[bug#41228] [PATCH 2/2] gnu: hackrf: Simplify installation instructions.

[Brice Waegeneire <brice@waegenei.re>]

* gnu/packages/radio.scm (hackrf)[description]: Replace
'modify-services' snippet with 'udev-rules-service'.
---
 gnu/packages/radio.scm | 18 ++++--------------
 1 file changed, 4 insertions(+), 14 deletions(-)

diff --git a/gnu/packages/radio.scm b/gnu/packages/radio.scm
index 1e50be1bcc..6a919548f0 100644
--- a/gnu/packages/radio.scm
+++ b/gnu/packages/radio.scm
@@ -741,20 +741,10 @@ for correctness.")
      (synopsis "User-space library and utilities for HackRF SDR")
      (description
       "Command line utilities and a C library for controlling the HackRF
-Software Defined Radio (SDR) over USB.  Installing this package installs
-the userspace hackrf utilities and C library.  To install the hackrf
-udev rules, you must add this package as a system service via
-modify-services.  E.g.:
-
-@lisp
-(services
- (modify-services
-  %desktop-services
-  (udev-service-type config =>
-   (udev-configuration (inherit config)
-    (rules (cons hackrf
-            (udev-configuration-rules config)))))))
-@end lisp")
+Software Defined Radio (SDR) over USB.  Installing this package installs the
+userspace hackrf utilities and C library.  To install the hackrf udev rules,
+you must extend 'udev-service-type' with this package.  E.g.:
+@code{(udev-rules-service 'hackrf hackrf #:groups '(\"dialout\"))}.")
      (license license:gpl2))))
 
 (define-public hamlib
-- 
2.26.2