diff options
| -rw-r--r-- | guix/build/haskell-build-system.scm | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/guix/build/haskell-build-system.scm b/guix/build/haskell-build-system.scm index fb4aba28ea..72e12ba746 100644 --- a/guix/build/haskell-build-system.scm +++ b/guix/build/haskell-build-system.scm @@ -214,14 +214,16 @@ given Haskell package." (() #t) ;done ((id . tail) (if (not (vhash-assoc id seen)) - (let ((dep-conf (string-append src "/" id ".conf")) - (dep-conf* (string-append dest "/" id ".conf"))) - (unless (file-exists? dep-conf*) - (unless (file-exists? dep-conf) + (let* ((dep-conf (string-append src "/" id ".conf")) + (dep-conf* (string-append dest "/" id ".conf")) + (dep-conf-exists? (file-exists? dep-conf)) + (dep-conf*-exists? (file-exists? dep-conf*)) + (next-tail (append lst (if dep-conf-exists? (conf-depends dep-conf) '())))) + (unless dep-conf*-exists? + (unless dep-conf-exists? (error (format #f "File ~a does not exist. This usually means the dependency ~a is missing. Was checking conf-file ~a." dep-conf id conf-file))) - (copy-file dep-conf dep-conf*) ;XXX: maybe symlink instead? - (loop (vhash-cons id #t seen) - (append lst (conf-depends dep-conf))))) + (copy-file dep-conf dep-conf*)) ;XXX: maybe symlink instead? + (loop (vhash-cons id #t seen) next-tail)) (loop seen tail)))))) (define (install-config-file conf-file dest output:doc output:lib) |