diff options
Diffstat (limited to 'gnu/packages.scm')
| -rw-r--r-- | gnu/packages.scm | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/gnu/packages.scm b/gnu/packages.scm index 9b111eda28..272a7628c1 100644 --- a/gnu/packages.scm +++ b/gnu/packages.scm @@ -282,7 +282,7 @@ return its return value." ;;; Package specification. ;;; -(define (%find-package spec name version) +(define* (%find-package spec name version #:key fallback?) (match (find-best-packages-by-name name version) ((pkg . pkg*) (unless (null? pkg*) @@ -290,15 +290,23 @@ return its return value." (warning (_ "choosing ~a from ~a~%") (package-full-name pkg) (location->string (package-location pkg)))) + (when fallback? + (warning (_ "deprecated NAME-VERSION syntax.~%"))) pkg) (_ (if version (leave (_ "~A: package not found for version ~a~%") name version) - (leave (_ "~A: unknown package~%") name))))) + (or fallback? + ;; XXX: Fallback to the older specification style with an hyphen + ;; between NAME and VERSION, for backward compatibility. + (let ((proc (@ (guix build utils) package-name->name+version))) + (call-with-values (proc name) + (cut %find-package spec <> <> #:fallback? #t))) + (leave (_ "~A: unknown package~%") name)))))) (define (specification->package spec) "Return a package matching SPEC. SPEC may be a package name, or a package -name followed by a hyphen and a version number. If the version number is not +name followed by an at-sign and a version number. If the version number is not present, return the preferred newest version." (let-values (((name version) (package-name->name+version spec))) (%find-package spec name version))) @@ -308,9 +316,9 @@ present, return the preferred newest version." optionally contain a version number and an output name, as in these examples: guile - guile-2.0.9 + guile@2.0.9 guile:debug - guile-2.0.9:debug + guile@2.0.9:debug If SPEC does not specify a version number, return the preferred newest version; if SPEC does not specify an output, return OUTPUT." |