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authorLudovic Courtès <ludo@gnu.org>2015-05-26 23:38:27 +0200
committerLudovic Courtès <ludo@gnu.org>2015-05-26 23:38:27 +0200
commit07eaecfae1add0b1b0d78047c0ac7b1229592dcb (patch)
tree4711ffccab377d9f015d747cdd61f5b71882f152 /guix/profiles.scm
parent41766807d042023b1f807cc40e9fd09fc3682a4e (diff)
profiles: Hooks always return a monadic value.
Suggested by 宋文武 <iyzsong@gmail.com>. * guix/profiles.scm (ghc-package-cache-file): Return a monadic #f, not just #f, when MANIFEST contains no GHC package. (profile-derivation): Do not filter based on the return value of HOOK; instead filter based on the value of items in EXTRAS.
Diffstat (limited to 'guix/profiles.scm')
-rw-r--r--guix/profiles.scm25
1 files changed, 15 insertions, 10 deletions
diff --git a/guix/profiles.scm b/guix/profiles.scm
index 9cb226eda7..9011449aa8 100644
--- a/guix/profiles.scm
+++ b/guix/profiles.scm
@@ -516,12 +516,14 @@ entries of MANIFEST, or #f if MANIFEST does not have any GHC packages."
(for-each delete-file (find-files db-dir "\\.conf$"))
success)))
- ;; Don't depend on GHC when there's nothing to do.
- (and (any (cut string-prefix? "ghc" <>)
- (map manifest-entry-name (manifest-entries manifest)))
- (gexp->derivation "ghc-package-cache" build
- #:modules '((guix build utils))
- #:local-build? #t)))
+ (with-monad %store-monad
+ ;; Don't depend on GHC when there's nothing to do.
+ (if (any (cut string-prefix? "ghc" <>)
+ (map manifest-entry-name (manifest-entries manifest)))
+ (gexp->derivation "ghc-package-cache" build
+ #:modules '((guix build utils))
+ #:local-build? #t)
+ (return #f))))
(define (ca-certificate-bundle manifest)
"Return a derivation that builds a single-file bundle containing the CA
@@ -602,11 +604,14 @@ the monadic procedures listed in HOOKS--such as an Info 'dir' file, etc."
(mlet %store-monad ((extras (if (null? (manifest-entries manifest))
(return '())
(sequence %store-monad
- (filter-map (lambda (hook)
- (hook manifest))
- hooks)))))
+ (map (lambda (hook)
+ (hook manifest))
+ hooks)))))
(define inputs
- (append (map gexp-input extras)
+ (append (filter-map (lambda (gexp)
+ (and (gexp? gexp)
+ (gexp-input gexp)))
+ extras)
(manifest-inputs manifest)))
(define builder