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derivations: Make <derivation> record datatype immutable.

* guix/derivations.scm (<derivation>): Make it immutable.
(derivation): Use generic 'set-field' instead of ad-hoc functional setter.
gn-latest-20200428
Mathieu Lirzin 5 years ago
parent
commit
dc673fa113
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  1. 17
      guix/derivations.scm

17
guix/derivations.scm

@ -1,5 +1,6 @@
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2012, 2013, 2014, 2015, 2016, 2017 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2016, 2017 Mathieu Lirzin <mthl@gnu.org>
;;;
;;; This file is part of GNU Guix.
;;;
@ -120,7 +121,7 @@
;;; Nix derivations, as implemented in Nix's `derivations.cc'.
;;;
(define-record-type <derivation>
(define-immutable-record-type <derivation>
(make-derivation outputs inputs sources system builder args env-vars
file-name)
derivation?
@ -817,14 +818,6 @@ output should not be used."
e
outputs)))
(define (set-file-name drv file)
;; Set FILE as the 'file-name' field of DRV.
(match drv
(($ <derivation> outputs inputs sources system builder
args env-vars)
(make-derivation outputs inputs sources system builder
args env-vars file))))
(define input->derivation-input
(match-lambda
(((? derivation? drv))
@ -872,9 +865,9 @@ output should not be used."
(let* ((file (add-text-to-store store (string-append name ".drv")
(derivation->string drv)
(map derivation-input-path inputs)))
(drv (set-file-name drv file)))
(hash-set! %derivation-cache file drv)
drv)))
(drv* (set-field drv (derivation-file-name) file)))
(hash-set! %derivation-cache file drv*)
drv*)))
(define* (map-derivation store drv mapping
#:key (system (%current-system)))

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