Darwin spits the following error:
Location of "tk.h": not found
Location of Tcl 8.6 library: /nix/store/zr4n0fdb3nsdp80vff9mihks22w1g8jm-tcl-8.6.6/lib
Location of Tk 8.6 library: /nix/store/bwlx46zncj2c6bv2sn75ai0wgzc89d93-tk-8.6.6/lib
Location of X11 library: /nix/store/093lzjvm2r27rprpqxvyrgqvfp1k0dlf-libX11-1.6.5/lib/
Checking if your system already has zlib installed: no.
Error: compiler g++ does not support C++0x (C++11).
scid vs pc is a chess database and playing program, a more maintained fork of
scid. scid was already packaged so this change adds a very similar expression.
Currently scid and scid-vs-pc collide since they install the same binaries.
