r2r-dev / pkg-rcu

Nix package for the RCU software

This is a Nix package for RCU.

Product key

Your product key is part of the URL which you get redirected to after purchasing RCU. It's the bit just after download-.

Build, run, install

To build it, run:

$ cd ~/src/pkg-rcu
$ nix-build --argstr productKey CODE

To run the tool:

$ ./result/bin/rcu

To install it to your profile:

$ ./nix-env -i ./result

Also build the user manual PDF

Building of the user manual is disabled by default because it will pull in the rather large TexLive distribution as a dependency ... and the RCU author provides a PDF anyway.

But you can enable buildUserManual if you like with:

$ nix-build --argstr productKey CODE --arg buildUserManual true

The manual PDF will be installed at $prefix/share/doc/rcu.

Run from source with nix-shell

To get a Python development environment with all necessary dependencies:

$ nix-shell --argstr productKey ""
[nix-shell:~/src/pkg-rcu]$ cd ~/rcu-r2021-001/rcu/src
[nix-shell:~/rcu-r2021-001/rcu/src]$ python main.py

Troubleshooting

If the rcu executable from this package crashes, you may need to set up environment variables for QT5. Googling the error message from QT can often give some clues, or try the following tips.

QT Platform Plugins

For this error message:

qt.qpa.plugin: Could not find the Qt platform plugin "xcb" in ""
This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.

Fatal Python error: Aborted

Try setting:

export QT_QPA_PLATFORM=xcb

XCB GL Integration

For this error message:

qt.glx: qglx_findConfig: Failed to finding matching FBConfig for QSurfaceFormat(version 2.0, options QFlags<QSurfaceFormat::FormatOption>(), depthBufferSize -1, redBufferSize 1, greenBufferSize 1, blueBufferSize 1, alphaBufferSize -1, stencilBufferSize -1, samples -1, swapBehavior QSurfaceFormat::SingleBuffer, swapInterval 1, colorSpace QSurfaceFormat::DefaultColorSpace, profile  QSurfaceFormat::NoProfile)
Could not initialize GLX
Fatal Python error: Aborted

Try setting:

export QT_XCB_GL_INTEGRATION=none