Can't build nofib

[Rodrigo Mesquita]

From the error message it looks like you’re using ghc-9.6(and base 4.18) while nofib requires base < 4.17.
I’d say as a temporary workaround you can likely run your invocation additionally with —allow-newer, and hope that doesn’t break. Otherwise you could downgrade to 9.4 or bump the version manually in the cabal file of nofib?

Rodrigo

> On 12 Jul 2023, at 12:38, Simon Peyton Jones <simon.peytonjones at gmail.com> wrote:
> 
> Friends
> 
> With a clean HEAD I can't build nofib.  See below.  What should I do?
> 
> Thanks
> 
> Simon
> 
> (cd nofib; cabal v2-run -- nofib-run --compiler=`pwd`/../_build/stage1/bin/ghc --output=`date -I`)
> Resolving dependencies...
> Error: cabal: Could not resolve dependencies:
> [__0] trying: nofib-0.1.0.0 (user goal)
> [__1] next goal: base (dependency of nofib)
> [__1] rejecting: base-4.18.0.0/installed-4.18.0.0 (conflict: nofib =>
> base>=4.5 && <4.17)
> [__1] skipping: base-4.18.0.0, base-4.17.1.0, base-4.17.0.0 (has the same
> characteristics that caused the previous version to fail: excluded by
> constraint '>=4.5 && <4.17' from 'nofib')
> [__1] rejecting: base-4.16.4.0, base-4.16.3.0, base-4.16.2.0, base-4.16.1.0,
> base-4.16.0.0, base-4.15.1.0, base-4.15.0.0, base-4.14.3.0, base-4.14.2.0,
> base-4.14.1.0, base-4.14.0.0, base-4.13.0.0, base-4.12.0.0, base-4.11.1.0,
> base-4.11.0.0, base-4.10.1.0, base-4.10.0.0, base-4.9.1.0, base-4.9.0.0,
> base-4.8.2.0, base-4.8.1.0, base-4.8.0.0, base-4.7.0.2, base-4.7.0.1,
> base-4.7.0.0, base-4.6.0.1, base-4.6.0.0, base-4.5.1.0, base-4.5.0.0,
> base-4.4.1.0, base-4.4.0.0, base-4.3.1.0, base-4.3.0.0, base-4.2.0.2,
> base-4.2.0.1, base-4.2.0.0, base-4.1.0.0, base-4.0.0.0, base-3.0.3.2,
> base-3.0.3.1 (constraint from non-upgradeable package requires installed
> instance)
> [__1] fail (backjumping, conflict set: base, nofib)
> After searching the rest of the dependency tree exhaustively, these were the
> goals I've had most trouble fulfilling: base, nofib
> 
> make: *** [/home/simonpj/code/Makefile-spj:39: nofib] Error 1
> 
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