Pulling from darcs zip file results in unpacking failure.

[locallycompact]

cabal2nix generates this expression from https://hub.darcs.net/darcs/darcs-screened/dist but that then does not unpack properly

Expression:

https://gitlab.horizon-haskell.net/package-sets/horizon-devtools/-/blob/d851e6e891726af219841af51fcb98dc7a747a28/pkgs/darcs.nix

Failure:

https://gitlab.horizon-haskell.net/package-sets/horizon-devtools/-/jobs/1138736

[sternenseemann]

Can you paste the log here? Seems to have disappeared.

[sternenseemann]

Ah, this is probably because stdenv only decides on the unpacker based on the file extension. nix-prefetch-url --unpack is a bit overzealous here. You can solve this with various approaches via overrides. Not sure how cabal2nix should deal with this issues if at all. I can't really think of a clean solution.