityRetry(paseo);
+  let connections = destination.connections();
+  await paseo.hosts.update(host.registrationId, { enabled: false });
+  await new Promise((resolve) => setTimeout(resolve, retryAt - Date.now() + 500));
+  expect(destination.connections()).toBe(connections);
+  await paseo.hosts.update(host.registrationId, { enabled: true });
+  retryAt = await capabilityRetry(paseo);
+  connections = destination.connections();
+  await paseo.hosts.remove(host.registrationId);
+  await new Promise((resolve) => setTimeout(resolve, retryAt - Date.now() + 500));
+  expect(destination.connections()).toBe(connections);
+});
+
+import {
+  createDaemonChannel,
+  exportPublicKey,
+  generateKeyPair,
+  openDaemonSecureChannel,
+  type Transport,
+} from "@getpaseo/relay/e2ee";
+test("a capability retry over a relay keeps the protected endpoint security it negotiated", async () => {
+  const keys = generateKeyPair();
+  const legacyReceived: unknown[] = [];
+  let connections = 0;
+  let retryClosed = false;
+  const http = createServer();
+  const ws = new WebSocketServer({ server: http });
+  ws.on("connection", (socket) => {
+    connections++;
+    const wire: Transport = {
+      send: (data) => socket.send(data),
+      close: (code, reason) => socket.close(code, reason),
+      onmessage: null,
+      onclose: null,
+      onerror: null,
+    };
+    socket.on("message", (data, isBinary) => {
+      const bytes = Buffer.from(data as Buffer);
+      wire.onmessage?.({
+        data: isBinary
+          ? bytes.buffer.slice(bytes.byteOffset, bytes.byteOffset + bytes.byteLength)
+          : bytes.toString(),
+        isBinary,
+      });
+    });
+    socket.on("close", (code, reason) => wire.onclose?.(code, reason.toString()));
+    if (connections > 1) {
+      socket.on("close", () => {
+        retryClosed = true;
+      });
+      void createDaemonChannel(wire, keys, {
+        onmessage: (data) => legacyReceived.push(data),
+      }).catch(() => {});
+      return;
+    }
+    const channel = openDaemonSecureChannel(wire, {
+      daemonKeyPair: keys,
+      events: {
+        onmessage: (data) => {
+          if (typeof data !== "string" || JSON.parse(data).type !== "hello") return;
+          void channel.then((secure) =>
+            secure.send(
+              JSON.stringify({
+                type: "session",
+                message: {
+                  type: "status",
+                  payload: {
+                    status: "server_info",
+                    serverId: "srv_relayed",
+                    hostname: "relayed",
+                    version: "0.12.0",
+                  },
+                },
+              }),
+            ),
+          );
+        },
+      },
+    });
+    void channel.catch(() => {});
+  });
+  http.listen(0, "127.0.0.1");
+  await once(http, "listening");
+  cleanup.push(async () => {
+    for (const socket of ws.clients) socket.terminate();
+    await new Promise<void>((resolve) => ws.close(() => resolve()));
+    await new Promise<void>((resolve) => http.close(() => resolve()));
+  });
+  const address = http.address();
+  if (!address || typeof address === "string") throw new Error("Missing relay port");
+  const a = await daemon();
+  const { paseo } = await api(a);
+  await paseo.hosts.add({
+    connection: `relay://127.0.0.1:${address.port}/srv_relayed?key=${encodeURIComponent(exportPublicKey(keys.publicKey))}`,
+  });
+  await capabilityRetry(paseo);
+  await expect.poll(() => retryClosed, { timeout: 15000 }).toBe(true);
+  expect(legacyReceived).toEqual([]);
+});
+
 test("an unreachable saved target becomes online after its daemon starts without being added again", async () => {
   const reservation = createServer();
   reservation.listen(0, "127.0.0.1");

