In particular, this prevents KDE from pulling in gfortran, numpy and
atlas. We don't want anything important depending on atlas because it
has a crazy non-deterministic build system.
http://hydra.nixos.org/build/12555947
"OPC (OLE for Process Control) toolkit designed for use with Python"
This package contains a python module (OpenOPC) and a command line
client (opc). The OpenOPC Gateway Service for Windows is also copied to
$out, for reference.
It only works with python2.7 (not python3.x), so I'm not adding it to
python-packages.nix.
Also add needed dependency, python-pyro3, a distributed object
middleware for Python (IPC/RPC).
http://openopc.sourceforge.net/
Using setup.py results in the following error message:
Missing file: share/applications/gpodder.desktop
If you want to install, use "make install" instead of using
setup.py directly. See the README file for more information.
This is because of an error while using `nix` under Archlinux:
```
building path(s) `/nix/store/rwkcbhv9jfhzhandfslg62knl2xw0r7m-node-sources'
building /nix/store/rwkcbhv9jfhzhandfslg62knl2xw0r7m-node-sources
suspicious ownership or permission on `/nix/store/rwkcbhv9jfhzhandfslg62knl2xw0r7m-node-sources'; rejecting this build output
cannot build derivation `/nix/store/01qsszx9y2kyx1x72zr5magy2la98720-uglify-js-2.4.15.drv': 1 dependencies couldn't be built
```
The permissions on all file are like the following:
```
drwxrwxr-x 1 root root 358 Jun 9 17:04 .
drwxr-xr-x 1 root root 421110 Jul 21 15:49 ..
-rw-rw-r-- 1 root root 22 Jun 9 17:04 .gitattributes
```
After the fix, permissions are OK, and no suspicious error any more.
Error is encountered for any node package built. I'm not sure why it
fails on Arch but work on nixos, but I believe the flag is safe to add
anyway.
