easy-dhall-nix/dhall-json-simple.nix

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{ pkgs ? import <nixpkgs> {} }:
pkgs.stdenv.mkDerivation rec {
name = "dhall-json-simple";
src = if pkgs.stdenv.isDarwin
then pkgs.fetchurl {
url = "https://github.com/dhall-lang/dhall-haskell/releases/download/1.25.0/dhall-json-1.4.0-x86_64-macos.tar.bz2";
sha256 = "0427xy59mzyrz978l36x0ha610bpckg14m3svkvg8hipvblgh19r";
}
else pkgs.fetchurl {
url = "https://github.com/dhall-lang/dhall-haskell/releases/download/1.25.0/dhall-json-1.4.0-x86_64-linux.tar.bz2";
sha256 = "14apqq0dj3lmm8yccygf8bb27scxjfkjkmr8zgnwb98znr51gfwn";
};
installPhase = ''
mkdir -p $out/bin
DHALL_TO_JSON=$out/bin/dhall-to-json
install -D -m555 -T dhall-to-json $DHALL_TO_JSON
mkdir -p $out/etc/bash_completion.d/
$DHALL_TO_JSON --bash-completion-script $DHALL_TO_JSON > $out/etc/bash_completion.d/dhall-to-json-completion.bash
'';
}