Solved: Can I share ~/.emacs.d/elpa with two machines?

[Rainer M Krug <Rainer@krugs.de>]

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Thanks everybody for your input. I an=m using =now the following setup:

I am using cask and pallet for all packages installed via the package
manager (I am also using use-package)

for org-mode and ess I use the uncompiled packages so using them from
different versions does not cause any headaches and makes debugging
easier.

Thanks again,

Rainer

Kaushal Modi <kaushal.modi@gmail.com> writes:

>> My only question is the contrib directory. I assume I simply also have to
> copy the files in the same version specific lisp dir?
>
> For contrib packages (well, only one package that I use from there), I use
> the org-plus-contrib package from the Org Elpa
>
> (add-to-list 'package-archives '("org" . "http://orgmode.org/elpa/") t)
>
> I have version-specific package-user-dir, so I have org-plus-contrib
> installed and compiled for all emacs versions in their own elpa_<version>
> directories.
>
> ;; Create the package install directory if it doesn't exist
> (setq package-user-dir (concat user-emacs-directory "elpa_"
>                                emacs-version-short "/")) ; default =
> ~/.emacs.d/elpa/
>
> I prefer to have both the dev version and stable version of org installed.
> So that if needed, I can switch between the two by toggling a variable and
> restarting emacs. As the package that I use from contrib does not need to
> be cutting-edge, I just use it from the already installed stable
> org-plus-contrib :)
>
> I use something like this for org version switching (if you are interested):
>
> (when (bound-and-true-p org-load-version-dev)
>     ;; if `org-load-version-dev' is non-nil
>     (add-to-list 'load-path (concat user-emacs-directory
>                                     "elisp/org-mode/lisp_"
>                                     emacs-version-short "/")))
>
> If I don't have the org-load-version-dev set to any value or if I have set
> it to nil in my emacs config, the org-plus-contrib (stable version)
> installed by the package manager will be used by default.
>
>
>
> --
> Kaushal Modi
>
> On Mon, Oct 5, 2015 at 3:54 AM, Rainer M Krug <Rainer@krugs.de> wrote:
>
>> Kaushal Modi <kaushal.modi@gmail.com> writes:
>>
>> > I also update org via git and faced the compiled code incompatibility
>> > issue. I resolved it the same way .. using version specific compiled org
>> > dirs.
>> >
>> > Here's the full code gathered from various places in my config:
>> >
>> > Part 1:
>> >
>> https://github.com/kaushalmodi/.emacs.d/blob/56b84df6ff399ab65c040d4d872dc65fb45515e6/init.el#L9-L13
>> > (setq user-home-directory     (concat (getenv "HOME") "/")) ; must end
>> with
>> > /
>> > (setq user-emacs-directory    (concat user-home-directory ".emacs.d/")) ;
>> > must end with /
>> > (setq emacs-version-short     (replace-regexp-in-string
>> >                                "\\([0-9]+\\)\\.\\([0-9]+\\).*"
>> >                                "\\1_\\2" emacs-version)) ; 25.0.50.1 ->
>> 25_0
>> >
>> > Part 2:
>> >
>> https://github.com/kaushalmodi/.emacs.d/blob/56b84df6ff399ab65c040d4d872dc65fb45515e6/setup-files/setup-org.el#L32-L34
>> >     (add-to-list 'load-path (concat user-emacs-directory
>> >                                     "elisp/org-mode/lisp_"
>> >                                     emacs-version-short "/"))
>> >
>> > Part 3: The nasty part.
>> > Use a shell script or script of your preferred flavor to build org-mode
>> for
>> > each of the emacs versions you are using and copy the built lisp/ dir to
>> > the version specific lisp dir.
>> >
>> > #!/bin/tcsh -f
>> > # Build script to compile org mode lisp for different emacs versions
>> >
>> >
>> > #
