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-rw-r--r--var/spack/repos/builtin/packages/bison/package.py1
1 files changed, 1 insertions, 0 deletions
diff --git a/var/spack/repos/builtin/packages/bison/package.py b/var/spack/repos/builtin/packages/bison/package.py
index 709e890567..e3305d7a8f 100644
--- a/var/spack/repos/builtin/packages/bison/package.py
+++ b/var/spack/repos/builtin/packages/bison/package.py
@@ -59,6 +59,7 @@ class Bison(AutotoolsPackage, GNUMirrorPackage):
depends_on("gettext", when="+color")
depends_on("m4@1.4.6:", type=("build", "run"))
+ depends_on("diffutils", type="build")
patch("pgi.patch", when="@3.0.4")
# The NVIDIA compilers do not currently support some GNU builtins.