a simple example of hammock http client with Cats Effect IO and Apache HttpComponents Client

SimpleMain.scala

package qiita_sample1

import cats.effect.{ExitCode, IO, IOApp}
import cats.free.Free
import hammock._
import hammock.apache.ApacheInterpreter

object SimpleMain extends IOApp {
  val program: Free[HttpF, HttpResponse] = Hammock
    .request(Method.GET, uri"http://httpbin.org/get", Map())

  implicit val interpreter: InterpTrans[IO] = ApacheInterpreter[IO]

  def run(args: List[String]): IO[ExitCode] = for {
    res <- program.exec[IO]
    _   <- IO(println(res.entity))
  } yield ExitCode.Success
}
// ---- build.sbt ----
//name := "hammock_test"
//
//version := "0.1"
//
//scalaVersion := "2.12.8"
//
//val hammockVer = "0.9.0"
//val circeVer   = "0.10.0"
//
//scalacOptions ++= Seq(
//  "-encoding", "utf8",
//  "-Xfatal-warnings",
//  "-Ypartial-unification",
//  "-deprecation",
//  "-unchecked",
//  "-language:implicitConversions",
//  "-language:higherKinds",
//  "-language:existentials",
//  "-language:postfixOps"
//)
//libraryDependencies ++= Seq(
//  "com.pepegar" %% "hammock-core",
//  "com.pepegar" %% "hammock-circe",
//  "com.pepegar" %% "hammock-apache-http",
//  "com.pepegar" %% "hammock-asynchttpclient",
//  "com.pepegar" %% "hammock-akka-http"
//).map(_ % hammockVer) ++ Seq(
//  "io.circe" %% "circe-core",
//  "io.circe" %% "circe-generic",
//  "io.circe" %% "circe-parser"
//).map(_ % circeVer) ++ Seq(
//  "io.monix" %% "monix" % "3.0.0-RC2",
//  "io.frees" %% "iota-core"  % "0.3.10"
//)