Build fails on arch linux: cabal: Could not resolve dependencies

[smu]

Installation fails under arch linux.

$cabal install --bindir=.
Resolving dependencies...
cabal: Could not resolve dependencies:
[__0] trying: tttool-1.8 (user goal)
[__1] next goal: base (dependency of tttool)
[__1] rejecting: base-4.11.1.0/installed-4.1... (conflict: tttool => base>=4.5
&& <4.11)
[__1] rejecting: 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)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: base, tttool
Note: when using a sandbox, all packages are required to have consistent
dependencies. Try reinstalling/unregistering the offending packages or
recreating the sandbox.

 cabal install --only-dependencies

leads to the same error message.

I have no experience with haskell. any ideas how to solve the problem with base? thanks!

[nomeata]

You seem to have a pretty new version of GHC. Let me update tttool to support that…

[nomeata]

Blocked on alpheccar/HPDF#21 unfortunately.

[raisken]

I saw two issues in HPDF. It works fine after fixing them.

1. in Graphics/PDF/Draw.hs you need to modifiy the code around "(x:xs) <- gets supplyNames" to something like this:

supplyName = do
x1 <- gets supplyNames
case x1 of
(x:xs) -> do
modifyStrict $ \s -> s {supplyNames = xs}
return x
[] -> error "Nothing to draw"

2. The other issue was in Graphics/PDF/Typesetting/Breaking.hs

change foldWithKey to foldrWithKey

Could you then update tttool? I'm running ghc 8.6.3. Thanks much.

[nomeata]

Thanks for the HPDF patches. I need to do something about this, but I am not sure how best to proceed in terms of packaging etc.. Probably include a patched copy of HPDF as a git subtree in the repository…