03/07: Move 'nix-system->gnu-triplet' to (guix utils) and export it.

[Mark H. Weaver]

mhw pushed a commit to branch wip-armhf
in repository guix.

commit 09f18f248a91c5482741f9924072247de5d21d3a
Author: Mark H Weaver <address@hidden>
Date:   Wed Dec 31 03:47:40 2014 -0500

    Move 'nix-system->gnu-triplet' to (guix utils) and export it.
    
    * gnu/packages/commencement.scm (nix-system->gnu-triplet): Move to...
    * guix/utils.scm (nix-system->gnu-triplet): ... here.  Fix docstring typo.
---
 gnu/packages/commencement.scm |   13 -------------
 guix/utils.scm                |   14 ++++++++++++++
 2 files changed, 14 insertions(+), 13 deletions(-)

diff --git a/gnu/packages/commencement.scm b/gnu/packages/commencement.scm
index 20831de..e6d03b1 100644
--- a/gnu/packages/commencement.scm
+++ b/gnu/packages/commencement.scm
@@ -122,19 +122,6 @@
     ("file" ,file-boot0)
     ,@%bootstrap-inputs))
 
-(define* (nix-system->gnu-triplet
-          #:optional (system (%current-system)) (vendor "unknown"))
-  "Return an a guess of the GNU triplet corresponding to Nix system
-identifier SYSTEM."
-  (let* ((dash (string-index system #\-))
-         (arch (substring system 0 dash))
-         (os   (substring system (+ 1 dash))))
-    (string-append arch
-                   "-" vendor "-"
-                   (if (string=? os "linux")
-                       "linux-gnu"
-                       os))))
-
 (define* (boot-triplet #:optional (system (%current-system)))
   ;; Return the triplet used to create the cross toolchain needed in the
   ;; first bootstrapping stage.
diff --git a/guix/utils.scm b/guix/utils.scm
index d0d2e8a..7ac586b 100644
--- a/guix/utils.scm
+++ b/guix/utils.scm
@@ -61,6 +61,7 @@
             location-column
             source-properties->location
 
+            nix-system->gnu-triplet
             gnu-triplet->nix-system
             %current-system
             %current-target-system
@@ -476,6 +477,19 @@ previous value of the keyword argument."
          (()
           (reverse before)))))))
 
+(define* (nix-system->gnu-triplet
+          #:optional (system (%current-system)) (vendor "unknown"))
+  "Return a guess of the GNU triplet corresponding to Nix system
+identifier SYSTEM."
+  (let* ((dash (string-index system #\-))
+         (arch (substring system 0 dash))
+         (os   (substring system (+ 1 dash))))
+    (string-append arch
+                   "-" vendor "-"
+                   (if (string=? os "linux")
+                       "linux-gnu"
+                       os))))
+
 (define (gnu-triplet->nix-system triplet)
   "Return the Nix system type corresponding to TRIPLET, a GNU triplet as
 returned by `config.guess'."