stick to Python 2 as build dep for Qt5 5.13.1

[boegel]

(created using eb --new-pr)
the qtwebengine component requires that python2 is available (see also #11385)

[boegel]

@boegelbot please test @ generoso

[boegelbot]

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

PR test command 'EB_PR=11386 EB_ARGS= /apps/slurm/default/bin/sbatch --job-name test_PR_11386 ~/boegelbot/eb_from_pr_upload_generoso.sh' executed!

• exit code: 0
• output:

Submitted batch job 7970

Test results coming soon (I hope)...

- notification for comment with ID 699473188 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
SUCCESS
Build succeeded for 1 out of 1 (1 easyconfigs in this PR)
generoso-x-4 - Linux centos linux 8.2.2004, x86_64, Intel(R) Xeon(R) CPU E5-2667 v3 @ 3.20GHz (haswell), Python 3.6.8
See https://gist.github.com/ec13f2a19e45810e35434f7c64750239 for a full test report.

[boegel]

Test report by @boegel
SUCCESS
Build succeeded for 1 out of 1 (1 easyconfigs in this PR)
node3402.kirlia.os - Linux centos linux 7.8.2003, x86_64, Intel(R) Xeon(R) Gold 6240 CPU @ 2.60GHz (cascadelake), Python 2.7.5
See https://gist.github.com/5f29e982403add0808bee5003ce7ea28 for a full test report.

[boegel]

Test report by @boegel
SUCCESS
Build succeeded for 1 out of 1 (1 easyconfigs in this PR)
node3142.skitty.os - Linux centos linux 7.8.2003, x86_64, Intel(R) Xeon(R) Gold 6140 CPU @ 2.30GHz, Python 3.6.8
See https://gist.github.com/8c56a46adf0ca1a7f8d06e9361e2ae4e for a full test report.

[boegel]

Test report by @boegel
SUCCESS
Build succeeded for 1 out of 1 (1 easyconfigs in this PR)
node2703.swalot.os - Linux centos linux 7.8.2003, x86_64, Intel(R) Xeon(R) CPU E5-2660 v3 @ 2.60GHz (haswell), Python 2.7.5
See https://gist.github.com/6e2fef5daf8bde7c04a248e7ba6c0226 for a full test report.

[smoors]

Test report by @smoors
FAILED
Build succeeded for 0 out of 1 (1 easyconfigs in this PR)
node381.hydra.os - Linux centos linux 7.7.1908, x86_64, Intel(R) Xeon(R) Gold 6148 CPU @ 2.40GHz (skylake_avx512), Python 2.7.5
See https://gist.github.com/169cbb05c4136cd15497914355906dc7 for a full test report.

[smoors]

filename too long 😑

[605/17578] touch obj/services/service_manager/public/mojom/mojom_shared_cpp_sources__jumbo_merge.stamp
ninja: error: WriteFile(__services_network_public_mojom_mutable_network_traffic_annotation_interface_shared_cpp_sources__jumbo_merge__tmp_3364914.master01.hydra.brussel.vsc_tmp_vsc10009_build_Qt5_5.13.1_GCCcore-8.3.0_qt-everywhere-src-5.13.1_qtwebengine_src_toolchain_target__rule.rsp): Unable to create file. File name too long
ninja: build stopped: .
make[4]: *** [run_ninja] Error 1
make[4]: Leaving directory `/tmp/3364914.master01.hydra.brussel.vsc/tmp/vsc10009/build/Qt5/5.13.1/GCCcore-8.3.0/qt-everywhere-src-5.13.1/qtwebengine/src/core'
make[3]: *** [sub-gn_run-pro-make_first] Error 2
make[3]: Leaving directory `/tmp/3364914.master01.hydra.brussel.vsc/tmp/vsc10009/build/Qt5/5.13.1/GCCcore-8.3.0/qt-everywhere-src-5.13.1/qtwebengine/src/core'
make[2]: *** [sub-core-make_first] Error 2
make[2]: Leaving directory `/tmp/3364914.master01.hydra.brussel.vsc/tmp/vsc10009/build/Qt5/5.13.1/GCCcore-8.3.0/qt-everywhere-src-5.13.1/qtwebengine/src'
make[1]: *** [sub-src-make_first] Error 2
make[1]: Leaving directory `/tmp/3364914.master01.hydra.brussel.vsc/tmp/vsc10009/build/Qt5/5.13.1/GCCcore-8.3.0/qt-everywhere-src-5.13.1/qtwebengine'
make: *** [module-qtwebengine-make_first] Error 2

[boegel]

@smoors Do you think it's worth the effort to try and fix that somehow in the Qt5 easyblock?

First time I've seen this btw...

[smoors]

Test report by @smoors
SUCCESS
Build succeeded for 1 out of 1 (1 easyconfigs in this PR)
node368.hydra.os - Linux centos linux 7.7.1908, x86_64, Intel(R) Xeon(R) Gold 6148 CPU @ 2.40GHz (skylake_avx512), Python 2.7.5
See https://gist.github.com/7345d0ba667334a3cc51cc6b00218fbd for a full test report.

[smoors]

@smoors Do you think it's worth the effort to try and fix that somehow in the Qt5 easyblock?

I'd say no for the time being, as my EASYBUID_BUILDPATH was a bit excessive:
/tmp/3365513.master01.hydra.brussel.vsc/tmp/vsc10009/build

changing it to /local/3366898.master01.hydra.brussel.vsc fixed it for me.

we can revisit this later if other people start hitting this.
relevant bug report:
https://bugreports.qt.io/browse/QTBUG-75356?jql=text%20~%20%22file%20name%20too%20long%22

[smoors]

lgtm

[smoors]

Going in, thanks @boegel!