strip leading local/ from pylibdir where appropriate

[jfgrimm]

Without this, when trying to use EB to install EasyBuild as a module, I get the following error:

== 2024-09-26 13:59:47,138 pythonpackage.py:283 INFO Active Python installation scheme: posix_local
== 2024-09-26 13:59:47,140 pythonpackage.py:302 INFO Found 'local' subdirectory in installation prefix /home/userfs/c/csrv944/.local/easybuild/software/EasyBuild/4.9.4: ['local']
== 2024-09-26 13:59:47,141 pythonpackage.py:305 INFO Subdirectories of /home/userfs/c/csrv944/.local/easybuild/software/EasyBuild/4.9.4/local: ['local', 'lib', 'contrib', 'easybuild', 'etc', 'bin']
== 2024-09-26 13:59:47,404 build_log.py:171 ERROR EasyBuild crashed with an error (at easybuild/tools/build_log.py:111 in caller_info): Failed to install EasyBuild packages: [Errno 22] Invalid argument: '/home/userfs/c/csrv944/.local/easybuild/software/EasyBuild/4.9.4/local' (at easybuild/easyblocks/e/easybuildmeta.py:158 in install_step)

the [Errno 22] Invalid argument is due to trying to symlink <installdir>/local/local -> <installdir>/local which obviously won't work

[jfgrimm]

Test report by @jfgrimm

Overview of tested easyconfigs (in order)

• SUCCESS EasyBuild-4.9.4.eb

Build succeeded for 1 out of 1 (1 easyconfigs in total)
slbclpc027 - Linux Ubuntu 24.04, x86_64, Intel(R) Core(TM) i5-8500 CPU @ 3.00GHz, Python 3.12.3
See https://gist.github.com/jfgrimm/b6a341a42ac8bb01012f51d888f552cf for a full test report.

[jfgrimm]

edit: report that showcases the permissions issue with read-only-installdir enabled (see easybuilders/easybuild-framework#4658)

Test report by @jfgrimm

Overview of tested easyconfigs (in order)

• FAIL (build issue) EasyBuild-4.9.4.eb

Build succeeded for 0 out of 1 (1 easyconfigs in total)
slbclpc027 - Linux Ubuntu 24.04, x86_64, Intel(R) Core(TM) i5-8500 CPU @ 3.00GHz, Python 3.12.3
See https://gist.github.com/jfgrimm/6ceb9180ad3b951c5f49911b2899ee96 for a full test report.

[boegel]

@boegelbot please test @ generoso
EB_ARGS="EasyBuild-4.9.4.eb"

[boegel]

Test report by @boegel

Overview of tested easyconfigs (in order)

• SUCCESS matplotlib-3.9.2-gfbf-2024a.eb

Build succeeded for 1 out of 1 (1 easyconfigs in total)
node3105.skitty.os - Linux RHEL 8.8, x86_64, Intel(R) Xeon(R) Gold 6140 CPU @ 2.30GHz, Python 3.6.8
See https://gist.github.com/boegel/05a33bc5369dc94ed4ab39419c1ea19c for a full test report.

[boegelbot]

@boegel: Request for testing this PR well received on login1

PR test command 'EB_PR=3464 EB_ARGS="EasyBuild-4.9.4.eb" EB_CONTAINER= EB_REPO=easybuild-easyblocks /opt/software/slurm/bin/sbatch --job-name test_PR_3464 --ntasks=4 ~/boegelbot/eb_from_pr_upload_generoso.sh' executed!

• exit code: 0
• output:

Submitted batch job 14349

Test results coming soon (I hope)...

- notification for comment with ID 2377733130 processed

Message to humans: this is just bookkeeping information for me,
it is of no use to you (unless you think I have a bug, which I don't).

[boegelbot]

Test report by @boegelbot

Overview of tested easyconfigs (in order)

• SUCCESS EasyBuild-4.9.4.eb

Build succeeded for 1 out of 1 (1 easyconfigs in total)
cns1 - Linux Rocky Linux 8.9, x86_64, Intel(R) Xeon(R) CPU E5-2667 v3 @ 3.20GHz (haswell), Python 3.6.8
See https://gist.github.com/boegelbot/9a1634cbf568b887390daeb04ad5ac1b for a full test report.

[boegel]

lgtm

[boegel]

@boegelbot please test @ jsc-zen3
EB_ARGS="matplotlib-3.9.2-gfbf-2024a.eb"

[boegelbot]

@boegel: Request for testing this PR well received on jsczen3l1.int.jsc-zen3.fz-juelich.de

PR test command 'if [[ develop != 'develop' ]]; then EB_BRANCH=develop ./easybuild_develop.sh 2> /dev/null 1>&2; EB_PREFIX=/home/boegelbot/easybuild/develop source init_env_easybuild_develop.sh; fi; EB_PR=3464 EB_ARGS="matplotlib-3.9.2-gfbf-2024a.eb" EB_REPO=easybuild-easyblocks EB_BRANCH=develop /opt/software/slurm/bin/sbatch --job-name test_PR_3464 --ntasks=8 ~/boegelbot/eb_from_pr_upload_jsc-zen3.sh' executed!

• exit code: 0
• output:

Submitted batch job 4948

Test results coming soon (I hope)...

- notification for comment with ID 2377798797 processed

Message to humans: this is just bookkeeping information for me,
it is of no use to you (unless you think I have a bug, which I don't).

[boegelbot]

Test report by @boegelbot

Overview of tested easyconfigs (in order)

• SUCCESS matplotlib-3.9.2-gfbf-2024a.eb

Build succeeded for 1 out of 1 (1 easyconfigs in total)
jsczen3c1.int.jsc-zen3.fz-juelich.de - Linux Rocky Linux 9.4, x86_64, AMD EPYC-Milan Processor (zen3), Python 3.9.18
See https://gist.github.com/boegelbot/263fb2b395cc2202cce3ab22be66f55b for a full test report.