[ihuman]

Alternatively, you can run `launchctl setenv SLACK_DEVELOPER_MENU true` and then the dev menu will work if you launch slack from anywhere, and will persist until you log out.

If you create the following plist in ~/Library/LaunchAgents, macOS will set that env variable every time you log in (except if you tell it to reopen windows when logging back in). Change "NAME.OF.FILE" to the plist's filename without the .plist extension.

  <?xml version="1.0" encoding="UTF-8"?>
  <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
  <plist version="1.0">
  <dict>
   <key>Label</key>
   <string>NAME.OF.FILE</string>
   <key>RunAtLoad</key>
   <true/>
   <key>ProgramArguments</key>
   <array>
    <string>sh</string>
    <string>-c</string>
    <string>launchctl setenv SLACK_DEVELOPER_MENU true</string>
   </array>
  </dict>
  </plist>

[s_gourichon]

@ihuman Is this really an "alternative"? To me it is a platform-specific "howto" (in that case, Mac OS X) that implements a platform-neutral recommendation (parent post).