;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2020 Efraim Flashner <efraim@flashner.co.il>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;;
;;; GNU Guix is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.

(define-module (gnu services science)
  #:export (<rshiny-configuration>
            rshiny-configuration
            rshiny-configuration?
            rshiny-configuration-package
            rshiny-configuration-binary
            rshiny-shepherd-service
            rshiny-service-type))

(use-modules (gnu)
             (guix records)
             (ice-9 match))
(use-service-modules shepherd)
(use-package-modules cran)

(define-record-type* <rshiny-configuration>
  rshiny-configuration
  make-rshiny-configuration
  rshiny-configuration?
  (package          rshiny-configuration-package    ; file-like
                    (default r-shiny))
  (binary           rshiny-configuration-binary     ; string
                    (default "rshiny")))

(define rshiny-shepherd-service
  (match-lambda
    (($ <rshiny-configuration> package binary)
     (list
       (shepherd-service
         (documentation (string-append "R-Shiny service for " binary))
         (provision (list (symbol-append 'rshiny- (string->symbol
                                                    (string-take binary 9)))))
         (requirement '(networking))
         (start
           #~(exec-command
               (list
                 #$(string-append "/run/current-system/profile/bin/" binary))
               ;#:log-file #$(string-append "/var/log/" binary ".log") ; kills shepherd
               #:environment-variables
               (list "R_LIBS_USER=/run/current-system/profile/site-library/")))
         (stop #~(make-kill-destructor)))))))

(define rshiny-service-type
  (service-type
    (name 'rshiny)
    (extensions
      (list
        (service-extension shepherd-root-service-type
                           rshiny-shepherd-service)
        (service-extension profile-service-type
                           ;; We want the package installed so that it
                           ;; pulls in the propagated inputs as well.
                           (lambda (config)
                             (list
                               (rshiny-configuration-package config))))))
    (description
     "Run an R-Shiny webapp as a Guix Service.")))
td>Efraim Flashner</td></tr>
<tr><td><span title='2020-03-01 14:13:27 +0100'>2020-03-01</span></td><td><a href='/guix/commit/gnu/services/sddm.scm?id=50be0da7bfd5c108697679effeb2a893d2f37598'>services: set-xorg-configuration: handle slim and sddm</a><span class='msg-avail'>...</span></td><td>Jakub Kądziołka</td></tr>
<tr><td><span title='2020-02-16 09:25:00 +0200'>2020-02-16</span></td><td><a href='/guix/commit/gnu/services/sddm.scm?id=3c6aca4232d1a3638ec962bc7afe9121626c43ec'>doc: Fix typo.</a><span class='msg-avail'>...</span></td><td>Efraim Flashner</td></tr>
<tr><td><span title='2019-10-21 18:16:16 +0200'>2019-10-21</span></td><td><a href='/guix/commit/gnu/services/sddm.scm?id=cfe8d8063b5d79fc91eb757c2020244e239b77b3'>services: sddm: Add description.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2019-10-21 18:16:16 +0200'>2019-10-21</span></td><td><a href='/guix/commit/gnu/services/sddm.scm?id=8cf3e167c15a0dba3166cbeee46d41f26cbf75f1'>services: sddm: Deprecate 'sddm-service' procedure.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2019-10-21 18:16:16 +0200'>2019-10-21</span></td><td><a href='/guix/commit/gnu/services/sddm.scm?id=5ac5f2c1298cac811a544e2db193ba5d69d9fce6'>services: sddm: Add default configuration.</a><span class='msg-avail'>...</span></td><td>Brendan Tildesley</td></tr>
<tr><td><span title='2019-05-26 01:34:16 +0200'>2019-05-26</span></td><td><a href='/guix/commit/gnu/services/sddm.scm?id=ed90104cc82fdd6b762a159b06c0ea37b417a9a5'>services: sddm: Fix root login failure issue.</a><span class='msg-avail'>...</span></td><td>Reza Alizadeh Majd</td></tr>
<tr><td><span title='2019-04-11 05:42:41 +0200'>2019-04-11</span></td><td><a href='/guix/commit/gnu/services/sddm.scm?id=02394462fcddd4fdaf354178160adc54c47de1bc'>services: sddm: Switch back to using ‘startx’.</a><span class='msg-avail'>...</span></td><td>frozenpigs</td></tr>
<tr><td><span title='2019-03-25 19:24:22 +0100'>2019-03-25</span></td><td><a href='/guix/commit/gnu/services/sddm.scm?id=b283d5f6308154b42a8656f370c97168726b2ab5'>services: SDDM: Specify absolute path to the X server.</a><span class='msg-avail'>...</span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2019-03-24 23:06:11 +0100'>2019-03-24</span></td><td><a href='/guix/commit/gnu/services/sddm.scm?id=554b8607396785dcde6eb391f75f98a07ec582fd'>services: sddm, slim, gdm: Take an &lt;xorg-configuration&gt; record.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>