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-rw-r--r--dev-ml/zarith/metadata.xml4
1 files changed, 4 insertions, 0 deletions
diff --git a/dev-ml/zarith/metadata.xml b/dev-ml/zarith/metadata.xml
index 1ff321877..5cabf83c7 100644
--- a/dev-ml/zarith/metadata.xml
+++ b/dev-ml/zarith/metadata.xml
@@ -8,4 +8,8 @@
arithmetic over big integers. Small integers are represented as Caml
unboxed integers, for speed and space economy.
</longdescription>
+<use>
+ <flag name='mpir'>Use <pkg>sci-libs/mpir</pkg> for arbitrary
+ precision integer arithmetic</flag>
+</use>
</pkgmetadata>