feat(BSS2): updates to software state

This should fix some problems encountered during testing of the experimental deployment.

(I'll add the SQ-Guideline PDF before unchecking "draft".)

packages/build-brainscales/package.py

@@ -15,13 +15,25 @@ import spack.build_environment
 class BuildBrainscales(WafPackage):
     """Common stuff for BrainScaleS packages..."""
 
+    version(
+        "9.0-a5",
+        git="https://github.com/electronicvisions/releases-ebrains",
+        tag="ebrains-9.0-a5",
+        commit="5fcb0682626d83c089e016aaf433e0938e921634",
+        submodules=True,
+    )
     version(
         "9.0-a4",
         git="https://github.com/electronicvisions/releases-ebrains",
         tag="ebrains-9.0-a4",
-        submodules=True, # the "submodules" parameter isn't part of the source cache key/name
+        commit="8d5be2a23ac1eb0129bdf1f83fb0a1c5193c4c85",
+        submodules=True,
     )
 
+    # common dependencies of BuildBrainscales-derived packages
+    depends_on('oppulance@9.0-a5', when='@9.0-a5', type=('build', 'link', 'run', 'test'))
+    depends_on('oppulance@9.0-a4', when='@9.0-a4', type=('build', 'link', 'run', 'test'))
+
     # waf setup performs git clone and might query gerrit
     depends_on('git', type=('build', 'link'))
     depends_on('py-git-review', type=('build', 'link'))