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-rw-r--r--var/spack/repos/builtin/packages/graphviz/package.py3
1 files changed, 3 insertions, 0 deletions
diff --git a/var/spack/repos/builtin/packages/graphviz/package.py b/var/spack/repos/builtin/packages/graphviz/package.py
index a6aca84358..523aa49c7f 100644
--- a/var/spack/repos/builtin/packages/graphviz/package.py
+++ b/var/spack/repos/builtin/packages/graphviz/package.py
@@ -117,6 +117,9 @@ class Graphviz(AutotoolsPackage):
depends_on('bison', type='build')
depends_on('flex', type='build')
depends_on('libtool', type='build')
+ # required to build docs
+ depends_on('groff', type='build')
+ depends_on('ghostscript', type='build')
parallel = False