Errors Verbosity Troubleshooting (ALPM — AutoLISP Package Management

12 Errors, Verbosity, Troubleshooting ¶

Set ‘(setq *alpm-verbose* T)’ to get one message per action (definition found, file loaded, …).
ALPM signals failures with the standard ‘error’ function, message prefixed ‘ALPM: …’ and naming the system, file, and phase. It never calls ‘exit’, so you handle its errors like any AutoLISP error — let them reach your ‘*error*’ handler, or catch them:
```
(setq r (vl-catch-all-apply 'alpm-load-system (list "geometry")))
(if (vl-catch-all-error-p r)
    (prompt (strcat "\nnot loaded: " (vl-catch-all-error-message r))))
```
The last message is also kept in ‘*alpm-last-error*’.
"System not found": check ‘*alpm-registry*’, and that the file is named ‘<system>.alpm’ after its primary system.
"File not found" at plan time: ALPM verifies all paths before loading anything, so a typo in ‘files’ aborts cleanly with nothing half-loaded.
Dependency cycle: the message shows the cycle (‘"a" -> "b" -> "a"’); break it by splitting a file or a system.