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channels: Compute a package cache and use it.

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* gnu/packages.scm (cache-is-authoritative?, load-package-cache)
(cache-lookup, generate-package-cache): New procedures.
(%package-cache-file): New variable.
(find-packages-by-name): Rename to...
(find-packages-by-name/direct): ... this.
(find-packages-by-name): Rewrite to use the package cache when
'cache-is-authoritative?' returns true.
* tests/packages.scm ("find-packages-by-name + version, with cache")
("find-packages-by-name with cache"): New tests.
* guix/channels.scm (package-cache-file): New procedure.
(%channel-profile-hooks): New variable.
(channel-instances->derivation): Use it in #:hooks.
* guix/scripts/package.scm (build-and-use-profile): Add #:hooks and
honor it.
* guix/scripts/pull.scm (build-and-install): Pass #:hooks to
UPDATE-PROFILE.
This commit is contained in:
Ludovic Courtès 2019-01-11 17:23:39 +01:00
parent 1d90e9d7c9
commit 5fbdc9a5aa
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5 changed files with 181 additions and 9 deletions
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guix/scripts/pull.scm
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@ -188,6 +188,7 @@ true, display what would be built without actually building it."
(mlet %store-monad ((manifest (channel-instances->manifest instances)))
(mbegin %store-monad
(update-profile profile manifest
#:hooks %channel-profile-hooks
#:dry-run? dry-run?)
(munless dry-run?
(return (display-profile-news profile))))))