Configuring cairo-0.12.0...
setup.exe: The program pkg-config version >=0.9.0 is required but it could not
be found.
cabal: Error: some packages failed to install:
cairo-0.12.0 failed during the configure step. The exception was:
ExitFailure 1
so how can I get pkg-config on windows or how to install cairo then ?
Do you have the cairo development files installed? Recall this isn't the same as having a cairo dll! See the Windows section of their download page for binaries. Also, you can run cabal install -v for more verbosity in the error (which you should post if you're still stuck).
you need to add "C:\Program Files\Gtk+\bin" enclosed in double quotes to PATH system variable so that pkg-config becomes visible to windows, you have to have the gtk+ installed first of course ...
来源：https://stackoverflow.com/questions/5336865/cant-install-cairo-with-cabal-on-windows-how-to-get-pkg-config-on-win