!RbXGJhHMsnQcNIDFWN:nixos.org

Haskell in Nixpkgs/NixOS

690 Members
For discussions and questions about Haskell with Nix, cabal2nix and haskellPackages in nixpkgs | Current Docs: https://nixos.org/manual/nixpkgs/unstable/#haskell | Current PR: https://github.com/nixos/nixpkgs/pulls?q=is%3Apr+is%3Aopen+head%3Ahaskell-updates | Maintainer Docs: https://github.com/NixOS/nixpkgs/blob/haskell-updates/pkgs/development/haskell-modules/HACKING.md | More Nix: #community:nixos.org | More Haskell: #haskell-space:matrix.org | Merger Schedule: https://cloud.maralorn.de/apps/calendar/p/H6migHmKX7xHoTFa/dayGridMonth/now | Join #haskell.nix:libera.chat for question about the alternative haskell.nix infrastructure137 Servers

You have reached the beginning of time (for this room).

SenderMessageTime
22 Oct 2025
@magic_rb:matrix.redalder.orgmagic_rb

hm, im getting this from nixpkgs:

       > [55 of 73] Compiling JavaScript.Web.Canvas.ImageData ( JavaScript/Web/Canvas/ImageData.hs, dist/build/JavaScript/Web/Canvas/ImageData.o )
       > [56 of 73] Compiling JavaScript.Web.Canvas ( JavaScript/Web/Canvas.hs, dist/build/JavaScript/Web/Canvas.o )ipt/Web/Canvas/Internal.o )
       > [57 of 73] Compiling JavaScript.Web.Canvas.TextMetrics ( JavaScript/Web/Canvas/TextMetrics.hs, dist/build/JavaScript/Web/Canvas/TextMetrics.o )
       > [58 of 73] Compiling JavaScript.Web.CloseEvent.Internal ( JavaScript/Web/CloseEvent/Internal.hs, dist/build/JavaScript/Web/CloseEvent/Internal.o )
       > [59 of 73] Compiling JavaScript.Web.CloseEvent ( JavaScript/Web/CloseEvent.hs, dist/build/JavaScript/Web/CloseEvent.o )ionFrame.o )
       > [60 of 73] Compiling JavaScript.Web.ErrorEvent.Internal ( JavaScript/Web/ErrorEvent/Internal.hs, dist/build/JavaScript/Web/ErrorEvent/Internal.o )
       > [61 of 73] Compiling JavaScript.Web.ErrorEvent ( JavaScript/Web/ErrorEvent.hs, dist/build/JavaScript/Web/ErrorEvent.o )
       > [62 of 73] Compiling JavaScript.Web.File ( JavaScript/Web/File.hs, dist/build/JavaScript/Web/File.o )1;
       > [63 of 73] Compiling JavaScript.Web.History ( JavaScript/Web/History.hs, dist/build/JavaScript/Web/History.o )
       > [64 of 73] Compiling JavaScript.Web.Location ( JavaScript/Web/Location.hs, dist/build/JavaScript/Web/Location.o )
       > [65 of 73] Compiling JavaScript.Web.MessageEvent.Internal ( JavaScript/Web/MessageEvent/Internal.hs, dist/build/JavaScript/Web/MessageEvent/Internal.o )
       > [66 of 73] Compiling JavaScript.Web.MessageEvent ( JavaScript/Web/MessageEvent.hs, dist/build/JavaScript/Web/MessageEvent.o )
       > [67 of 73] Compiling JavaScript.Web.Performance ( JavaScript/Web/Performance.hs, dist/build/JavaScript/Web/Performance.o )
       > [68 of 73] Compiling JavaScript.Web.Storage.Internal ( JavaScript/Web/Storage/Internal.hs, dist/build/JavaScript/Web/Storage/Internal.o )
       > [69 of 73] Compiling JavaScript.Web.Storage ( JavaScript/Web/Storage.hs, dist/build/JavaScript/Web/Storage.o )
       > [70 of 73] Compiling JavaScript.Web.StorageEvent ( JavaScript/Web/StorageEvent.hs, dist/build/JavaScript/Web/StorageEvent.o )
       > [71 of 73] Compiling JavaScript.Web.WebSocket ( JavaScript/Web/WebSocket.hs, dist/build/JavaScript/Web/WebSocket.o )
       > [72 of 73] Compiling JavaScript.Web.Worker ( JavaScript/Web/Worker.hs, dist/build/JavaScript/Web/Worker.o )
       > [73 of 73] Compiling JavaScript.Web.XMLHttpRequest ( JavaScript/Web/XMLHttpRequest.hs, dist/build/JavaScript/Web/XMLHttpRequest.o )
       > javascript-unknown-ghcjs-ghc-9.10.3: JavaScript C pre-processor: could not execute:
       For full logs, run:
         nix log /nix/store/b9y291nv2niv71aggzy6l5gnhvn6qkdx-ghcjs-base-0.8.0.4.drv
error: 1 dependencies of derivation '/nix/store/fpfwgskiyns3lbfa23b98mzmnknzvy0s-jsaddle-0.9.9.3.drv' failed to build
error: 1 dependencies of derivation '/nix/store/fwfk823qa6ghsxy3ba95k9a06ij4w4m5-miso-1.8.7.0.drv' failed to build

