bug#59017: 28.2; Searching using nnir stopped

[Eric Abrahamsen]

Waleed Yousef <wyousef@fcih.net> writes:

> I used to use namazu as the search engine inside gnus. All of a sudden,
> it is no longer working. Probably, this is after I started using
> spacemacs. But nothing changed. This is my configurations:
>
> (require 'nnir)
> (setq nnir-method-default-engines '((nnml . namazu)))
> (setq nnir-namazu-index-directory (expand-file-name "~/.namazu-mail"))
> (setq nnir-namazu-remove-prefix "/home/wyousef/Mail/")

nnir has been replaced by gnus-search in Emacs 28 -- this configuration
should get you obsolete variable warnings. Replacement config is pretty
direct:

(setq gnus-search-default-engines '((nnml . namazu)))
(setq gnus-search-namazu-index-directory (expand-file-name "~/.namazu-mail"))
(setq gnus-search-namazu-remove-prefix "/home/wyousef/Mail/")

Try that...