Fix symlink failure easystacks

[casparvl]

#1146 has build issues, because of the easystacks dir from software-layer-scripts is being linked in.

Here, we modify the bot/build.sh script to make sure that symlink isn't created (it's not needed / shouldn't be there anyway), and see if that fixes things. If it does, I'll take out the GCC builds, and push this as a separate fix.

[casparvl]

bot: build repo:eessi.io-2025.06-software instance:eessi-bot-mc-aws arch:x86_64/amd/zen2

[eessi-bot-aws]

New job on instance eessi-bot-mc-aws for CPU micro-architecture x86_64-amd-zen2 for repository eessi.io-2025.06-software in job dir /project/def-users/SHARED/jobs/2025.08/pr_1156/84271

date	job status	comment
Aug 20 15:55:26 UTC 2025	submitted	job id 84271 awaits release by job manager
Aug 20 15:56:04 UTC 2025	released	job awaits launch by Slurm scheduler
Aug 20 16:01:07 UTC 2025	running	job 84271 is running
Aug 20 20:08:00 UTC 2025	finished	😁 SUCCESS (click triangle for details) Details ✅ job output file slurm-84271.out ✅ no message matching FATAL: ✅ no message matching ERROR: ✅ no message matching FAILED: ✅ no message matching required modules missing: ✅ found message(s) matching No missing installations ✅ found message matching .tar.gz created! Artefacts eessi-2025.06-software-linux-x86_64-amd-zen2-17557199970.tar.gz size: 2673 MiB (2803397539 bytes) entries: 5470 modules under 2025.06/software/linux/x86_64/amd/zen2/modules/all GCC/13.3.0.lua GCC/14.2.0.lua GCCcore/13.3.0.lua GCCcore/14.2.0.lua software under 2025.06/software/linux/x86_64/amd/zen2/software GCC/13.3.0 GCC/14.2.0 GCCcore/13.3.0 GCCcore/14.2.0 reprod directories under 2025.06/software/linux/x86_64/amd/zen2/reprod GCC/13.3.0/20250820_175556UTC GCC/14.2.0/ GCC/14.2.0/20250820_195937UTC GCCcore/13.3.0/ GCCcore/13.3.0/20250820_175553UTC GCCcore/14.2.0/ GCCcore/14.2.0/20250820_195933UTC other under 2025.06/software/linux/x86_64/amd/zen2 no other files in tarball
Aug 20 20:08:00 UTC 2025	test result	😢 FAILURE (click triangle for details) Reason EESSI test suite was not run, test step itself failed to execute. Details ✅ job output file slurm-84271.out ❌ found message matching ERROR: ✅ no message matching [\s*FAILED\s*].*Ran .* test case

[boegel]

Makes perfect sense, I never anticipated to find an easystacks folder in software-layer-scripts, but it made sense in the context of EESSI/software-layer-scripts#59

[boegel]

Marked as draft since this shouldn't be merged with the easystack file included...

@casparvl Once the fix is confirmed, you'll just cherry-pick 240a472 & force push?
(don't add an extra commit to remove the easystack files for GCC 13.3.0+14.2.0)

[boegel]

@casparvl As expected, fix works.

Can you update the PR so it only includes the fix, and then we'll merge and kick off the "for real" builds in #1146 ?

edit: ah, already done :)