Update svgcairo to work with librsvg version 2.51.0 and greater

[dalpd]

librsvg in nixpkgs was updated to version 2.52.0 recently which broke the svgcairo build because one of the headers is renamed in version 2.51.0.

This bumps the lower boundry for librsvg and updates the header's path.

[Bodigrim]

Hit this today. Could someone please merge and make a release? @hamishmack?

[ocharles]

I'm able to merge this, but I don't have Hackage upload rights. @hamishmack are you able to grant me those? Then I can take care of this.

[Bodigrim]

@hamishmack just a reminder about this.

[zarakshR]

I can confirm that this issue affects me

[Bodigrim]

@hamishmack could you please possibly merge this and/or give @ocharles Hackage upload rights?

[ulidtko]

Ping @hamishmack... Three things are needed to get master to build:

• this patch Update svgcairo to work with librsvg version 2.51.0 and greater #13
• cpp-options patch Correct cpp-options for both linux/darwin #12
• --allow-newer=svgcairo:Cabal

Please merge!

[ulidtko]

FWIW, I've combined the 3 patches — https://github.com/zoominsoftware/svgcairo/tree/maint/patches

So in stack.yaml, that'd be

extra-deps:
  ...

  # ghc-vis & its deps; svgcairo vendored, due to https://github.com/gtk2hs/svgcairo/pull/13
  - ghc-vis-0.9.3.1@sha256:8bb5d717db339ea4cabc63f25f45114a3d5c3e7a07da85d6ab9b08b58b8a485f,2770
  - ghc-heap-view-0.6.4.1@sha256:3db52b253513cf086fc80c878efc5582116323307eda41e066de908cd33215ec,3270
  - xdot-0.3.0.5@sha256:61450e3165cf8f187797304e84010ab1263dc055d7cdfdb84b5ea5508a68f527,2197
  - github: zoominsoftware/svgcairo
    commit: 1852132e939fc953b61b55e6752b20b751fbae56

And in cabal.project,

source-repository-package
  type: git
  location: https://github.com/zoominsoftware/svgcairo.git
  tag: 1852132e939fc953b61b55e6752b20b751fbae56

Again: this includes all 3 fixes from the previous comment ☝️ and installs as-is (in my case, as dependency of ghc-vis), modulo the native dependencies: librsvg, libgtk3, graphviz, etc.

Might be useful. Until maintainers merge these here in the origin repo, anyway.

[Lysxia]

@hamishmack this would be nice to fix.

ping @dmwit who's also listed on Hackage as a maintainer of svgcairo. Can you give upload rights to ocharles?

[dmwit]

Not sure if I'm overstepping my bounds or whatever, but I've added @ocharles to the Hackage maintainer list.

[hyper-analysis]

The maintainers are gone. Who can move forward ?

[ulidtko]

This is such a nicely small package... 500 lines everything.

I can push it forward @PhilosophicalWarfare. Basically, already did (but in a fork).

All that's left is to publish a version.

Ping @hamishmack once more, as he was active back in March this year... Hamish, do you accept maintainership volunteers?

Also ping @GuillaumedeVolpiano @wenkokke @wavewave -- if any of you know how to reach gtk2hs people, please tell us! I've checked the gtk2hs mailman lists on SourceForge, those don't seem to be getting responses since ~2020. Didn't have much luck on IRC either.

This build breakage is a simple matter 🤕 has all the fixes written, tested and ready -- just need to be merged & released. Quite a few people are affected... please see this thread.