julia in emacs path

[Steve Bellan]

Hi all, I'm trying to get julia working via ESS in Aquamacs 3.0a. I managed to get it running on one computer but can't seem to get it on another one with very similar setups. The first thing I did was add this to my .emacs

(setq inferior-julia-program-name "/Applications/Julia-0.2.1.app/Contents/Resources/julia/bin/julia")

I also tried

(setq inferior-julia-program-name "/Applications/Julia-0.2.1.app/Contents/Resources/julia/bin/julia-basic")

Also, in the instructions here it says to also have

(load "path/to/ESS/git/lisp/ess-site")

or

(require 'ess-site)

in .emacs. But both of these return the following error with the newer versions of Aquamacs/Emacs. I assume this is because ESS is now pre-packaged with emacs distributions but am not sure:

File error: Cannot open load file, no such file or directory, ess-site

ESS is working with R still on this computer, so it does seem to be loaded.

With either the julia or julia-basic version above, M-x julia doesn't work (emacs says [No match]). I then tried to start julia from a shell started in the terminal. It didn't work because julia didn't seem to be in my path. So I added julia to my PATH in .bash_profile and can stat it now by typing 'julia' in shell now from the terminal. But if I start shell in Emacs, it still doesn't work. I figured out that this was because shell in emacs doesn't run .bash_profile automatically. So I added

(setenv "PATH" (shell-command-to-string "source ~/.bash_profile; echo -n $PATH"))

to my .emacs. But then I get this error:

bash-3.2$ julia
ERROR: could not start process `tput setaf 0`: no such file or directory (ENOENT)
 in test_success at process.jl:460
 in success at process.jl:468
 in _start at client.jl:417




Process shell exited abnormally with code 1

I'm not very experienced with .emacs or .bash_profiles or PATH variables. So any help would be much appreciated!

Thanks,

Steve

[Ista Zahn]

Hi Steve,

I'm guess that at least part of the problem is that OSX doesn't set
environment variables nicely, making it hard for emacs to find things.
Try installing https://github.com/purcell/exec-path-from-shell in
emacs, restart, and see if that does the trick.

Best,
Ista

[Steve Bellan]

Thanks for that. I installed the package but it's still not functioning. Interestingly, I have noticed that I neither start R nor Julia from an Emacs shell. And again, although M-x R does work M-x julia does not. Other ideas?

[Steve Bellan]

scratch that, R does start up in the emacs shell. And I fixed my path variable so I can start julia up in the emacs shell too (had a syntax error in my .bash_profile).

What I still cannot get is M-x julia to work on emacs start-up. However, M-x julia does work once I've run M-x R. It seems like M-x R is loading ESS somehow? However, once I get julia open with M-x julia, Julia is basically frozen. If I C-g, then it unfreezes but seems to be a read-only buffer with no working julia implementation..

[Steve Bellan]

OK, got it working after more playing. I had to remove the path from my .emacs file & get it write in the .bash_profile. It seemed that the path was set more than once in emacs & bash and this was causing the crash and ess not recognizing it.

[Ista Zahn]

Hi Steve,

Glad you got it working. I just tried it out with aquamacs (can't
stand it myself, but to each his own...) and it worked for me,
provided that I set

(setq inferior-julia-program-name
"/Applications/Julia-0.2.1.app/Contents/Resources/julia/bin/julia-basic")

rather than

(setq inferior-julia-program-name
"/Applications/Julia-0.2.1.app/Contents/Resources/julia/bin/julia")

Best,
Ista