packages/server/src/server/connected-hosts/index.ts

@@ -7,10 +7,12 @@ import { z } from "zod";
 import {
   createHostClient,
   createHostChannelTransport,
+  createHostTransportFactory,
   parseHostTarget,
   HostTransportBudget,
 } from "@getpaseo/client/node";
 import type { DaemonClient } from "@getpaseo/client/internal/daemon-client";
+import type { DaemonTransportFactory } from "@getpaseo/client/internal/daemon-client-transport-types";
 import {
   HostSummarySchema,
   HostAddSchema,
@@ -235,23 +237,30 @@ export class ConnectedHosts {
       if (route.registrationId === id)
         route.close(code, "Host access was disabled, replaced or removed");
   }
-  private start(row: Saved): void {
+  private start(
+    row: Saved,
+    resume?: { failures: number; transports: DaemonTransportFactory },
+  ): void {
     if (!row.enabled || this.closed) return;
-    let stopped = false;
-    const client = createHostClient(
-      row.connection,
-      {
-        clientId: `host-link-${this.self.serverId}-${row.registrationId}`,
-        connectTimeoutMs: 10000,
+    const transports =
+      resume?.transports ??
+      createHostTransportFactory(row.connection, this.budget, {
         webSocketAgent: webSocketProxyAgent,
-      },
-      this.budget,
-    );
+      });
+    let stopped = false;
+    let attempts = resume?.failures ?? 0;
+    let retry: ReturnType<typeof setTimeout> | undefined;
+    const client = createHostClient(row.connection, {
+      clientId: `host-link-${this.self.serverId}-${row.registrationId}`,
+      connectTimeoutMs: 10000,
+      transportFactory: transports,
+    });
     const live: Live = {
       client,
       accepted: false,
       stop: () => {
         stopped = true;
+        clearTimeout(retry);
         void client.close();
       },
     };
@@ -285,7 +294,7 @@ export class ConnectedHosts {
         if (info.features?.connectedHosts !== true || info.features?.hostMultiplexing !== true)
           throw new HostError(
             "unsupported_capability",
-            "Update the destination daemon to use connected hosts.",
+            "Update the destination daemon to use connected hosts; retrying automatically.",
           );
         // Pin and persist under the same writer as management to prevent discovery races.
         await this.mutate(async () => {
@@ -304,16 +313,22 @@ export class ConnectedHosts {
           if (stopped || client.getLastServerInfoMessage() !== info || !client.isConnected) return;
           Object.assign(row, next);
           live.accepted = true;
+          attempts = 0;
           this.changed();
         });
       } catch (error) {
         if (stopped) return;
-        row.status = "error";
         row.error = connectionFailure(error, client.authFailureReason !== null) ?? {
           code: "host_offline",
           message: "Host connection failed",
         };
-        row.nextRetryAt = null;
+        if (terminalFailures.has(row.error.code)) {
+          row.status = "error";
+          row.nextRetryAt = null;
+        } else {
+          stopped = true;
+          retry = this.scheduleAcceptanceRetry(row, attempts, transports);
+        }
         this.changed();
         await client.close();
       }
@@ -329,18 +344,17 @@ export class ConnectedHosts {
         if (route.registrationId === row.registrationId) route.close();
       row.status = state.status === "connecting" ? "connecting" : "offline";
       row.nextRetryAt = state.status === "disconnected" ? (state.nextRetryAt ?? null) : null;
-      row.error =
-        state.status === "disconnected"
-          ? (connectionFailure(
-              Object.assign(new Error("Check the SSH configuration and daemon credentials"), {
-                code: state.failureCode,
-              }),
-              client.authFailureReason !== null,
-            ) ?? {
-              code: "host_offline",
-              message: "Cannot reach host. Check the connection; retrying automatically.",
-            })
-          : null;
+      if (state.status === "disconnected")
+        row.error = connectionFailure(
+          Object.assign(new Error("Check the SSH configuration and daemon credentials"), {
+            code: state.failureCode,
+          }),
+          client.authFailureReason !== null,
+        ) ?? {
+          code: "host_offline",
+          message: "Cannot reach host. Check the connection; retrying automatically.",
+        };
+      else if (row.error?.code !== "unsupported_capability") row.error = null;
       if (row.error?.code === "authentication_failed") {
         row.status = "error";
         row.nextRetryAt = null;
@@ -351,6 +365,18 @@ export class ConnectedHosts {
     });
     void client.connect().catch(() => {});
   }
+  private scheduleAcceptanceRetry(
+    row: Saved,
+    failures: number,
+    transports: DaemonTransportFactory,
+  ): ReturnType<typeof setTimeout> {
+    const delay = acceptanceRetryDelayMs(failures);
+    row.status = "offline";
+    row.nextRetryAt = new Date(Date.now() + delay).toISOString();
+    const retry = setTimeout(() => this.start(row, { failures: failures + 1, transports }), delay);
+    retry.unref();
+    return retry;
+  }
   async openRoute(input: {
     serverId: string;
     scopeId: string;
@@ -531,6 +557,20 @@ export class ConnectedHosts {
   }
 }
 
+const ACCEPTANCE_RETRY_BASE_MS = 1500;
+const ACCEPTANCE_RETRY_MAX_MS = 30_000;
+
+function acceptanceRetryDelayMs(failures: number): number {
+  return Math.min(ACCEPTANCE_RETRY_BASE_MS * 2 ** failures, ACCEPTANCE_RETRY_MAX_MS);
+}
+
+const terminalFailures = new Set([
+  "server_id_mismatch",
+  "self_host",
+  "duplicate_host",
+  "authentication_failed",
+]);
+
 function connectionFailure(error: unknown, authenticationFailed: boolean): HostSummary["error"] {
   if (error instanceof HostError) return { code: error.code, message: error.message };
   if (error instanceof Error && "code" in error && error.code === "authentication_failed")

scripts/ci-workflow.test.mjs

@@ -680,51 +680,46 @@ test("macOS jobs use latest runners while preserving release architectures", ()
   assert.match(release, /runner: macos-26-intel\n\s+electron_arch: x64/);
 });
 
