EasyBuild toolchain hierarhcy logic doesn't recognize llvm as toolchain

[casparvl]

  File "/home/cvanleeuwe/EESSI/eessi_test_venv/lib/python3.12/site-packages/reframe/utility/__init__.py", line 105, in _import_module_from_file
    return _do_import_module_from_file(filename, module_name)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/cvanleeuwe/EESSI/eessi_test_venv/lib/python3.12/site-packages/reframe/utility/__init__.py", line 70, in _do_import_module_from_file
    spec.loader.exec_module(module)
  File "<frozen importlib._bootstrap_external>", line 995, in exec_module
  File "<frozen importlib._bootstrap>", line 488, in _call_with_frames_removed
  File "/home/cvanleeuwe/EESSI/test-suite/eessi/testsuite/tests/libs/blas/blas.py", line 168, in <module>
    class EESSI_BLAS_OpenBLAS_mt(EESSI_BLAS_base, EESSI_Mixin):
  File "/home/cvanleeuwe/EESSI/test-suite/eessi/testsuite/tests/libs/blas/blas.py", line 172, in EESSI_BLAS_OpenBLAS_mt
    module_name = parameter(get_blas_modules('OpenBLAS'))
                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/cvanleeuwe/EESSI/test-suite/eessi/testsuite/tests/libs/blas/blas.py", line 59, in get_blas_modules
    matching_blises = sorted(select_matching_modules(blis_modules, mod))
                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/cvanleeuwe/EESSI/test-suite/eessi/testsuite/utils.py", line 242, in select_matching_modules
    mod_hierarchy = get_tc_hierarchy(mod_tcdict)
                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/cvanleeuwe/EESSI/test-suite/eessi/testsuite/utils.py", line 203, in get_tc_hierarchy
    hierarchy = get_toolchain_hierarchy(tcdict)
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/cvanleeuwe/EESSI/eessi_test_venv/lib/python3.12/site-packages/easybuild/framework/easyconfig/easyconfig.py", line 236, in cache_aware_func
    toolchain_hierarchy = func(toolchain, incl_capabilities)
                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/cvanleeuwe/EESSI/eessi_test_venv/lib/python3.12/site-packages/easybuild/framework/easyconfig/easyconfig.py", line 349, in get_toolchain_hierarchy
    subtoolchain_names = subtoolchains[current_tc_name]
                         ~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^
KeyError: 'llvm'

Log file(s) saved in '/home/cvanleeuwe/EESSI/reframe_runs/logs/reframe_20260505_190426.log'
{EESSI/2025.06} (eessi_test_venv) cvanleeuwe@synth-hca:~/EESSI$ module av llvm

------------------------------------------------------------ /cvmfs/software.eessi.io/versions/2025.06/software/linux/x86_64/generic/modules/all ------------------------------------------------------------
   AOCL-BLAS/5.1-llvm-compilers-20.1.8 (D)    FFTW/3.3.10-llvm-compilers-20.1.8     (D)    llvm-compilers/20.1.8                 LLVM/20.1.7-GCCcore-14.2.0        OpenBLAS/0.3.30-llvm-compilers-20.1.8 (D)
   BLIS/2.0-llvm-compilers-20.1.8      (D)    FlexiBLAS/3.4.5-llvm-compilers-20.1.8 (D)    LLVM/18.1.8-GCCcore-13.3.0-minimal    LLVM/20.1.8-GCCcore-14.3.0 (D)    OpenMPI/5.0.8-llvm-compilers-20.1.8   (D)

--------------------------------------------------------- This is a list of module extensions. Use "module --nx avail ..." to not show extensions. ----------------------------------------------------------
    gllvm (E)

These extensions cannot be loaded directly, use "module spider extension_name" for more information.

not sure how we get the toolchain, but the true toolchain name here is llvm-compilers, so includes a dash. Could that be the issue?

In any case, we should avoid this becoming a hard error. It's better to then just skip the test...

[smoors]

not sure how we get the toolchain, but the true toolchain name here is llvm-compilers, so includes a dash. Could that be the issue?

most probably yes, similar to intel-compilers:

test-suite/eessi/testsuite/utils.py

Line 118 in 31f911a

# special casing intel-compilers: