[Modules] Problems with hierarchical modules

[Gsell, A. <ach...@ps...>]

Dear All,

I'm currently playing with a hierarchical module structure, which is now supported in version 5.6. If I add a new directory to MODULEPATH in a modulefile itself, everything works fine. But as soon as I move the statement

  prepend-path MODULEPATH $something

to a procedure inside my siteconfig.tcl file I run into two issues.

First: The path $something is not removed from MODULEPATH while unloading the module.

Second: module spider —indepth doesn’t show the modules in  $something.

Example:

I have the following (simplified) modulefile for gcc/15.2.0:

  $ cat /afs/psi.ch/group/HPCE/Modules/Programming/modulefiles/gcc/15.2.0 
  #%Module

  module-help "GCC compiler collection"
  module-addpath {/afs/psi.ch/group/HPCE/Modules/Compiler/modulefiles/gcc/15.2.0}

In my siteconfig.tcl the procedure module-addpath is defined as:

  proc module-addpath { path } {
      prepend-path MODULEPATH $path
  }

I have the following modulefiles:

  [gsell@merlin-c-002 ~]$ find /afs/psi.ch/group/HPCE/Modules/*/modulefiles -type f
  /afs/psi.ch/group/HPCE/Modules/Compiler/modulefiles/gcc/15.2.0/OpenBLAS/0.3.30
  /afs/psi.ch/group/HPCE/Modules/Programming/modulefiles/gcc/15.2.0

and MODULEPATH is set to:

  [gsell@merlin-c-002 ~]$ echo $MODULEPATH 
  /afs/psi.ch/group/HPCE/Modules/Programming/modulefiles

The spider command should show the OpenBLAS module, but it doesn’t:

  [gsell@merlin-c-002 ~]$ module spider --indepth 
  ------------ /afs/psi.ch/group/HPCE/Modules/Programming/modulefiles -------------
  gcc/15.2.0  

  Key:
  modulepath  

After loading the gcc module, the OpenBLAS module is available, this is correct:

  [gsell@merlin-c-002 ~]$ module load gcc/15.2.0 
  [gsell@merlin-c-002 ~]$ module avail 
  -------- /afs/psi.ch/group/HPCE/Modules/Compiler/modulefiles/gcc/15.2.0 ---------
  OpenBLAS/0.3.30  

  ------------ /afs/psi.ch/group/HPCE/Modules/Programming/modulefiles -------------
  gcc/15.2.0  
  Key:
  loaded  modulepath 
But after unloading the gcc module, the OpenBLAS module is still available:

  [gsell@merlin-c-002 ~]$ module unload gcc/15.2.0 
  [gsell@merlin-c-002 ~]$ module avail 
  -------- /afs/psi.ch/group/HPCE/Modules/Compiler/modulefiles/gcc/15.2.0 ---------
  OpenBLAS/0.3.30  

  ------------ /afs/psi.ch/group/HPCE/Modules/Programming/modulefiles -------------
  gcc/15.2.0  

  Key:
  modulepath  
and the added directory is still in MODULEPATH:

  [gsell@merlin-c-002 ~]$ echo $MODULEPATH 
  /afs/psi.ch/group/HPCE/Modules/Compiler/modulefiles/gcc/15.2.0:/afs/psi.ch/group/HPCE/Modules/Programming/modulefiles


If I replace in the gcc/15.2.0 modulefile

  module-addpath {/afs/psi.ch/group/HPCE/Modules/Compiler/modulefiles/gcc/15.2.0}

with

  prepend-path MODULEPATH {/afs/psi.ch/group/HPCE/Modules/Compiler/modulefiles/gcc/15.2.0}

everything works as expected.

I’m not sure whether this behaviour is intended or a bug. If it is intended, how can I add something to MODULEPATH in a procedure?

Best regards,

Achim