diff options
Diffstat (limited to 'gnu/packages/flex.scm')
| -rw-r--r-- | gnu/packages/flex.scm | 24 |
1 files changed, 21 insertions, 3 deletions
diff --git a/gnu/packages/flex.scm b/gnu/packages/flex.scm index beddb620a7..3dc7372acb 100644 --- a/gnu/packages/flex.scm +++ b/gnu/packages/flex.scm @@ -25,6 +25,7 @@ #:use-module (gnu packages m4) #:use-module (gnu packages bison) #:use-module (gnu packages indent) + #:use-module (srfi srfi-1) #:export (flex)) (define flex @@ -41,9 +42,26 @@ (build-system gnu-build-system) (arguments '(#:patches (list (assoc-ref %build-inputs "patch/bison-tests")))) - (inputs `(("patch/bison-tests" ,(search-patch "flex-bison-tests.patch")) - ("bison" ,bison) - ("indent" ,indent))) + (inputs + (let ((bison-for-tests + ;; Work around an incompatibility with Bison 3.0: + ;; <http://lists.gnu.org/archive/html/bug-bison/2013-09/msg00014.html>. + (package (inherit bison) + (version "2.7.1") + (source (origin + (method url-fetch) + (uri (string-append "mirror://gnu/bison/bison-" + version ".tar.xz")) + (sha256 + (base32 + "1yx7isx67sdmyijvihgyra1f59fwdz7sqriginvavfj5yb5ss2dl")))) + + ;; Unlike Bison 3.0, this version did not need Flex for its + ;; tests, so it allows us to break the cycle. + (inputs (alist-delete "flex" (package-inputs bison)))))) + `(("patch/bison-tests" ,(search-patch "flex-bison-tests.patch")) + ("bison" ,bison-for-tests) + ("indent" ,indent)))) (propagated-inputs `(("m4" ,m4))) (home-page "http://flex.sourceforge.net/") (synopsis "A fast lexical analyser generator") |