/dhall-aws-cloudformation/default.nix
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{ 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 ]; }