Unbreak the build on AppVeyor.

[23Skidoo]

Take 2.

[grayjay]

@23Skidoo Thanks for uploading the binary. I'm trying to update my previous branch that downloaded GHC and cabal separately: https://github.com/grayjay/cabal/tree/appveyor-newer-ghc-and-cabal

[23Skidoo]

Apparently when you run 7z x cabal.tar.gz it unpacks only the cabal.tar file. Uploaded a zip archive instead.

[grayjay]

Now it's failing to download the packages: https://ci.appveyor.com/project/grayjay/cabal/build/1.0.73

[23Skidoo]

@grayjay Maybe the problem is that AppVeyor requires a 64-bit binary? The one I uploaded is 32-bit, but the one that comes with Haskell Platform is 64-bit (since it's from HaskellPlatform-2014.2.0.0-x86_64-setup.exe).

[23Skidoo]

Something funky is going on:

ansi-terminal-0.6.2.3 failed while downloading the package. The exception was:
DeleteFile
"C:\\Users\\appveyor\\AppData\\Roaming\\cabal\\packages\\hackage.haskell.org\\ansi-terminal\\0.6.2.3\\curl-headers2812.txt":
permission denied (The process cannot access the file because it is being used
by another process.)

[grayjay]

I don't know. I looked back at the other builds that I tried, and I think that all of the cabal binaries that failed to download the index were 32-bit.

[23Skidoo]

OK, I'll build a 64-bit binary then.

[23Skidoo]

The 64-bit binary seems to be able to download packages. Yay!

[grayjay]

Great!

[23Skidoo]

So now it fails when trying to configure network:

cabal: Entering directory 'C:\Users\appveyor\AppData\Local\Temp\1\cabal-tmp-2404\network-2.6.2.1'
Configuring network-2.6.2.1...
configure: WARNING: unrecognized options: --with-compiler
checking build system type... x86_64-pc-msys
checking host system type... x86_64-pc-msys
checking for gcc... C:\Program Files\Haskell Platform\2014.2.0.0\mingw\bin\gcc.exe
checking whether the C compiler works... no
configure: error: in `/tmp/cabal-tmp-2404/network-2.6.2.1':
configure: error: C compiler cannot create executables
See `config.log' for more details
cabal: Leaving directory 'C:\Users\appveyor\AppData\Local\Temp\1\cabal-tmp-2404\network-2.6.2.1'
Failed to install network-2.6.2.1

[grayjay]

network works with GHC 7.10.3: https://ci.appveyor.com/project/grayjay/cabal

[23Skidoo]

Thanks, changed the script to use GHC 7.10.3 from Chocolatey.

[23Skidoo]

And it finally passed!

[grayjay]

I can reproduce the network configure error locally with cabal-install-1.24.0.0, but not cabal-install-1.22.6.0. I think it can't handle the spaces in the path to gcc.

[23Skidoo]

That's #1634. So it's still broken? Maybe we need to add a workaround.

[23Skidoo]

Filed an issue: #3185.

[grayjay]

Thanks. It looks like 1.22 was able to configure network because it used --with-gcc instead of CC. The configure script ignored --with-gcc and found gcc on the path.