Deactivate a package without uninstalling it

Deactivate a package without uninstalling it

[Stefan Monnier]

How can I prevent Emacs from activating an ELPA package which is installed
system-wide?
E.g. how can I have the AUCTeX package installed but without it
hijacking the default latex-mode?


        Stefan

Re: Deactivate a package without uninstalling it

[David Kastrup]

Stefan Monnier <monnier@iro.umontreal.ca> writes:

> How can I prevent Emacs from activating an ELPA package which is installed
> system-wide?
> E.g. how can I have the AUCTeX package installed but without it
> hijacking the default latex-mode?

The AUCTeX manual offers the following:

   If you want to remove a preinstalled AUCTeX completely before any of
its modes have been used,
     (unload-feature 'tex-site)
   should accomplish that.

I don't know how the ELPA version deals with it.

In any case,

M-x customize-variable RET TeX-modes RET

should give you control about what kind of modes you want to have AUCTeX
to provide.

-- 
David Kastrup

Re: Deactivate a package without uninstalling it

[Stefan Monnier]

>> How can I prevent Emacs from activating an ELPA package which is installed
>> system-wide?
>> E.g. how can I have the AUCTeX package installed but without it
>> hijacking the default latex-mode?
> The AUCTeX manual offers the following:

Thanks, but I want a solution that works for any ELPA package.
AUCTeX was just an example.


        Stefan

Re: Deactivate a package without uninstalling it

[Jambunathan K]

Stefan Monnier <monnier@iro.umontreal.ca> writes:

>>> How can I prevent Emacs from activating an ELPA package which is installed
>>> system-wide?
>>> E.g. how can I have the AUCTeX package installed but without it
>>> hijacking the default latex-mode?
>> The AUCTeX manual offers the following:
>
> Thanks, but I want a solution that works for any ELPA package.
> AUCTeX was just an example.

The variable down below seems to be a "whitelist". May be you are
looking for a "blacklist" variant of this variable something like
package-dont-load-list ...

,----[ C-h v package-load-list RET ]
| package-load-list is a variable defined in `package.el'.
| Its value is (all)
| 
| 
|   This variable is potentially risky when used as a file local variable.
| 
| Documentation:
| List of packages for `package-initialize' to load.
| Each element in this list should be a list (NAME VERSION), or the
| symbol `all'.  The symbol `all' says to load the latest installed
| versions of all packages not specified by other elements.
| 
| For an element (NAME VERSION), NAME is a package name (a symbol).
| VERSION should be t, a string, or nil.
| If VERSION is t, all versions are loaded, though obsolete ones
|  will be put in `package-obsolete-alist' and not activated.
| If VERSION is a string, only that version is ever loaded.
|  Any other version, even if newer, is silently ignored.
|  Hence, the package is "held" at that version.
| If VERSION is nil, the package is not loaded (it is "disabled").
| 
| You can customize this variable.
| 
| This variable was introduced, or its default value was changed, in
| version 24.1 of Emacs.
| 
| [back]
`----

>
>
>         Stefan
>
>

-- 

Re: Deactivate a package without uninstalling it

[Stefan Monnier]

> | package-load-list is a variable defined in `package.el'.

Wonderful, that does it: (setq package-load-list '((auctex nil) all))

I'd still like to have some way to control this from the
package-list-packages GUI, but that's for later,


        Stefan

Re: Deactivate a package without uninstalling it

[Tom Tromey]

>>>>> "Stefan" == Stefan Monnier <monnier@iro.umontreal.ca> writes:

Stefan> How can I prevent Emacs from activating an ELPA package which is
Stefan> installed system-wide?  E.g. how can I have the AUCTeX package
Stefan> installed but without it hijacking the default latex-mode?

I haven't followed all the changes made in Emacs, but in my original
package.el, you couldn't do this.  All you could do was remove the
package.

Tom