-test("macOS signing repair keeps certificate and keychain passwords separate", () => {
-  const workflow = readFileSync(new URL(".github/workflows/desktop-release.yml", repoRoot), "utf8");
-  const match = workflow.match(/<<'KEYCHAIN_FIX'\n([\s\S]*?)\n          KEYCHAIN_FIX/);
-  assert.ok(match, "the release workflow repairs the pinned signing tool");
-  const script = match[1].replace(/^          /gm, "");
-  const original = [
-    "return await importCerts(keychainFile, certPaths, cscPasswords);",
-    "async function importCerts(keychainFile, paths, keyPasswords) {",
-    '["import", paths[i], "-P", password]',
-    '["set-key-partition-list", "-S", "apple-tool:,apple:", "-s", "-k", password, keychainFile]',
-    "}",
-  ].join("\n");
-  const directory = mkdtempSync(join(tmpdir(), "signing-repair-"));
+test("Nix desktop packaging resolves the workspace-local builder", () => {
+  const source = readFileSync(new URL("nix/desktop-package.nix", repoRoot), "utf8");
+  const invocation = source.match(/^\s+([^\n]*electron-builder) \\\n/m)?.[1];
+  assert.ok(invocation, "Nix invokes the desktop packaging tool");
+  const directory = mkdtempSync(join(tmpdir(), "nix-builder-resolution-"));
   try {
-    const packageDirectory = join(directory, "node_modules/app-builder-lib");
-    mkdirSync(join(packageDirectory, "out/codeSign"), { recursive: true });
-    const manifest = join(packageDirectory, "package.json");
-    const sourcePath = join(packageDirectory, "out/codeSign/macCodeSign.js");
-    for (const [version, source, succeeds] of [
-      ["26.8.1", original, true],
-      ["26.8.1", original.replace("cscPasswords);", "differentArguments);"), false],
-      ["26.18.0", original, false],
-    ]) {
-      writeFileSync(manifest, JSON.stringify({ name: "app-builder-lib", version }));
-      writeFileSync(sourcePath, source);
-      const result = spawnSync(process.execPath, ["-e", script], {
-        cwd: directory,
-        encoding: "utf8",
-      });
-      const actual = readFileSync(sourcePath, "utf8");
-      if (succeeds) {
-        assert.equal(result.status, 0, result.stderr);
-        assert.ok(
-          actual.includes("importCerts(keychainFile, certPaths, cscPasswords, keychainPassword)"),
-        );
-        assert.ok(
-          actual.includes("importCerts(keychainFile, paths, keyPasswords, keychainPassword)"),
-        );
-        assert.ok(actual.includes('["import", paths[i], "-P", password]'));
-        assert.ok(actual.includes('"-k", keychainPassword, keychainFile]'));
-      } else {
-        assert.notEqual(result.status, 0);
-        assert.equal(actual, source, "unexpected tool inputs must fail without a partial write");
-      }
-    }
+    const desktop = join(directory, "packages/desktop");
+    mkdirSync(join(desktop, "node_modules/.bin"), { recursive: true });
+    mkdirSync(join(desktop, "node_modules/electron-builder"));
+    writeFileSync(
+      join(desktop, "node_modules/electron-builder/package.json"),
+      JSON.stringify({
+        name: "electron-builder",
+        version: "1.0.0",
+        bin: { "electron-builder": "../.bin/electron-builder" },
+      }),
+    );
+    writeFileSync(
+      join(directory, "package.json"),
+      JSON.stringify({ private: true, workspaces: ["packages/desktop"] }),
+    );
+    writeFileSync(
+      join(desktop, "package.json"),
+      JSON.stringify({
+        name: "desktop-fixture",
+        private: true,
+        devDependencies: { "electron-builder": "1.0.0" },
+      }),
+    );
+    writeFileSync(
+      join(desktop, "node_modules/.bin/electron-builder"),
+      '#!/bin/sh\nprintf "workspace-builder\\n"\n',
+      { mode: 0o755 },
+    );
+    const result = spawnSync("sh", ["-c", `${invocation} --version`], {
+      cwd: desktop,
+      encoding: "utf8",
+    });
+    assert.equal(result.status, 0, result.stderr);
+    assert.equal(result.stdout.trim(), "workspace-builder");
   } finally {
     rmSync(directory, { recursive: true, force: true });
   }