GNU bug report logs - #25101
simple-scan can't use hpaio

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Message #11 received at 25101 <at> debbugs.gnu.org (full text, mbox):

From: Andy Patterson <ajpatter <at> uwaterloo.ca>
To: 25101 <at> debbugs.gnu.org
Cc: Danny Milosavljevic <dannym <at> scratchpost.org>,
 Andy Patterson <ajpatter <at> uwaterloo.ca>
Subject: [PATCH 1/2] gnu: Add hpaio-enabled sane-backends variant.
Date: Sat,  3 Dec 2016 23:00:36 -0500

* gnu/packages/scanner.scm (sane-backends+hpaio): New variable.
---
 gnu/packages/scanner.scm | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/gnu/packages/scanner.scm b/gnu/packages/scanner.scm
index 76817b3..f918291 100644
--- a/gnu/packages/scanner.scm
+++ b/gnu/packages/scanner.scm
@@ -1,6 +1,7 @@
 ;;; GNU Guix --- Functional package management for GNU
 ;;; Copyright © 2014 John Darrington <jmd <at> gnu.org>
 ;;; Copyright © 2015 Andy Wingo <wingo <at> igalia.com>
+;;; Copyright © 2016 Andy Patterson <ajpatter <at> uwaterloo.ca>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -20,6 +21,7 @@
 (define-module (gnu packages scanner)
   #:use-module (guix packages)
   #:use-module (guix download)
+  #:use-module (guix utils)
   #:use-module (guix build-system gnu)
   #:use-module (gnu packages pkg-config)
   #:use-module (gnu packages libusb)
@@ -73,3 +75,31 @@ proving access to any raster image scanner hardware (flatbed scanner,
 hand-held scanner, video- and still-cameras, frame-grabbers, etc.).  The
 package contains the library and drivers.")
     (license licence:gpl2+))) ; plus linking exception
+
+(define-public sane-backends+hpaio
+  (package
+    (inherit sane-backends)
+    (name "sane-backends+hpaio")
+    (inputs
+     `(("hplip" ,(@ (gnu packages cups) hplip))
+       ,@(package-inputs sane-backends)))
+    (arguments
+     (substitute-keyword-arguments (package-arguments sane-backends)
+       ((#:phases phases)
+        `(modify-phases ,phases
+           (add-after 'unpack 'add-backends
+             (lambda _
+               (substitute* "backend/dll.conf.in"
+                 (("hp5590" all) (format #f "~a~%~a" all "hpaio")))
+               #t))
+           (add-after 'install 'install-hpaio
+             (lambda* (#:key inputs outputs #:allow-other-keys)
+               (define hplip (string-append (assoc-ref inputs "hplip")
+                                            "/lib/sane"))
+               (define out (string-append (assoc-ref outputs "out")
+                                          "/lib/sane"))
+               (for-each
+                (lambda (file)
+                  (symlink file (string-append out "/" (basename file))))
+                (find-files hplip))
+               #t))))))))
-- 
2.10.2

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