Hi Nicolas!

>> -;;; ob-clojure.el --- Babel Functions for Clojure    -*- lexical-binding: t; -*-
>> +;;; ob-clojure.el --- org-babel functions for clojure evaluation
> Your patch reverts a change introduced in development version. Could you
> rebase it on top of latest Org first?

Yeah sorry, I did this from the latest published version, not master. 
Fixed now.

>
>>   ;; Copyright (C) 2009-2016 Free Software Foundation, Inc.
>>   
>> @@ -55,6 +55,7 @@
>>   
>>   (defvar org-babel-default-header-args:clojure '())
>>   (defvar org-babel-header-args:clojure '((package . :any)))
>> +(defvar org-babel-clojure-nrepl-timeout 10)
> Would it make sense to turn it into a defcustom instead? If so, this
> should be added in etc/ORG-NEWS file.

Patch attached.

> Bonus points if Worg documentation
> about this back-end

Patch attached.

>
>>   (defcustom org-babel-clojure-backend
>>     (cond ((featurep 'cider) 'cider)
>> @@ -67,7 +68,7 @@
>>   
>>   (defun org-babel-expand-body:clojure (body params)
>>     "Expand BODY according to PARAMS, return the expanded body."
>> -  (let* ((vars (org-babel--get-vars params))
>> +  (let* ((vars (mapcar #'cdr (org-babel-get-header params :var)))
> You are also reverting a previous change here.

Fixed.

>
>> 	 (result-params (cdr (assoc :result-params params)))
>>   	 (print-level nil) (print-length nil)
>>   	 (body (org-babel-trim
>> @@ -94,8 +95,9 @@
>>          (let ((result-params (cdr (assoc :result-params params))))
>>   	 (setq result
>>   	       (nrepl-dict-get
>> -		(nrepl-sync-request:eval
>> -		 expanded (cider-current-connection) (cider-current-session))
>> +		(let ((nrepl-sync-request-timeout org-babel-clojure-nrepl-timeout))
>> +		  (nrepl-sync-request:eval
>> +		   expanded (cider-current-connection) (cider-current-session)))
> It seems you need to define `nrepl-sync-request-timeout' as
> a dynamically scoped variable:
>
>    (defvar nrepl-sync-request-timeout)
>
> Indeed "ob-clojure.el" uses lexical binding, even though you disabled it
> in the first line of your patch ;)

Fixed :)

> Eventually, could you add an appropriate commit message for this patch?
> Something like
>
>    ob-clojure: Make REPL timeout configurable
>
>    * lisp/ob-clojure.el (org-babel-clojure-nrepl-timeout):  New variable.
>    (org-babel-expand-body:clojure): Use new variable.
>
>    ... explanations about the motivation of the change...

Patch attached.


Hope everything is good now!

Thanks,

Fred