Adding support to build ucx development branch (#18089)

* Enabling build of v1.9.x development branch.

* v1.8.1 is the preferred (stable) version.

* Fixing code style

Co-authored-by: Filippo Spiga <fspiga@nvidia.com>
Co-authored-by: Adam J. Stewart <ajstewart426@gmail.com>

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

@@ -12,11 +12,15 @@ class Ucx(AutotoolsPackage, CudaPackage):
 
     homepage = "http://www.openucx.org"
     url      = "https://github.com/openucx/ucx/releases/download/v1.3.1/ucx-1.3.1.tar.gz"
+    git      = "https://github.com/openucx/ucx.git"
 
     maintainers = ['hppritcha']
 
+    # Development
+    version('1.9-dev', branch='v1.9.x')
+
     # Current
-    version('1.9.0', sha256='a7a2c8841dc0d5444088a4373dc9b9cc68dbffcd917c1eba92ca8ed8e5e635fb')
+    version('1.9.0', sha256='a7a2c8841dc0d5444088a4373dc9b9cc68dbffcd917c1eba92ca8ed8e5e635fb', preferred=True)
     version('1.8.1', sha256='a48820cb8d0761b5ccf3e7ba03a7c8c1dde6276017657178829e07ffc35b556a')
     version('1.8.0', sha256='e400f7aa5354971c8f5ac6b881dc2846143851df868088c37d432c076445628d')
     version('1.7.0', sha256='6ab81ee187bfd554fe7e549da93a11bfac420df87d99ee61ffab7bb19bdd3371')
@@ -71,6 +75,10 @@ class Ucx(AutotoolsPackage, CudaPackage):
 
     configure_abs_path = 'contrib/configure-release'
 
+    @when('@1.9-dev')
+    def autoreconf(self, spec, prefix):
+        Executable('./autogen.sh')()
+
     def configure_args(self):
         spec = self.spec
         config_args = []