Making APM work on dev builds

.github/workflows/package-tests-linux.yml

@@ -2,6 +2,8 @@ name: Package tests for Pulsar on Linux
 on:
   - push
   - pull_request
+env:
+  APM_PATH: ./apm/node_modules/atom-package-manager/bin/apm
 jobs:
   setup:
     name: setup
@@ -27,6 +29,9 @@ jobs:
     - name: build dependencies
       run: yarn build
 
+    - name: build dependencies
+      run: yarn build:apm
+
     - name: cache node module
       id: cache-node
       uses: actions/cache@v3

src/package-manager.js

@@ -190,7 +190,7 @@ module.exports = class PackageManager {
   // Return a {String} file path to apm.
   getApmPath() {
     const configPath = atom.config.get('core.apmPath');
-    if (configPath || this.apmPath) {
+    if (process.env.APM_PATH || configPath || this.apmPath) {
       return configPath || this.apmPath;
     }