JamesM (Jul 03 2024 at 12:27): JamesM (Jul 03 2024 at 12:27):My builds are failing and it seems to be because cabal builds multiple packages in parallel and runs out of memory. I've had this issue before when using Docker and solved it by passing -j1 to cabal build. How do I do the same using haskell-flake?
I tried sprinkling extraBuildFlags with "-j1" everywhere to see if it'd have an effect, but it seems it does not. I'm new to nix and haskell-flake so I'm sure I'm using it incorrectly.
How would I pass a "global" cabal build flag like this?
Here's my flake:
{
inputs = {
nixpkgs.url = "github:nixos//nixpkgs/00d80d13810dbfea8ab4ed1009b09100cca86ba8";
flake-parts.url = "github:hercules-ci/flake-parts";
haskell-flake.url = "github:srid/haskell-flake";
};
outputs = inputs@{ self, nixpkgs, flake-parts, ... }:
flake-parts.lib.mkFlake { inherit inputs; } {
systems = nixpkgs.lib.systems.flakeExposed;
imports = [ inputs.haskell-flake.flakeModule ];
perSystem = { self', system, lib, config, pkgs, ... }: {
haskellProjects.default = {
basePackages = pkgs.haskell.packages.ghc982;
settings = {
all.extraBuildFlags = [ "-j1" ];
overall.extraBuildFlags = [ "-j1" ];
};
devShell = {
hlsCheck.enable = false;
};
defaults.settings.default = {
check = false;
extraBuildFlags = [ "-j1" ];
};
autoWire = [ "packages" ];
};
packages.default = self'.packages.overall;
devShells.default = pkgs.mkShell {
name = "Haskell devShell";
inputsFrom = [
config.haskellProjects.default.outputs.devShell
];
nativeBuildInputs = with pkgs; [
];
};
};
};
}
settings = {
all.extraBuildFlags = [ "-j1" ];
overall.extraBuildFlags = [ "-j1" ];
};
What's all and overall? Are you using latest haskell-flake?
Srid (Jul 03 2024 at 14:28): defaults.settings.default = {
check = false;
extraBuildFlags = [ "-j1" ];
};
In recent haskell-flake, this should be defaults.settings.local
Last updated: Jan 18 2025 at 04:45 UTC