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authorLudovic Courtès <ludo@gnu.org>2013-04-17 00:06:59 +0200
committerLudovic Courtès <ludo@gnu.org>2013-04-17 00:08:21 +0200
commitdd36b51bf7cffa389726ad997465b14f7072944a (patch)
tree7c80a1b36acd81841204444cf6d9fe0b016ff0cc /gnu/packages/lsh.scm
parentacb6ba256703da1db1d300541e15a4e7428f622b (diff)
downloadpatches-dd36b51bf7cffa389726ad997465b14f7072944a.tar
patches-dd36b51bf7cffa389726ad997465b14f7072944a.tar.gz
scripts: Report what will be substituted.
* guix/derivations.scm (derivation-input-output-paths): New procedure. (derivation-prerequisites-to-build): New `use-substitutes?' keyword argument. Change two return the list of substitutable paths as a second argument. * guix/ui.scm (show-what-to-build): Turn `dry-run?' into a keyword argument. New `use-substitutes?' keyword argument. Use `fold2' and adjust to use both return values of `derivation-prerequisites-to-build'. Display what will/would be downloaded. * guix/scripts/build.scm (guix-build): Adjust accordingly. * guix/scripts/package.scm (guix-package): Likewise. * tests/derivations.scm ("derivation-prerequisites-to-build and substitutes"): New test.
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