Concretization problem breaks httpie dependency (#3629)

* Concretization problem breaks httpie dependency

Concretization problem breaks this.  Unconditional for now...
https://github.com/LLNL/spack/issues/3628

* Flake8 cleanups

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

@@ -40,4 +40,8 @@ class Httpie(PythonPackage):
     depends_on('py-pygments@2.1.3:', type=('build', 'run'))
     depends_on('py-requests@2.11.0:', type=('build', 'run'))
     depends_on('py-pysocks', type=('build', 'run'), when="+socks")
-    depends_on('py-argparse@1.2.1:', type=('build', 'run'), when='^python@:2.6,3.0:3.1')
+    # Concretization problem breaks this.  Unconditional for now...
+    # https://github.com/LLNL/spack/issues/3628
+    # depends_on('py-argparse@1.2.1:', type=('build', 'run'), 
+    #            when='^python@:2.6,3.0:3.1')
+    depends_on('py-argparse@1.2.1:', type=('build', 'run'))