Doesn't build with ogre-1.9-hg-20160322

[deepfire]

Searching for OGRE headers in: /nix/store/mia9p1f0n6gnlxm9z471raclpds5s38a-ogre-1.9-hg-20160322/include/OGRE
cgen: /nix/store/mia9p1f0n6gnlxm9z471raclpds5s38a-ogre-1.9-hg-20160322/include/OGRE/OgreMath.h: hGetContents: invalid argument (invalid byte sequence)
note: keeping build directory ‘/tmp/nix-build-hogre-0.1.5.drv-1’
builder for ‘/nix/store/mb4qynl8fyrxc604nx11j78a74i7dwqf-hogre-0.1.5.drv’ failed with exit code 1

OgreMath.h is invalid unicode:

desktop@steamos:~$ iconv --from utf-8 /nix/store/mia9p1f0n6gnlxm9z471raclpds5s38a-ogre-1.9-hg-20160322/include/OGRE/OgreMath.h >/dev/null
iconv: illegal input sequence at position 14389

At line 368, col 80 the character that vim shows as ~V:

//given 3 parameters v0, v1 and t the function returns the value of (1 ~V t)* v0 + t * v1.