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lint: source: Warn only when all the URIs are unreachable.

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* guix/scripts/lint.scm (call-with-accumulated-warnings): New procedure.
  (with-accumulated-warnings): New macro.
  (check-source): Add 'try-uris' and use it.  Emit warnings only upon
  failure.
This commit is contained in:
Ludovic Courtès 2015-05-31 23:22:29 +02:00
parent 91a0b9cc0b
commit 2b5115f8ba
1 changed files with 48 additions and 3 deletions
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51
guix/scripts/lint.scm
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@ -28,6 +28,7 @@
#:use-module (guix ui)
#:use-module (guix utils)
#:use-module (guix gnu-maintenance)
#:use-module (guix monads)
#:use-module (gnu packages)
#:use-module (ice-9 match)
#:use-module (ice-9 regex)
@ -41,6 +42,7 @@
#:use-module (web request)
#:use-module (web response)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-6) ;Unicode string ports
#:use-module (srfi srfi-9)
#:use-module (srfi srfi-11)
#:use-module (srfi srfi-26)
@ -71,6 +73,25 @@
(package-full-name package)
message)))
(define (call-with-accumulated-warnings thunk)
"Call THUNK, accumulating any warnings in the current state, using the state
monad."
(let ((port (open-output-string)))
(mlet %state-monad ((state (current-state))
(result -> (parameterize ((guix-warning-port port))
(thunk)))
(warning -> (get-output-string port)))
(mbegin %state-monad
(munless (string=? "" warning)
(set-current-state (cons warning state)))
(return result)))))
(define-syntax-rule (with-accumulated-warnings exp ...)
"Evaluate EXP and accumulate warnings in the state monad."
(call-with-accumulated-warnings
(lambda ()
exp ...)))
;;;
;;; Checkers
@ -435,6 +456,16 @@ descriptions maintained upstream."
(define (check-source package)
"Emit a warning if PACKAGE has an invalid 'source' field, or if that
'source' is not reachable."
(define (try-uris uris)
(run-with-state
(anym %state-monad
(lambda (uri)
(with-accumulated-warnings
(validate-uri uri package 'source)))
(append-map (cut maybe-expand-mirrors <> %mirrors)
uris))
'()))
(let ((origin (package-source package)))
(when (and origin
(eqv? (origin-method origin) url-fetch))
@ -442,10 +473,24 @@ descriptions maintained upstream."
(uris (if (list? strings)
(map string->uri strings)
(list (string->uri strings)))))
;; Just make sure that at least one of the URIs is valid.
(any (cut validate-uri <> package 'source)
(append-map (cut maybe-expand-mirrors <> %mirrors)
uris))))))
(call-with-values
(lambda () (try-uris uris))
(lambda (success? warnings)
;; When everything fails, report all of WARNINGS, otherwise don't
;; report anything.
;;
;; XXX: Ideally we'd still allow warnings to be raised if *some*
;; URIs are unreachable, but distinguish that from the error case
;; where *all* the URIs are unreachable.
(unless success?
(emit-warning package
(_ "all the source URIs are unreachable:")
'source)
(for-each (lambda (warning)
(display warning (guix-warning-port)))
(reverse warnings)))))))))
(define (check-derivation package)
"Emit a warning if we fail to compile PACKAGE to a derivation."