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Add a system' parameter to nixpkgs-derivation'.

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* guix/utils.scm (nixpkgs-derivation): Add a `system' parameter.  Pass
  it in the `nix-instantiate' invocation.
This commit is contained in:
Ludovic Courtès 2012-10-25 23:42:06 +02:00
parent b642e4b853
commit fbc93bedff
1 changed files with 3 additions and 2 deletions
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5
guix/utils.scm
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@ -460,11 +460,12 @@ starting from the right of S."
;; Capture the build-time value of $NIXPKGS.
(compile-time-value (getenv "NIXPKGS"))))
(define (nixpkgs-derivation attribute)
(define* (nixpkgs-derivation attribute #:optional (system (%current-system)))
"Return the derivation path of ATTRIBUTE in Nixpkgs."
(let* ((p (open-pipe* OPEN_READ (or (getenv "NIX_INSTANTIATE")
"nix-instantiate")
"-A" attribute (%nixpkgs-directory)))
"-A" attribute (%nixpkgs-directory)
"--argstr" "system" system))
(l (read-line p))
(s (close-pipe p)))
(and (zero? (status:exit-val s))