fityk: fix build

The build fails with boost 187, pinning to 186 it is.

Changed files
+2 -2
pkgs
by-name
fi
fityk
+2 -2
pkgs/by-name/fi/fityk/package.nix
···
fetchFromGitHub,
autoreconfHook,
wxGTK32,
-
boost,
+
boost186,
lua,
zlib,
bzip2,
···
];
buildInputs = [
wxGTK32
-
boost
+
boost186
lua
zlib
bzip2