Re: geiser-edit-symbol-at-point

[Jake Shilling]

On 2022-11-11 18:12, jgart wrote:

> But this doesn't work for geiser-edit-symbol-at-point because it is guix API 
> code:
>
> (add-after 'build 'install-xsession
> ^^^^^^^^^

`add-after` might not be the best symbol to test on, because (with my
limited understanding of scheme) is not defined to be anything--it's
just used in the pattern matching for the `%modify-phases` macro:

```
(define-syntax %modify-phases
  (syntax-rules (delete replace add-before add-after)
    ((_ phases (delete old-phase-name))
     (alist-delete old-phase-name phases))
    ((_ phases (replace old-phase-name new-phase))
     (alist-replace old-phase-name new-phase phases))
    ((_ phases (add-before old-phase-name new-phase-name new-phase))
     (alist-cons-before old-phase-name new-phase-name new-phase phases))
    ((_ phases (add-after old-phase-name new-phase-name new-phase))
     (alist-cons-after old-phase-name new-phase-name new-phase phases))))
```

If I'm reading this right, I belive that this macro is looking for the
'add-after symbol--as a symbol--and not looking for any value referenced
by it.

I am able to run `geiser-edit-symbol-at-point` on `modify-phases`, but
not `add-after` (or related). I should also point out that Geiser only
recognizes `modify-phases` after I've already evaluated the evaluated
the form that imports the (gnu build utils) module. If I simply open the
file, start guile, and try to edit `modify-phases` nothing
happens. Geiser needs me to evaluate the (use-module (gnu build utils))
bit first.

-- 
Best regards,
Jake Shilling

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