diff options
Diffstat (limited to 'guix/ui.scm')
| -rw-r--r-- | guix/ui.scm | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/guix/ui.scm b/guix/ui.scm index 9748471877..630afa47bf 100644 --- a/guix/ui.scm +++ b/guix/ui.scm @@ -812,20 +812,28 @@ warning." #:key dry-run? (use-substitutes? #t) (mode (build-mode normal))) "Show what will or would (depending on DRY-RUN?) be built in realizing the -derivations listed in DRV using MODE, a 'build-mode' value. Return #t if -there's something to build, #f otherwise. When USE-SUBSTITUTES?, check and -report what is prerequisites are available for download." +derivations listed in DRV using MODE, a 'build-mode' value. The elements of +DRV can be either derivations or derivation inputs. + +Return #t if there's something to build, #f otherwise. When USE-SUBSTITUTES?, +check and report what is prerequisites are available for download." + (define inputs + (map (match-lambda + ((? derivation? drv) (derivation-input drv)) + ((? derivation-input? input) input)) + drv)) + (define substitutable-info ;; Call 'substitutation-oracle' upfront so we don't end up launching the ;; substituter many times. This makes a big difference, especially when ;; DRV is a long list as is the case with 'guix environment'. (if use-substitutes? - (substitution-oracle store drv #:mode mode) + (substitution-oracle store (map derivation-input-derivation inputs) + #:mode mode) (const #f))) (let*-values (((build download) - (derivation-build-plan store - (map derivation-input drv) + (derivation-build-plan store inputs #:mode mode #:substitutable-info substitutable-info)) |