From a8d5a2c4c9d889e7de4d9fcb6c0a95753e9792f5 Mon Sep 17 00:00:00 2001
From: Alexandre Archambault <alexandre.archambault@gmail.com>
Date: Thu, 14 Jan 2016 01:05:36 +0100
Subject: [PATCH] Accept absent checksums by default

SHA-1 still checked first if present
---
 cache/src/main/scala/coursier/Cache.scala | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/cache/src/main/scala/coursier/Cache.scala b/cache/src/main/scala/coursier/Cache.scala
index 7448fb091..121f4416d 100644
--- a/cache/src/main/scala/coursier/Cache.scala
+++ b/cache/src/main/scala/coursier/Cache.scala
@@ -16,6 +16,9 @@ import java.io.{ Serializable => _, _ }
 
 object Cache {
 
+  // Check SHA-1 if available, else be fine with no checksum
+  val defaultChecksums = Seq(Some("SHA-1"), None)
+
   private def withLocal(artifact: Artifact, cache: Seq[(String, File)]): Artifact = {
     def local(url: String) =
       if (url.startsWith("file:///"))
@@ -398,7 +401,7 @@ object Cache {
     artifact: Artifact,
     cache: Seq[(String, File)] = default,
     cachePolicy: CachePolicy = CachePolicy.FetchMissing,
-    checksums: Seq[Option[String]] = Seq(Some("SHA-1")),
+    checksums: Seq[Option[String]] = defaultChecksums,
     logger: Option[Logger] = None,
     pool: ExecutorService = defaultPool
   ): EitherT[Task, FileError, File] = {
@@ -449,7 +452,7 @@ object Cache {
   def fetch(
     cache: Seq[(String, File)] = default,
     cachePolicy: CachePolicy = CachePolicy.FetchMissing,
-    checksums: Seq[Option[String]] = Seq(Some("SHA-1")),
+    checksums: Seq[Option[String]] = defaultChecksums,
     logger: Option[Logger] = None,
     pool: ExecutorService = defaultPool
   ): Fetch.Content[Task] = {