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utils: Add version-major+minor+point. 

* guix/utils.scm (version-major+minor+point): New procedure.
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Efraim Flashner 2020-08-13 14:47:27 +03:00
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commit 46886728a7
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guix/utils.scm
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@ -7,6 +7,7 @@
;;; Copyright © 2015 David Thompson <davet@gnu.org>
;;; Copyright © 2017 Mathieu Othacehe <m.othacehe@gmail.com>
;;; Copyright © 2018, 2020 Marius Bakke <marius@gnu.org>
;;; Copyright © 2020 Efraim Flashner <efraim@flashner.co.il>
;;;
;;; This file is part of GNU Guix.
;;;
@ -82,6 +83,7 @@
version>?
version>=?
version-prefix
version-major+minor+point
version-major+minor
version-major
guile-version>?
@ -564,6 +566,15 @@ or '= when they denote equal versions."
For example, (version-prefix \"2.1.47.4.23\" 3) returns \"2.1.47\""
(string-join (take (string-split version-string #\.) num-parts) "."))
(define (version-major+minor+point version-string)
"Return \"major>.<minor>.<point>\", where major, minor and point are the
major, minor and point version numbers from the version-string. For example,
(version-major+minor+point \"6.4.5.2\") returns \"6.4.5\" or
(version-major+minor+point \"1.19.2-2581-324ca14c3003\") returns \"1.19.2\"."
(let* ((3-dot (version-prefix version-string 3))
(index (string-index 3-dot #\-)))
(or (false-if-exception (substring 3-dot 0 index))
3-dot)))
(define (version-major+minor version-string)
"Return \"<major>.<minor>\", where major and minor are the major and