Document specs with multiple version ranges (#8284)

2018-05-30 10:36:56 -05:00
parent be8077367d
commit 87223a531b
1 changed files with 8 additions and 0 deletions
--- a/lib/spack/docs/packaging_guide.rst
+++ b/lib/spack/docs/packaging_guide.rst
@@ -1565,6 +1565,14 @@ correct way to specify this would be:

   depends_on('python@2.6.0:2.6.999')

+A spec can contain multiple version ranges separated by commas.
+For example, if you need Boost 1.59.0 or newer, but there are known
+issues with 1.64.0, 1.65.0, and 1.66.0, you can say:
+
+.. code-block:: python
+
+   depends_on('boost@1.59.0:1.63,1.65.1,1.67.0:')
+

 ^^^^^^^^^^^^^^^^
 Dependency types