require doesn't recognise manually loaded packages
reddit / emacs

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Pay08 · 2022-10-15 20:30

I installed mu4e through my package manager, which put it into
`/usr/share/emacs/site-lisp/mu4e/`. I added that to `load-path`, but
`(require 'mu4e)` gives me an error message saying "Cannot open load
file: No such file or directory, mu4e". The directory is in `load-
path` and mu4e is in `features`. What should I do?

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thetemp_ · 2022-10-15 23:05

> The directory is in load-path and mu4e is in features.

Did you mean to write that it's *not* in `features`?  If it's already
in the features list, then `require` won't load it, because the
features list is for features that have already been `provide`d.

If you're sure it hasn't been loaded yet, you could try using the
`load` function instead, like so:

    (load "/usr/share/emacs/site-lisp/mu4e/mu4e")

That should load it directly and will automatically append the
filename extension.  Unlike `require`, it won't check the `features`
list before loading.

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Pay08 · 2022-10-15 23:50

It is *in* features. But why am I only getting this error with mu4e
and not others like lsp-ui?