weird

20:24:03
@magic_rb:matrix.redalder.orgmagic_rbits an interesting failure, very, not helpful20:24:57
23 Oct 2025
@alexfmpe:matrix.orgalexfmpemight want to try 9.12 from recent nixpkgs17:23:06
@alexfmpe:matrix.orgalexfmpepkgsCross.ghcjs.haskell.packages.ghc912 has cached miso and reflex-dom, which means a lot of other packages are also cached by being their deps17:23:38
@alexfmpe:matrix.orgalexfmpe I get nix-build -A pkgsCross.ghcjs.haskell.packages.ghc912.ghcjs-base from cache on https://github.com/NixOS/nixpkgs/commit/c90b7f75f4e9d4dffcdc30261f565da1e261d468 which is just a few days old 17:26:32
@alexfmpe:matrix.orgalexfmpe magic_rb: ^ 17:26:42
@dandart:matrix.orgUraraka ~ OchacoI kind of gave up with ghcjs when it started giving cryptic errors so I moved my stack over to wasm17:27:18
@alexfmpe:matrix.orgalexfmpejs backend is recent enough I wouldn't bother much with anything older than 9.12 17:27:21
@alexfmpe:matrix.orgalexfmpebut yeah, wasm is very much an option17:27:59
@alexfmpe:matrix.orgalexfmpefunnily enough eval of this is broken on master and on present haskell-updates, looks like something got merged very recently 17:28:51
@alexfmpe:matrix.orgalexfmpe 
$ nix-build -A pkgsCross.ghcjs.haskell.packages.ghc912.hello      
error: no C compiler provided for this platform
17:30:22
@alexfmpe:matrix.orgalexfmpeyay17:30:26
@alexfmpe:matrix.orgalexfmpebisect was pretty quick: this broke eval: https://github.com/NixOS/nixpkgs/pull/36659317:39:01
@alexfmpe:matrix.orgalexfmpe somehow we're getting a
ghcjs -> emscripten -> openjdk -> python -> openssl
that ends up trying to eval stdenv.cc.isGnu that then throws because there's no c compiler 		17:51:32
@magic_rb:matrix.redalder.orgmagic_rb
In reply to @alexfmpe:matrix.org
js backend is recent enough I wouldn't bother much with anything older than 9.12
mhm i actully figured it out, but i had to apply https://gitlab.haskell.org/ghc/ghc/-/merge_requests/14882 but using sed 		17:54:57
@magic_rb:matrix.redalder.orgmagic_rb had to add both HEAP8 and HEAPU8 17:55:12
@alexfmpe:matrix.orgalexfmpeah ok, keep in mind I 'backported' that last week17:58:28

Show newer messages

Back to Room ListRoom Version: 6