What needs to be done to have ghc-vis running on newest GHC?

[EncodePanda]

@def- what work do you think is needed to get this project up and running again?

[EncodePanda]

In other words, how can we help? :)

[def-]

Since we are working with GHC internals ghc-vis and ghc-heap-view are prone to breaking often. I'll try to upgrade the dependencies in ghc-heap-view and ghc-vis and check where it fails. This should help for ghc-heap-view: https://github.com/nomeata/ghc-heap-view/pull/36

[def-]

My Haskell foo is a bit rusty, is there an easy way to test cabal install . with the (unreleased) ghc-heap-view 0.6.3?

[Anton-Latukha]

Haskell-foo differs from Cabal-foo.

This should help: https://github.com/haskell-nix/hnix/commit/06b0fca9fd607eb2e995f003424e797a41ffa5b7#diff-b8ed06757045fac949c89f2139a862498ad2b6d1f82c61a31e7c91d6cf0eaa70

There hnix was patched so it would build cryptohash-sha512 dependency from particular git source.

[def-]

Now that ghc-heap-view is updated, I noticed one further dependency problem: https://github.com/gtk2hs/gtk2hs/issues/309

[jwaldmann]

also, https://github.com/gtk2hs/svgcairo/issues/14 ?

[def-]

Haven't gotten that far

[def-]

I have tried switching to gi-cairo instead of svgcairo. Now I'm running into the next problem:

Failed to build hashtables-1.3.1.
Build log (
/home/deen/.cabal/logs/ghc-9.0.2/hashtables-1.3.1-b18534b8e35d69179499dfbf94fca581c20ec0d1aec725813e429075202373a7.log
):
Configuring library for hashtables-1.3.1..
Preprocessing library for hashtables-1.3.1..
Building library for hashtables-1.3.1..
[ 1 of 12] Compiling Data.HashTable.Class ( src/Data/HashTable/Class.hs, dist/build/Data/HashTable/Class.o, dist/build/Data/HashTable/Class.dyn_o )

src/Data/HashTable/Class.hs:54:1: error:
    Could not find module ‘Data.Hashable’
    There are files missing in the ‘hashable-1.4.1.0’ package,
    try running 'ghc-pkg check'.
    Use -v (or `:set -v` in ghci) to see a list of the files searched for.
   |
54 | import           Data.Hashable
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
cabal: Failed to build hashtables-1.3.1 (which is required by ghc-vis-0.9.2).
See the build log above for details.

This seems to be an Arch Linux problem, I'm now trying with cabal build --ghc-options=-dynamic

[def-]

Failed to build haskell-gi-0.26.2. The failure occurred during the configure
step.
Build log (
/home/deen/.cabal/logs/ghc-9.0.2/haskell-gi-0.26.2-536188c901579b27a3ccfb812769db11726ed1d9d0076d1cae7e9cdf0e0f1a1f.log
):
[1 of 1] Compiling Main             ( /home/deen/git/ghc-vis/dist-newstyle/tmp/src-1938273/haskell-gi-0.26.2/dist/setup/setup.hs, /home/deen/git/ghc-vis/dist-newstyle/tmp/src-1938273/haskell-gi-0.26.2/dist/setup/Main.o )
Linking /home/deen/git/ghc-vis/dist-newstyle/tmp/src-1938273/haskell-gi-0.26.2/dist/setup/setup ...
Configuring haskell-gi-0.26.2...
setup: The pkg-config package 'gobject-introspection-1.0' version >=1.32 is
required but it could not be found.

cabal: Failed to build haskell-gi-0.26.2 (which is required by ghc-vis-0.9.2).
See the build log above for details.

Edit: Installed extra/gobject-introspection Edit2: gi-cairo doesn't seem to contain everything we require, so this doesn't work.

[slyfox3]

Edit2: gi-cairo doesn't seem to contain everything we require, so this doesn't work.

What is missing? Does it make sense to create an issue there to accommodate our need?

[def-]

I didn't see anything related to svgcairo