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-rw-r--r--guix/build/haskell-build-system.scm9
1 files changed, 9 insertions, 0 deletions
diff --git a/guix/build/haskell-build-system.scm b/guix/build/haskell-build-system.scm
index c0cb789581..4506e96af9 100644
--- a/guix/build/haskell-build-system.scm
+++ b/guix/build/haskell-build-system.scm
@@ -1,5 +1,6 @@
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2015 Federico Beffa <beffa@fbengineering.ch>
+;;; Copyright © 2015 Paul van der Walt <paul@denknerd.org>
;;;
;;; This file is part of GNU Guix.
;;;
@@ -96,6 +97,14 @@ and parameters ~s~%"
'("--enable-tests")
'())
configure-flags)))
+ ;; For packages where the Cabal build-type is set to "Configure",
+ ;; ./configure will be executed. In these cases, the following
+ ;; environment variable is needed to be able to find the shell executable.
+ ;; For other package types, the configure script isn't present. For more
+ ;; information, see the Build Information section of
+ ;; <https://www.haskell.org/cabal/users-guide/developing-packages.html>.
+ (when (file-exists? "configure")
+ (setenv "CONFIG_SHELL" "sh"))
(run-setuphs "configure" params)))
(define* (build #:rest empty)