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Haskell in Nixpkgs/NixOS

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For discussions and questions about Haskell with Nix, cabal2nix and haskellPackages in nixpkgs | Current Docs: https://haskell4nix.readthedocs.io/ | More Nix: #community:nixos.org | More Haskell: #haskell-space:matrix.org147 Servers

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7 Sep 2025
@sternenseemann:systemli.orgsterni (he/him)can't believe we're on track to get this done in under a year19:36:22
@emilazy:matrix.orgemilyall I want for Christmas is someone to make Hadrian cross work20:20:27
@emilazy:matrix.orgemilyexcept not so quickly that I feel like I wasted all that time20:20:40
@alex:tunstall.xyzAlex At this point, would it be less effort to compile GHC with MicroHs?
(I haven't been trying in a while, need to revisit it when I get the time.)
20:21:21
@emilazy:matrix.orgemilyI doubt it, since I sorted the LLVM patches in a few days but AFAIK MicroHs is lacking several major type system extensions to even think about compiling GHC?20:22:23
@alex:tunstall.xyzAlex Last I checked, the main limitation was DataKinds being missing + a lot of GHC-specific code like the fast strings. 20:24:09
@alex:tunstall.xyzAlexI'm willing to rewrite the type checker if necessary, and the GHC problems can probably be fixed with a lot of tedious CPP.20:25:06
@nolduakali:matrix.orgAri Ade Supriyatna joined the room.20:26:56
@artem.types:matrix.orgArtemoften times, GHC HEAD can't be compiled with a GHC just out of the support window (last three releases or so). I'd expect it to be a non-trivial projecct to make MHS compile GHC..20:32:24
@artem.types:matrix.orgArtem* often times, GHC HEAD can't be compiled with a GHC just out of the support window (last three releases or so). I'd expect it to be a non-trivial project to make MHS compile GHC...20:32:37

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