{ pkgs ? import ./nix/nixpkgs.nix, cf-preset ? [], sam-preset ? [], source ? false, document ? false }: with builtins; let version = "0.10"; depsToDhall = preset: pkgs.writeText "package.dhall" ( if length preset > 0 then '' { ${concatStringsSep "\n," (map (a: "`${a}` = ./${a}.dhall") preset)} } '' else "{=}" ); override = pkgs.runCommand "dhall-aws-cloudformation-override" {src = ./.;} '' mkdir -p $out cp -r $src/* $out chmod 600 $out/cloudformation/package.dhall chmod 600 $out/sam/package.dhall cp ${depsToDhall cf-preset} $out/cloudformation/package.dhall cp ${depsToDhall sam-preset} $out/sam/package.dhall ''; aws-cloudformation = {buildDhallPackage, Prelude, pkgs}: buildDhallPackage { name = "aws-cloudformation"; code = "${override}/package.dhall"; dependencies = [ Prelude ]; }; dhallOverlay = self: super: { aws-cloudformation = self.callPackage aws-cloudformation { }; }; overlay = self: super: { dhallPackages = super.dhallPackages.override (old: { overrides = self.lib.composeExtensions (old.overrides or (_: _: {})) dhallOverlay; }); }; in import pkgs.path { overlays = [ overlay ]; }