* package-installed-p issue.
[not found] <20210109024756.en34g7b7ol45qtqs.ref@Ergus>
@ 2021-01-09 2:47 ` Ergus
2021-01-09 16:53 ` Stefan Monnier
2021-01-09 18:02 ` Philipp Stephani
0 siblings, 2 replies; 3+ messages in thread
From: Ergus @ 2021-01-09 2:47 UTC (permalink / raw)
To: help-gnu-emacs
Hi I'm trying to simplify some of my code in the init file and
something like:
(package-installed-p 'use-package)
Triggers an error so I need to do something like:
(unless (fboundp 'package-installed-p)
(require 'package))
(unless (package-installed-p 'use-package)
...
)
My question is: Shouldn't package-installed-p be an autoload?
Is there a reason why it is not an autoload?
Some time ago package-installed-p was loaded when calling package-initialize
but now such call is not required anymore. So what's the right way?
Thanks in advance,
Ergus
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: package-installed-p issue.
2021-01-09 2:47 ` package-installed-p issue Ergus
@ 2021-01-09 16:53 ` Stefan Monnier
2021-01-09 18:02 ` Philipp Stephani
1 sibling, 0 replies; 3+ messages in thread
From: Stefan Monnier @ 2021-01-09 16:53 UTC (permalink / raw)
To: help-gnu-emacs
> (unless (fboundp 'package-installed-p)
> (require 'package))
You can replace that with just
(require 'package)
> (unless (package-installed-p 'use-package)
> ...
> )
>
> My question is: Shouldn't package-installed-p be an autoload?
Hmm... maybe it should. Tho
(fboundp 'use-package)
might do the trick as well.
BTW what you do within the "..." tho (I can guess that there's
(package-install 'use-package) in there, but I wonder if there's much
more setup code in there).
> Is there a reason why it is not an autoload?
No strong one, no. It's basically that the need hadn't come up.
Stefan
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: package-installed-p issue.
2021-01-09 2:47 ` package-installed-p issue Ergus
2021-01-09 16:53 ` Stefan Monnier
@ 2021-01-09 18:02 ` Philipp Stephani
1 sibling, 0 replies; 3+ messages in thread
From: Philipp Stephani @ 2021-01-09 18:02 UTC (permalink / raw)
To: Ergus; +Cc: help-gnu-emacs
Am Sa., 9. Jan. 2021 um 03:48 Uhr schrieb Ergus <spacibba@aol.com>:
>
> Hi I'm trying to simplify some of my code in the init file and
> something like:
>
> (package-installed-p 'use-package)
>
> Triggers an error so I need to do something like:
>
> (unless (fboundp 'package-installed-p)
> (require 'package))
>
> (unless (package-installed-p 'use-package)
> ...
> )
>
> My question is: Shouldn't package-installed-p be an autoload?
>
> Is there a reason why it is not an autoload?
>
Most functions should not be autoloaded. Autoloads are useful for
high-level interactive commands in optional libraries, so that e.g.
users can start ERT with `M-x ert' without having to load `ert'
explicitly. In code (including ~/.emacs), just use `require' to load
the required library. There's no need to surround it with `unless' -
`require' is idempotent.
^ permalink raw reply [flat|nested] 3+ messages in thread
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2021-01-09 2:47 ` package-installed-p issue Ergus
2021-01-09 16:53 ` Stefan Monnier
2021-01-09 18:02 ` Philipp Stephani
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