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import: crate: Memorize crate->guix-package.

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This adds memorization to procedures that involve network lookups.
'lookup-crate*' is used on every dependency of a package to get its version
list. It is also used to lookup a package's metadata. 'crate-recursive-import'
is also memorized since creating the same package twice will trigger a lookup
on its dependencies.

* guix/import/crate.scm (lookup-crate*): New procedure.
  (crate->guix-package): Memorize package metadata lookups.
  (crate-recursive-import): Memorize package creation.
This commit is contained in:
Martin Becze 2020-01-30 11:17:00 -05:00 committed by Hartmut Goebel
parent 269c1db41b
commit d9feb23e10
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1 changed files with 6 additions and 3 deletions
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9
guix/import/crate.scm
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@ -27,6 +27,7 @@ (define-module (guix import crate)
#:use-module (guix import json)
#:use-module (guix import utils)
#:use-module ((guix licenses) #:prefix license:)
#:use-module (guix memoization)
#:use-module (guix monads)
#:use-module (guix packages)
#:use-module (guix upstream)
@ -110,6 +111,8 @@ (define (lookup-crate name)
(json->crate `(,@alist
("actual_versions" . ,versions))))))))
(define lookup-crate* (memoize lookup-crate))
(define (crate-version-dependencies version)
"Return the list of <crate-dependency> records of VERSION, a
<crate-version>."
@ -215,7 +218,7 @@ (define (normal-dependency? dependency)
(eq? (crate-dependency-kind dependency) 'normal)))
(define crate
(lookup-crate crate-name))
(lookup-crate* crate-name))
(define version-number
(and crate
@ -247,7 +250,7 @@ (define version*
(define (sort-map-dependencies deps)
(sort (map (lambda (dep)
(let* ((name (crate-dependency-id dep))
(crate (lookup-crate name))
(crate (lookup-crate* name))
(req (crate-dependency-requirement dep))
(ver (find-crate-version crate req)))
(list name
@ -276,7 +279,7 @@ (define (sort-map-dependencies deps)
(define* (crate-recursive-import crate-name #:key version)
(recursive-import crate-name
#:repo->guix-package crate->guix-package
#:repo->guix-package (memoize crate->guix-package)
#:version version
#:guix-name crate-name->package-name))