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Austin Seipp 3d36ea6a05 nextpnr: with GUI support, be sure to set QT_PLUGIN_PATH
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>
2019-01-12 15:51:00 -06:00
.github codeowners: fix reference to renamed file 2018-12-26 10:42:11 +01:00
doc Merge pull request #53447 from timokau/neovim-qt-wrapper 2019-01-08 20:24:03 +08:00
lib Merge pull request #53754 from danbst/lib-fake-hashes 2019-01-10 17:56:09 +00:00
maintainers Merge pull request #53743 from baracoder/add-nvidia-maintainer 2019-01-11 19:09:40 +01:00
nixos Merge pull request #51661 from eonpatapon/testing-hosts 2019-01-12 20:41:13 +01:00
pkgs nextpnr: with GUI support, be sure to set QT_PLUGIN_PATH 2019-01-12 15:51:00 -06:00
.editorconfig Revert ".version: remove final newline" 2018-04-28 14:23:13 +02:00
.gitattributes gitattributes: disable merge=union in all-packages 2018-03-27 11:03:03 -05:00
.gitignore Replace androidenv by new implementation 2018-12-18 21:16:06 +01:00
.version 18.09 -> 19.03 2018-09-02 16:45:00 -04:00
COPYING COPYING: move notice to README.md 2018-10-13 13:22:18 +00:00
default.nix Fix local path to release notes in error message 2018-10-08 05:43:15 -05:00
README.md doc/reviewing-contributions: pull-requests -> pull requests 2018-11-19 13:03:23 -06:00

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