I'm trying to fix a broken package named ffmpeg-light. Here is what I have so far:

ffmpeg-light = lib.pipe hprev.ffmpeg-light [
  unmarkBroken
  doJailbreak
  (addSetupDepend prev.ffmpeg-full.dev)
  (drv: drv.overrideAttrs (attrs: { dontWrapQtApps = true; }))
];

However, the ffmpeg libs are still not found:

       > Error: Setup: Missing dependencies on foreign libraries:
       > * Missing (or bad) C libraries: avutil, avformat, avcodec, swscale, avdevice,
       > swresample

I'm trying to fix a broken package named ffmpeg-light. Here is what I have so far:

ffmpeg-light = lib.pipe hprev.ffmpeg-light [
  unmarkBroken
  doJailbreak
  (addSetupDepend prev.ffmpeg-full)
  (addPkgconfigDepend prev.ffmpeg-full.dev)
  (drv: drv.overrideAttrs (attrs: { dontWrapQtApps = true; }))
];

However, the ffmpeg libs are still not found:

       > Error: Setup: Missing dependencies on foreign libraries:
       > * Missing (or bad) C libraries: avutil, avformat, avcodec, swscale, avdevice,
       > swresample

Here's what the cabal wants:

  pkgconfig-depends:   libavutil, libavformat, libavcodec, libswscale, libavdevice,
                       libswresample

Here's what ffmpeg-full.dev has:

 /nix/store/7v77gvdjk8410qzrpkhymihgijf5s990-ffmpeg-full-7.1.1-dev/lib
└──  pkgconfig
    ├──  libavcodec.pc
    ├──  libavdevice.pc
    ├──  libavfilter.pc
    ├──  libavformat.pc
    ├──  libavutil.pc
    ├──  libpostproc.pc
    ├──  libswresample.pc
    └──  libswscale.pc

In reply to @sasha:the-apothecary.club
Heya, a while ago I wrote a program that uses the punycode package, which is marked as broken in nixpkgs. I'm trying to figure out why but have gotten nowhere, any suggestions?

In reply to @maralorn:maralorn.de
Have you looked for a "broken.yaml" file in nixpkgs and read the line in the corresponding comment?

Hey all! I'm routinely getting strange "missing dependencies" errors when trying to build with cabal on my NixOS machine. Never happens on non-NixOS. I must be missing something? E.g.:

Failed to build unix-2.8.6.0. The failure occurred during the configure step.
Build log (
/home/artem/.cache/cabal/logs/ghc-9.10.1/unix-2.8.6.0-7e70e93a018fa3cd3eeee6c9345819b76e60434f053c8d02acdb7ab743ba3a2a.log
):
Configuring unix-2.8.6.0...
Error: [Cabal-8010]
Encountered missing or private dependencies:
    tasty, tasty-hunit, tasty-quickcheck

happens to various dependencies when building various packages...

In reply to @artem.types:matrix.org

Hey all! I'm routinely getting strange "missing dependencies" errors when trying to build with cabal on my NixOS machine. Never happens on non-NixOS. I must be missing something? E.g.:

Failed to build unix-2.8.6.0. The failure occurred during the configure step.
Build log (
/home/artem/.cache/cabal/logs/ghc-9.10.1/unix-2.8.6.0-7e70e93a018fa3cd3eeee6c9345819b76e60434f053c8d02acdb7ab743ba3a2a.log
):
Configuring unix-2.8.6.0...
Error: [Cabal-8010]
Encountered missing or private dependencies:
    tasty, tasty-hunit, tasty-quickcheck

happens to various dependencies when building various packages...

Are you trying to override the unix package?

Boot libraries have special handling and cannot be overridden in the usual way.
For example:

nix-repl> haskellPackages.unix
null

In reply to @artem.types:matrix.org
@alex:tunstall.xyz: I'm building with cabal, not nix, so, I'm not sure I understand your question but no, I'm not doing anything special I just do `cabal build`

If you don't understand the question, the answer is "probably not".

Then you might have version constraints in your package that cause Cabal to reject the version installed with the GHC provided by Nix.
Can you try deleting the local copy of the package index? (I can't remember where in ~ cabal puts it.)