diff options
Diffstat (limited to 'guix/utils.scm')
| -rw-r--r-- | guix/utils.scm | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/guix/utils.scm b/guix/utils.scm index c61f105513..de541799fa 100644 --- a/guix/utils.scm +++ b/guix/utils.scm @@ -3,6 +3,7 @@ ;;; Copyright © 2013, 2014, 2015 Mark H Weaver <mhw@netris.org> ;;; Copyright © 2014 Eric Bavier <bavier@member.fsf.org> ;;; Copyright © 2014 Ian Denhardt <ian@zenhack.net> +;;; Copyright © 2016 Mathieu Lirzin <mthl@gnu.org> ;;; Copyright © 2015 David Thompson <davet@gnu.org> ;;; ;;; This file is part of GNU Guix. @@ -31,8 +32,7 @@ #:use-module (rnrs bytevectors) #:use-module (rnrs io ports) #:use-module ((rnrs bytevectors) #:select (bytevector-u8-set!)) - #:use-module ((guix build utils) - #:select (dump-port package-name->name+version)) + #:use-module ((guix build utils) #:select (dump-port)) #:use-module ((guix build syscalls) #:select (errno mkdtemp!)) #:use-module (ice-9 vlist) #:use-module (ice-9 format) @@ -42,7 +42,6 @@ #:use-module (ice-9 match) #:use-module (ice-9 format) #:use-module (system foreign) - #:re-export (package-name->name+version) #:export (bytevector->base16-string base16-string->bytevector @@ -66,6 +65,7 @@ gnu-triplet->nix-system %current-system %current-target-system + package-name->name+version version-compare version>? version>=? @@ -544,6 +544,15 @@ returned by `config.guess'." ;; cross-building to. (make-parameter #f)) +(define (package-name->name+version spec) + "Given SPEC, a package name like \"foo@0.9.1b\", return two values: \"foo\" +and \"0.9.1b\". When the version part is unavailable, SPEC and #f are +returned. Both parts must not contain any '@'." + (match (string-rindex spec #\@) + (#f (values spec #f)) + (idx (values (substring spec 0 idx) + (substring spec (1+ idx)))))) + (define version-compare (let ((strverscmp (let ((sym (or (dynamic-func "strverscmp" (dynamic-link)) |