diff options
Diffstat (limited to 'guix')
| -rw-r--r-- | guix/derivations.scm | 33 | ||||
| -rw-r--r-- | guix/ui.scm | 9 |
2 files changed, 36 insertions, 6 deletions
diff --git a/guix/derivations.scm b/guix/derivations.scm index 4c34fcb4b8..edf6b57e86 100644 --- a/guix/derivations.scm +++ b/guix/derivations.scm @@ -21,6 +21,8 @@ #:use-module (srfi srfi-9) #:use-module (srfi srfi-9 gnu) #:use-module (srfi srfi-26) + #:use-module (srfi srfi-34) + #:use-module (srfi srfi-35) #:use-module (rnrs io ports) #:use-module (rnrs bytevectors) #:use-module (ice-9 match) @@ -59,6 +61,13 @@ derivation-input-sub-derivations derivation-input-output-paths + &derivation-error + derivation-error? + derivation-error-derivation + &derivation-missing-output-error + derivation-missing-output-error? + derivation-missing-output + derivation-name derivation-output-names fixed-output-derivation? @@ -98,6 +107,18 @@ #:replace (build-derivations)) ;;; +;;; Error conditions. +;;; + +(define-condition-type &derivation-error &nix-error + derivation-error? + (derivation derivation-error-derivation)) + +(define-condition-type &derivation-missing-output-error &derivation-error + derivation-missing-output-error? + (output derivation-missing-output)) + +;;; ;;; Nix derivations, as implemented in Nix's `derivations.cc'. ;;; @@ -509,9 +530,15 @@ that form." (cut write-derivation drv <>)))))) (define* (derivation->output-path drv #:optional (output "out")) - "Return the store path of its output OUTPUT." - (let ((outputs (derivation-outputs drv))) - (and=> (assoc-ref outputs output) derivation-output-path))) + "Return the store path of its output OUTPUT. Raise a +'&derivation-missing-output-error' condition if OUTPUT is not an output of +DRV." + (let ((output* (assoc-ref (derivation-outputs drv) output))) + (if output* + (derivation-output-path output*) + (raise (condition (&derivation-missing-output-error + (derivation drv) + (output output))))))) (define (derivation->output-paths drv) "Return the list of name/path pairs of the outputs of DRV." diff --git a/guix/ui.scm b/guix/ui.scm index e1e75d8556..04c50f4827 100644 --- a/guix/ui.scm +++ b/guix/ui.scm @@ -249,6 +249,10 @@ interpreted." ;; FIXME: Server-provided error messages aren't i18n'd. (leave (_ "build failed: ~a~%") (nix-protocol-error-message c))) + ((derivation-missing-output-error? c) + (leave (_ "reference to invalid output '~a' of derivation '~a'~%") + (derivation-missing-output c) + (derivation-file-name (derivation-error-derivation c)))) ((message-condition? c) ;; Normally '&message' error conditions have an i18n'd message. (leave (_ "~a~%") @@ -309,9 +313,8 @@ available for download." (const #f))) (define (built-or-substitutable? drv) - (let ((out (derivation->output-path drv))) - ;; If DRV has zero outputs, OUT is #f. - (or (not out) + (or (null? (derivation-outputs drv)) + (let ((out (derivation->output-path drv))) ;XXX: assume "out" exists (or (valid-path? store out) (substitutable? out))))) |