>> > # Back up your $PATH
>> > #
>> >
>> > alias get_org_mode_lisp_dir_suffix '\emacs --version | \grep -oE
>> '"'"'Emacs
>> > [0-9]+\.[0-9]+'"'"' | \awk '"'"'{print $2}'"'"' | \tr "." "_"'
>> >
>> > #** Build for emacs master
>> >
>> > #
>> > # Set the $PATH *here* to use the emacs master (built from latest in git)
>> > # I use something work proprietary like GNU Modules to do this
>> > #
>> >
>> > echo "\nBuilding for emacs version: "`\emacs --version | \grep -E 'Emacs
>> > [0-9]+\.[0-9]+'`"\n"
>> > make clean
>> > make
>> > set org_mode_lisp_dir = "lisp_"`get_org_mode_lisp_dir_suffix`
>> > if ( -d "${org_mode_lisp_dir}" ) then
>> >     \rm -rf ${org_mode_lisp_dir}
>> > endif
>> > \cp -rf lisp ${org_mode_lisp_dir}
>> >
>> > #** Build for emacs 24.5
>> >
>> > #
>> > # Set the $PATH *here* to use emacs 24.5
>> > # I use something work proprietary like GNU Modules to do this
>> > #
>> >
>> > echo "\nBuilding for emacs version: "`\emacs --version | \grep -E 'Emacs
>> > [0-9]+\.[0-9]+'`"\n"
>> > make clean
>> > make
>> > set org_mode_lisp_dir = "lisp_"`get_org_mode_lisp_dir_suffix`
>> > if ( -d "${org_mode_lisp_dir}" ) then
>> >     \rm -rf ${org_mode_lisp_dir}
>> > endif
>> > \cp -rf lisp ${org_mode_lisp_dir}
>> >
>> > unalias get_org_mode_lisp_dir_suffix
>> > unset {org_mode_lisp_dir}
>> >
>> > #
>> > # Restore your $PATH to point to your default emacs version
>> > #
>> >
>> > Part 4: Restart any one of the versions of emacs for which you compiled
>> the
>> > org files in Part 3. The org stuff will work just fine as it would pick
>> out
>> > the org files from the correct lisp_<<emacs-version-short>>/ directory.
>> >
>> > I hope all of this makes sense.
>>
>> Thanks - makes perfect sense. My only question is the contrib
>> directory. I assume I simply also have to copy the files in the same
>> version specific lisp dir?
>>
>> Rainer
>>
>>
>> >
>> >
>> >
>> > --
>> > Kaushal Modi
>> >
>> > On Fri, Oct 2, 2015 at 3:05 PM, Rainer M Krug <Rainer@krugs.de> wrote:
>> >
>> >> Kaushal Modi <kaushal.modi@gmail.com> writes:
>> >>
>> >> > @Stefan, sharing elpa/ between at least emacs 24.5 and emacs 25.x (git
>> >> > master) does not work as the complied .elc files are not compatible
>> >> between
>> >> > the two versions.
>> >>
>> >> Just jumping in as I have the two version problem.
>> >>
>> >> I am fine with most of my stuff managed by cask, therefore aware of
>> >> versions. But how can I manage org, which is via git? Any smart
>> >> suggestion how I can use this between two versions on one machine?
>> >>
>> >> Rainer
>> >>
>> >>
>> >> >
>> >> >
>> >> > --
>> >> > Kaushal Modi
>> >> >
>> >> > On Fri, Oct 2, 2015 at 11:54 AM, Stefan Monnier <
>> >> monnier@iro.umontreal.ca>
>> >> > wrote:
>> >> >
>> >> >> Yes, of course.
>> >> >>
>> >> >> Just like you can share it over NFS or any other file system.
>> >> >> You can share them even between different systems using different
>> >> >> Emacs versions, different processor architectures, and/or different
>> >> OSes.
>> >> >>
>> >> >> At least, if that leads to problems, then I'd recommend you file them
>> >> >> as bugs.
>> >> >>
>> >> >>
>> >> >>         Stefan
>> >> >>
>> >> >>
>> >> >>
>> >> >
>> >>
>> >> --
>> >> Rainer M. Krug
>> >> email: Rainer<at>krugs<dot>de
>> >> PGP: 0x0F52F982
>> >>
>> >
>>
>> --
>> Rainer M. Krug
>> email: Rainer<at>krugs<dot>de
>> PGP: 0x0F52F982
>>

-- 
Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation Biology, UCT), Dipl. Phys. (Germany)

Centre of Excellence for Invasion Biology
Stellenbosch University
South Africa

Tel :       +33 - (0)9 53 10 27 44
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email:      Rainer@krugs.de

Skype:      RMkrug

PGP: 0x0F52F982

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