py-arrow and arrow: add version 0.12.1 (#11004)

Also constrain the py-arrow version to depend on the same version
of arrow (e.g. 0.12.1 of py-arrow depends on 0.12.1 of arrow)

var/spack/repos/builtin/packages/arrow/package.py

@@ -15,6 +15,7 @@ class Arrow(CMakePackage):
     homepage = "http://arrow.apache.org"
     url      = "https://github.com/apache/arrow/archive/apache-arrow-0.9.0.tar.gz"
 
+    version('0.12.1', 'aae68622edc3dcadaa16b2d25ae3f00290d5233100321993427b03bcf5b1dd3b')
     version('0.11.0', '0ac629a7775d86108e403eb66d9f1a3d3bdd6b3a497a86228aa4e8143364b7cc')
     version('0.9.0', 'ebbd36c362b9e1d398ca612f6d2531ec')
     version('0.8.0', '56436f6f61ccc68686b7e0ea30bf4d09')

var/spack/repos/builtin/packages/py-pyarrow/package.py

@@ -15,6 +15,7 @@ class PyPyarrow(PythonPackage):
     homepage = "http://arrow.apache.org"
     url      = "https://pypi.org/packages/source/p/pyarrow/pyarrow-0.9.0.tar.gz"
 
+    version('0.12.1', sha256='10db6e486c918c3af999d0114a22d92770687e3a6607ea3f14e6748854824c2a')
     version('0.11.0', sha256='07a6fd71c5d7440f2c42383dd2c5daa12d7f0a012f1e88288ed08a247032aead')
     version('0.9.0', sha256='7db8ce2f0eff5a00d6da918ce9f9cfec265e13f8a119b4adb1595e5b19fd6242')
 
@@ -25,8 +26,9 @@ class PyPyarrow(PythonPackage):
     depends_on('py-setuptools', type='build')
     depends_on('py-cython', type='build')
 
-    depends_on('arrow+python')
-    depends_on('arrow+parquet+python', when='+parquet')
+    for v in ('@0.9.0', '@0.11.0', '@0.12.1'):
+        depends_on('arrow+python' + v, when=v)
+        depends_on('arrow+parquet+python' + v, when='+parquet' + v)
 
     phases = ['build_ext', 'install']