67 lines
2.4 KiB
Nix
67 lines
2.4 KiB
Nix
{
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description = "haskell-template's description";
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inputs = {
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nixpkgs.url = "github:nixos/nixpkgs/46821ea01c8f54d2a20f5a503809abfc605269d7";
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flake-utils.url = "github:numtide/flake-utils";
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flake-compat = {
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url = "github:edolstra/flake-compat";
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flake = false;
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};
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};
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outputs = inputs@{ self, nixpkgs, flake-utils, ... }:
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flake-utils.lib.eachSystem [ "x86_64-linux" "x86_64-darwin" "aarch64-darwin" ] (system:
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let
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overlays = [ ];
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pkgs =
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import nixpkgs { inherit system overlays; config.allowBroken = true; };
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# https://github.com/NixOS/nixpkgs/issues/140774#issuecomment-976899227
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m1MacHsBuildTools =
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pkgs.haskellPackages.override {
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overrides = self: super:
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let
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workaround140774 = hpkg: with pkgs.haskell.lib;
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overrideCabal hpkg (drv: {
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enableSeparateBinOutput = false;
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});
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in
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{
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ghcid = workaround140774 super.ghcid;
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ormolu = workaround140774 super.ormolu;
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};
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};
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project = returnShellEnv:
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pkgs.haskellPackages.developPackage {
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inherit returnShellEnv;
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name = "haskell-template";
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root = ./.;
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withHoogle = false;
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overrides = self: super: with pkgs.haskell.lib; {
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# Use callCabal2nix to override Haskell dependencies here
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# cf. https://tek.brick.do/K3VXJd8mEKO7
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# Example:
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# > NanoID = self.callCabal2nix "NanoID" inputs.NanoID { };
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# Assumes that you have the 'NanoID' flake input defined.
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};
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modifier = drv:
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pkgs.haskell.lib.addBuildTools drv
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(with (if system == "aarch64-darwin"
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then m1MacHsBuildTools
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else pkgs.haskellPackages); [
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# Specify your build/dev dependencies here.
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cabal-fmt
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cabal-install
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ghcid
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haskell-language-server
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ormolu
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pkgs.nixpkgs-fmt
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]);
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};
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in
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{
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# Used by `nix build` & `nix run` (prod exe)
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defaultPackage = project false;
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# Used by `nix develop` (dev shell)
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devShell = project true;
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});
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}
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