This is to help QT find all the necessary plugin libraries at startup
time, otherwise it freaks out when run out of 'nix-env' environment or
run directly, e.g. `./result/bin/nextpnr-ice40 --gui`. The reason for
this is that none of the traditional paths it looks for are available.
The workarounds for this are to otherwise:
- Install e.g. into environment.systemPackages (presumably it will
then pick up QT libraries in /run/current-system/sw/lib/qt-*)
- Install 'qtbase' into your user environment (qt will also try to
load dependent libraries out of ~/.nix-profile/lib/qt-*)
However, this QT_PLUGIN_PATH wrapping hack is used elsewhere in the
tree, presumably to mitigate these (poor) workarounds, especially for
non-NixOS users. There seems to be no downside to this.
With this, I have been able to run NextPNR's GUI on an Ubuntu 16.04
system using the 'nixGL' hack by simply running the resulting binary
from anywhere (though there seems to be some glitching artifacts in the
floorplan UI, I suspect this is due to a buggy OpenGL stack rather than
any direct problem with NextPNR or the QT libraries themselves).
This does not mark the GUI build as non-broken yet, though. That will
happen in the future after a bit more testing and splitting nextpnr into
separate minimal/GUI attributes.
Signed-off-by: Austin Seipp <aseipp@pobox.com>
Before this commit it built fine a few times for me,
i.e. without the single test, but it failed on Hydra anyway.
I guess jtojnar also tested the final expression with all tests,
so apparently they are sensitive the the kind of machine they run on.
add libressl, drop patch
neither openssl 1.0 (headers not found) nor openssl 1.1 (configuration
failed when trying to test constants) work, but libressl does
The build was broken by the python 3.7 switch, which caused an
incompatible change in the way cython generates files:
https://github.com/Kozea/tinycss/issues/17
This is solved by removing the pre-generated file and re-generating it
at build time.
See #49441 for an earlier attempt, which was subsequently reverted. I am
assuming that doubling the time will be sufficient if the machine is
overloaded since so many of the tests already pass at 5 minutes, while
still not holding back failures for needlessly long.
Vladimír Čunát