[Lmod-users] Module path from new install and spider caching

[Bennet F. <be...@um...>]

I'm still trying to spin this up right, and I am tripping over what
may be some inconsequential details.

I installed the latest lmod using these

$ git clone https://github.com/TACC/Lmod.git lmod-6.0.29
$ checkout tags/6.0.29 -b 6.0.29

$  ./configure --prefix=/sw/arc/centos7 \
    --with-module-root-path=/sw/arc/centos7/modulefiles \
    --with-spiderCacheDir=/sw/arc/lmod/spider_cache \
    --with-updateSystemFn=/sw/arc/lmod/spider_cache/last_spider.txt

$ make install

$ ln -s /sw/arc/centos7/lmod/lmod/init/profile /etc/profile.d/z00_lmod.sh
$ ln -s /sw/arc/centos7/lmod/lmod/init/cshrc /etc/profile.d/z00_lmod.csh

After doing so and logging in MODULEPATH is set to

$ echo $MODULEPATH
/sw/arc/centos7/modulefiles/Linux:/sw/arc/centos7/modulefiles/Core:/sw/arc/centos7/lmod/lmod/modulefiles/Core

I presume that those are just provided as 'examples' and we should
modify the init scripts and such so that our site is laid out as we
wish?

I am a little confused still by the spider configuration.  I used the
two configure options, and it appears that those were registered in
that they appear at the end of
/sw/arc/centos7/lmod/6.0.29/init/lmodrc.lua,

scDescriptT = {
  {
    ["dir"] = "/sw/arc/lmod/spider_cache",
    ["timestamp"] = "/sw/arc/lmod/spider_cache/last_spider.txt",
  },
}

but I'm not quite clear on creating the system spider cache.  The
script, update_lmod_system_cache_files, says in its help that

  -d <cacheDir>
      location of Lmod cache directory (default: determine via 'ml --config')

and the ml --config seems to know about the configured cache and timestamp file,

$ ml --config 2>&1 | grep -B3 spider

Cache Directory            Time Stamp File
---------------            ---------------
/sw/arc/lmod/spider_cache  /sw/arc/lmod/spider_cache/last_spider.txt

but

$ libexec/update_lmod_system_cache_files
ERROR: $BASE_MODULEPATH is undefined

$ libexec/update_lmod_system_cache_files -d /sw/arc/lmod/spider_cache
ERROR: $BASE_MODULEPATH is undefined

and it seems not to recognize that variable even when it does exist,

[bennet@studentpc3 6.0.29]$ export BASE_MODULEPATH=/sw/arc/centos7/modulefiles

[bennet@studentpc3 6.0.29]$ libexec/update_lmod_system_cache_files
ERROR: $BASE_MODULEPATH is undefined

[bennet@studentpc3 6.0.29]$ echo $BASE_MODULEPATH
/sw/arc/centos7/modulefiles

[bennet@studentpc3 6.0.29]$ ls -ld $BASE_MODULEPATH
drwxr-sr-x. 3 bennet arcswadm 4096 Feb  7 09:41 /sw/arc/centos7/modulefiles

I'm sure there's something simple that I'm just overlooking, but I'm
not able to see it.  Pointers?

Thanks,  -- bennet