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refresh: Use (guix discovery).

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* guix/scripts/refresh.scm (maybe-updater, list-updaters): Remove.
(importer-modules): New procedure.
(%updaters): Define using 'fold-module-public-variables'.  Turn into a
promise and adjust users.
This commit is contained in:
Ludovic Courtès 2017-05-03 23:21:06 +02:00
parent cd903ef787
commit 634088a565
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GPG Key ID: 090B11993D9AEBB5
1 changed files with 17 additions and 59 deletions
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76
guix/scripts/refresh.scm
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@ -28,18 +28,10 @@
#:use-module (guix utils)
#:use-module (guix packages)
#:use-module (guix upstream)
#:use-module (guix discovery)
#:use-module (guix graph)
#:use-module (guix scripts graph)
#:use-module (guix monads)
#:use-module ((guix gnu-maintenance)
#:select (%gnu-updater
%gnome-updater
%kde-updater
%xorg-updater
%kernel.org-updater))
#:use-module (guix import elpa)
#:use-module (guix import cran)
#:use-module (guix import hackage)
#:use-module (guix gnupg)
#:use-module (gnu packages)
#:use-module ((gnu packages commencement) #:select (%final-inputs))
@ -163,61 +155,27 @@ specified with `--select'.\n"))
;;; Updates.
;;;
(define-syntax maybe-updater
;; Helper macro for 'list-updaters'.
(syntax-rules (=>)
((_ ((module => updater) rest ...) result)
(maybe-updater (rest ...)
(let ((iface (false-if-exception
(resolve-interface 'module)))
(tail result))
(if iface
(cons (module-ref iface 'updater) tail)
tail))))
((_ (updater rest ...) result)
(maybe-updater (rest ...)
(cons updater result)))
((_ () result)
(reverse result))))
(define-syntax-rule (list-updaters updaters ...)
"Expand to '(list UPDATERS ...)' but only the subset of UPDATERS that are
either unconditional, or have their requirement met.
A conditional updater has this form:
((SOME MODULE) => UPDATER)
meaning that UPDATER is added to the list if and only if (SOME MODULE) could
be resolved at run time.
This is a way to discard at macro expansion time updaters that depend on
unavailable optional dependencies such as Guile-JSON."
(maybe-updater (updaters ...) '()))
(define (importer-modules)
"Return the list of importer modules."
(cons (resolve-interface '(guix gnu-maintenance))
(all-modules (map (lambda (entry)
`(,entry . "guix/import"))
%load-path))))
(define %updaters
;; List of "updaters" used by default. They are consulted in this order.
(list-updaters %gnu-updater
%gnome-updater
%kde-updater
%xorg-updater
%kernel.org-updater
%elpa-updater
%cran-updater
%bioconductor-updater
((guix import stackage) => %stackage-updater)
%hackage-updater
((guix import cpan) => %cpan-updater)
((guix import pypi) => %pypi-updater)
((guix import gem) => %gem-updater)
((guix import github) => %github-updater)
((guix import crate) => %crate-updater)))
;; The list of publically-known updaters.
(delay (fold-module-public-variables (lambda (obj result)
(if (upstream-updater? obj)
(cons obj result)
result))
'()
(importer-modules))))
(define (lookup-updater-by-name name)
"Return the updater called NAME."
(or (find (lambda (updater)
(eq? name (upstream-updater-name updater)))
%updaters)
(force %updaters))
(leave (G_ "~a: no such updater~%") name)))
(define (list-updaters-and-exit)
@ -240,7 +198,7 @@ unavailable optional dependencies such as Guile-JSON."
(* 100. (/ matches total)))
(+ covered matches)))
0
%updaters))
(force %updaters)))
(newline)
(format #t (G_ "~2,1f% of the packages are covered by these updaters.~%")
@ -372,7 +330,7 @@ dependent packages are rebuilt: ~{~a~^ ~}~%"
opts)
(()
;; Use the default updaters.
%updaters)
(force %updaters))
(lists
(concatenate lists))))