Hi Ben, On Mon, Apr 27, 2020 at 12:32:19PM +0200, Ben Franksen wrote:
If I specify "cabal-version: 2.2" I get:
cabal build --enable-tests --disable-optimization --with-compiler=/opt/ghc/8.0.2/bin/ghc [...] setup: This package description follows version 2.2 of the Cabal specification. This tool only supports up to version 1.24.2.0.
Ah yeah, but see that's because you're running cabal-install 1.24. Like I said you need a more recent cabal-install but cabal-install-2.2 or 2.4 should build just fine even with ghc-8.0 so that's not really a problem for users usually.
The warning is okay, I get that in any case, but the last line is an error.
So this is in fact an error then, right? Cabal doesn't just try to carry on with a .cabal file it can't parse properly, since that would be very surprising.
The problem here seems to be that we have a custom Setup.hs.
I don't think that's related. The problem is that the cabal-install version is the upper bound for the `cabal-version:` you can build with it. If you want to build a package with cabal-version:2.2 you need at least cabal-install-2.2.*. --Daniel