.cabal: Not found in archive · haskell-flake

hey everyone, just starting out with haskell and trying to make a toy project with hyperbole. When override the package version with haskellProjects.default.packages.hyperbole.source = "0.5.0"; I get following error:

> nix develop
warning: Git tree '/home/a/projects/haskell-exercises' is dirty
error: builder for '/nix/store/qb5jz3a8jn03khibmfjxp8sq8mx6d98b-all-cabal-hashes-component-hyperbole-0.5.0.drv' failed with exit code 2;
       last 3 log lines:
       > tar: */hyperbole/0.5.0/hyperbole.json: Not found in archive
       > tar: */hyperbole/0.5.0/hyperbole.cabal: Not found in archive
       > tar: Exiting with failure status due to previous errors
       For full logs, run:
         nix log /nix/store/qb5jz3a8jn03khibmfjxp8sq8mx6d98b-all-cabal-hashes-component-hyperbole-0.5.0.drv
error:
       … while calling the 'derivationStrict' builtin
         at <nix/derivation-internal.nix>:37:12:
           36|
           37|   strict = derivationStrict drvAttrs;
             |            ^
           38|

       … while evaluating derivation 'ghc-shell-for-packages-0'
         whose name attribute is located at /nix/store/ybmnblw90230yl4p0l18ghwx9ry597bz-source/pkgs/stdenv/generic/make-derivation.nix:544:13

       … while evaluating attribute 'NIX_GHC' of derivation 'ghc-shell-for-packages-0'

       (stack trace truncated; use '--show-trace' to show the full, detailed trace)

       error: 1 dependencies of derivation '/nix/store/z8nd9zdv0za59irx46mnv5swvsydjpqg-cabal2nix-hyperbole-0.5.0.drv' failed to build

Pavel Anpin (Oct 06 2025 at 12:35):

I tried setting it up via flake input, but that fails due to a broken test in the dependency flake input atomic-css. Yikes!

Pavel Anpin (Oct 06 2025 at 16:03):

ok I figured out how to overcome this, run cabal2nix for a package and then use that instead of overriding the source number
hyperbole = { super, ...}: { custom = _: super.callPackage ./hyperbole.nix {}; };

Shivaraj B H (Oct 07 2025 at 08:37):

To fix the error, you will have to update the all-cabal-hashes revision to latest. You can do that by either updating nixpkgs (assuming someone has updated it upstream) or DIY:

# In haskellProjects.<name>
{
   basePackages = pkgs.haskellPackages.override {
     all-cabal-hashes = builtins.fetchurl { url = "https://github.com/commercialhaskell/all-cabal-hashes/archive/LATEST-COMMIT-HERE.tar.gz"; sha256 = lib.fakeHash; };
   };
 }

Pavel Anpin (Oct 07 2025 at 09:31):

brilliant! I knew I was missing something out. Quick search pointed on updating cabal, but I went into fetching derivations manually. Thanks!

Stream: haskell-flake

Topic: .cabal: Not found in archive

Pavel Anpin (Oct 06 2025 at 12:33):

Pavel Anpin (Oct 06 2025 at 12:35):

Pavel Anpin (Oct 06 2025 at 16:03):

Shivaraj B H (Oct 07 2025 at 08:37):

Pavel Anpin (Oct 07 2025 at 09:31):

Srid (Oct 07 2025 at 21:51):