Dependency break for GHC 8.0.2? [more or less self resolved]

[codeweaverx]

After some cabal file hacking, I got around this I think. I'm having a different issue with linking, which I will post separately, which I hope you can help me resolve.

For the record, I just had to tell the gl library to accept a wider range of allowable dependencies for the directory library.

---

Hi! I'm just getting together the necessary tools and dependencies to try out your OpenVR/Haskell linkages. I think I'm almost there. I managed to build your lens-extra and linear-extra packages.

However, when I tried to build your gl-pal package, I encountered the errors below. I could fight with tracking down the offending library lines, but I thought I'd ask if you'd encountered this yet, and how to quickly fix it.

Looking forward to experimenting with Haskell based VR. :)

---

CodeWeaver@LongShot MINGW64 ~/Documents/Programming/Haskell/OpenVR
$ cd gl-pal

CodeWeaver@LongShot MINGW64 ~/Documents/Programming/Haskell/OpenVR/gl-pal
$ cabal sandbox init --sandbox ../
Writing a default package environment file to C:\msys64\home\Michael
Jones\Documents\Programming\Haskell\OpenVR\gl-pal\cabal.sandbox.config
Using an existing sandbox located at C:\msys64\home\Michael
Jones\Documents\Programming\Haskell\OpenVR\

CodeWeaver@LongShot MINGW64 ~/Documents/Programming/Haskell/OpenVR/gl-pal
$ cabal install
Resolving dependencies...
In order, the following would be installed:
async-2.1.1 (via: fsnotify-0.2.1) (new package)
clock-0.7.2 (via: gl-pal-0.1.0.0) (new package)
colour-2.3.3 (via: gl-pal-0.1.0.0) (new package)
directory-1.2.7.1 (latest: 1.3.1.0) (via: fsnotify-0.2.1 unix-compat-0.4.3.1 gl-0.7.8.1 cabal-doctest-1 Cabal-1.24.2.0 process-1.4.3.0 hxt-9.3.1.16 file-embed-0.0.10 Win32-notify-0.3.0.1) (new version)
Win32-notify-0.3.0.1 (via: fsnotify-0.2.1) (new package)
file-embed-0.0.10 (via: gl-pal-0.1.0.0) (new package)
fixed-0.2.1.1 (via: gl-0.7.8.1) (new package)
half-0.2.2.3 (via: gl-0.7.8.1) (new package)
hxt-charproperties-9.2.0.1 (via: hxt-9.3.1.16 hxt-regex-xmlschema-9.2.0.3 hxt-unicode-9.0.2.4) (new package)
hxt-unicode-9.0.2.4 (via: hxt-9.3.1.16) (new package)
parsec-3.1.11 (via: hxt-9.3.1.16 network-uri-2.6.1.0 hxt-regex-xmlschema-9.2.0.3) (new package)
hxt-regex-xmlschema-9.2.0.3 (via: hxt-9.3.1.16) (new package)
network-uri-2.6.1.0 (via: hxt-9.3.1.16) (new package)
hxt-9.3.1.16 (via: gl-0.7.8.1) (new package)
process-1.4.3.0 (latest: 1.6.0.0) (via: Cabal-1.24.2.0) (reinstall) (changes: directory-1.3.0.0 removed)
Cabal-1.24.2.0 (via: cabal-doctest-1) (reinstall) (changes: directory-1.3.0.0 removed, process-1.4.3.0 removed)
cabal-doctest-1 (reinstall) (changes: Cabal-1.24.2.0 removed, directory-1.3.0.0 removed)
split-0.2.3.1 (via: gl-0.7.8.1) (new package)
gl-0.7.8.1 (via: gl-pal-0.1.0.0) (new package)
unix-compat-0.4.3.1 (via: fsnotify-0.2.1) (new package)
fsnotify-0.2.1 (via: gl-pal-0.1.0.0) (new package)
zlib-0.6.1.2 (via: JuicyPixels-3.2.8) (new package)
JuicyPixels-3.2.8 (via: gl-pal-0.1.0.0) (new package)
gl-pal-0.1.0.0 (new package)
cabal.exe: The following packages are likely to be broken by the reinstalls:
ghc-8.0.2
Use --force-reinstalls if you want to install anyway.