guix: utils: Add version-major.

* guix/utils.scm (version-major): New procedure.
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nee 2017-10-09 23:02:05 +02:00 committed by Christopher Baines
parent 1e52fd83c2
commit 47dc9a0dae
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@ -82,6 +82,7 @@ (define-module (guix utils)
version>=? version>=?
version-prefix version-prefix
version-major+minor version-major+minor
version-major
guile-version>? guile-version>?
string-replace-substring string-replace-substring
arguments-from-environment-variable arguments-from-environment-variable
@ -497,6 +498,10 @@ (define (version-major+minor version-string)
minor version numbers from version-string." minor version numbers from version-string."
(version-prefix version-string 2)) (version-prefix version-string 2))
(define (version-major version-string)
"Return the major version number as string from the version-string."
(version-prefix version-string 1))
(define (version>? a b) (define (version>? a b)
"Return #t when A denotes a version strictly newer than B." "Return #t when A denotes a version strictly newer than B."
(eq? '> (version-compare a b))) (eq? '> (version-compare a b)))