fix: IPC handle is longer than 103 chars error in build

Author: eleanorjboyd

.github/workflows/pr-check.yml

@@ -152,10 +152,7 @@ jobs:
         run: npm run compile-tests
 
       - name: Configure Test Settings
-        run: |
-          mkdir -p .vscode-test/user-data/User
-          echo '{"python.useEnvironmentsExtension": true}' > .vscode-test/user-data/User/settings.json
-        shell: bash
+        run: node build/setup-test-user-data.mjs
 
       - name: Run Smoke Tests (Linux)
         if: runner.os == 'Linux'
@@ -245,10 +242,7 @@ jobs:
         run: npm run compile-tests
 
       - name: Configure Test Settings
-        run: |
-          mkdir -p .vscode-test/user-data/User
-          echo '{"python.useEnvironmentsExtension": true}' > .vscode-test/user-data/User/settings.json
-        shell: bash
+        run: node build/setup-test-user-data.mjs
 
       - name: Run E2E Tests (Linux)
         if: runner.os == 'Linux'
@@ -338,10 +332,7 @@ jobs:
         run: npm run compile-tests
 
       - name: Configure Test Settings
-        run: |
-          mkdir -p .vscode-test/user-data/User
-          echo '{"python.useEnvironmentsExtension": true}' > .vscode-test/user-data/User/settings.json
-        shell: bash
+        run: node build/setup-test-user-data.mjs
 
       - name: Run Integration Tests (Linux)
         if: runner.os == 'Linux'
@@ -388,10 +379,7 @@ jobs:
         run: npm run compile-tests
 
       - name: Configure Test Settings
-        run: |
-          mkdir -p .vscode-test/user-data/User
-          echo '{"python.useEnvironmentsExtension": true}' > .vscode-test/user-data/User/settings.json
-        shell: bash
+        run: node build/setup-test-user-data.mjs
 
       - name: Run Integration Tests Multi-Root (Linux)
         if: runner.os == 'Linux'

.github/workflows/push-check.yml

@@ -153,10 +153,7 @@ jobs:
         run: npm run compile-tests
 
       - name: Configure Test Settings
-        run: |
-          mkdir -p .vscode-test/user-data/User
-          echo '{"python.useEnvironmentsExtension": true}' > .vscode-test/user-data/User/settings.json
-        shell: bash
+        run: node build/setup-test-user-data.mjs
 
       - name: Run Smoke Tests (Linux)
         if: runner.os == 'Linux'
@@ -246,10 +243,7 @@ jobs:
         run: npm run compile-tests
 
       - name: Configure Test Settings
-        run: |
-          mkdir -p .vscode-test/user-data/User
-          echo '{"python.useEnvironmentsExtension": true}' > .vscode-test/user-data/User/settings.json
-        shell: bash
+        run: node build/setup-test-user-data.mjs
 
       - name: Run E2E Tests (Linux)
         if: runner.os == 'Linux'
@@ -339,10 +333,7 @@ jobs:
         run: npm run compile-tests
 
       - name: Configure Test Settings
-        run: |
-          mkdir -p .vscode-test/user-data/User
-          echo '{"python.useEnvironmentsExtension": true}' > .vscode-test/user-data/User/settings.json
-        shell: bash
+        run: node build/setup-test-user-data.mjs
 
       - name: Run Integration Tests (Linux)
         if: runner.os == 'Linux'

.vscode-test.mjs

@@ -1,8 +1,12 @@
 import { defineConfig } from '@vscode/test-cli';
+import * as os from 'os';
 import * as path from 'path';
 
-// Explicit user data directory - ensures VS Code reads our settings.json
-const userDataDir = path.resolve('.vscode-test/user-data');
+// Keep this path short: macOS caps Unix-domain socket paths at 103 chars and
+// VS Code creates `<userDataDir>/<x.y>-main.sock`. An in-workspace location
+// (e.g. /Users/runner/work/<repo>/<repo>/.vscode-test/user-data) overflows.
+// Must match build/setup-test-user-data.mjs.
+const userDataDir = path.join(os.tmpdir(), 'vsct-ud');
 
 export default defineConfig([
     {

build/setup-test-user-data.mjs

@@ -0,0 +1,19 @@
+// Writes the VS Code test user-data settings.json to a short path under
+// os.tmpdir(). Used by CI to seed `python.useEnvironmentsExtension=true`.
+// `.vscode-test.mjs` MUST compute the same `userDataDir` so both sides agree.
+//
+// Why os.tmpdir(): macOS Unix-domain socket paths are capped at 103 chars.
+// VS Code creates `<userDataDir>/<x.y>-main.sock`, so an in-workspace path
+// like `/Users/runner/work/<repo>/<repo>/.vscode-test/user-data/...` overflows.
+import * as fs from 'fs';
+import * as os from 'os';
+import * as path from 'path';
+
+const userDataDir = path.join(os.tmpdir(), 'vsct-ud');
+const userDir = path.join(userDataDir, 'User');
+fs.mkdirSync(userDir, { recursive: true });
+fs.writeFileSync(
+    path.join(userDir, 'settings.json'),
+    JSON.stringify({ 'python.useEnvironmentsExtension': true }) + '\n',
+);
+console.log(userDataDir);