diff --git a/cli/src/main/scala-2.11/coursier/cli/Coursier.scala b/cli/src/main/scala-2.11/coursier/cli/Coursier.scala
index d1a8af958..6f9eaec65 100644
--- a/cli/src/main/scala-2.11/coursier/cli/Coursier.scala
+++ b/cli/src/main/scala-2.11/coursier/cli/Coursier.scala
@@ -13,6 +13,7 @@ import coursier.util.Parse
 
 import scala.annotation.tailrec
 import scala.language.reflectiveCalls
+import scala.util.Try
 
 case class CommonOptions(
   @Help("Keep optional dependencies (Maven)")
@@ -50,6 +51,9 @@ case class CommonOptions(
   @Help("Maximum number of parallel downloads (default: 6)")
   @Short("n")
     parallel: Int = 6,
+  @Help("Checksums")
+  @Value("checksum1,checksum2,... - end with none to allow for no checksum validation if none are available")
+    checksum: List[String],
   @Recurse
     cacheOptions: CacheOptions
 ) {
@@ -225,18 +229,23 @@ case class Launch(
 
   val contextLoader = Thread.currentThread().getContextClassLoader
 
-  val parentLoader0: ClassLoader = Launch.mainClassLoader(contextLoader)
-    .flatMap(cl => Option(cl.getParent))
-    .getOrElse {
-      if (common.verbose0 >= 0)
-        Console.err.println(
-          "Warning: cannot find the main ClassLoader that launched coursier. " +
-          "Was coursier launched by its main launcher? " +
-          "The ClassLoader of the application that is about to be launched will be intertwined " +
-          "with the one of coursier, which may be a problem if their dependencies conflict."
-        )
+  val parentLoader0: ClassLoader =
+    if (Try(contextLoader.loadClass("coursier.Launch")).isSuccess)
+      Launch.mainClassLoader(contextLoader)
+        .flatMap(cl => Option(cl.getParent))
+        .getOrElse {
+          if (common.verbose0 >= 0)
+            Console.err.println(
+              "Warning: cannot find the main ClassLoader that launched coursier. " +
+              "Was coursier launched by its main launcher? " +
+              "The ClassLoader of the application that is about to be launched will be intertwined " +
+              "with the one of coursier, which may be a problem if their dependencies conflict."
+            )
+          contextLoader
+        }
+    else
+      // proguarded -> no risk of conflicts, no need to find a specific ClassLoader
       contextLoader
-    }
 
   val (parentLoader, filteredFiles) =
     if (isolated.isolated.isEmpty)
diff --git a/cli/src/main/scala-2.11/coursier/cli/Helper.scala b/cli/src/main/scala-2.11/coursier/cli/Helper.scala
index e68fec54f..ab785404a 100644
--- a/cli/src/main/scala-2.11/coursier/cli/Helper.scala
+++ b/cli/src/main/scala-2.11/coursier/cli/Helper.scala
@@ -173,6 +173,18 @@ class Helper(
       )
   }
 
+  val checksums = {
+    val splitChecksumArgs = checksum.flatMap(_.split(',')).filter(_.nonEmpty)
+    if (splitChecksumArgs.isEmpty)
+      Cache.defaultChecksums
+    else
+      splitChecksumArgs.map {
+        case none if none.toLowerCase == "none" => None
+        case sumType => Some(sumType)
+      }
+  }
+
+
   val startRes = Resolution(
     dependencies.toSet,
     forceVersions = forceVersions,
@@ -186,7 +198,7 @@ class Helper(
       None
 
   val fetchs = cachePolicies.map(p =>
-    Cache.fetch(caches, p, logger = logger, pool = pool)
+    Cache.fetch(caches, p, checksums = checksums, logger = logger, pool = pool)
   )
   val fetchQuiet = coursier.Fetch.from(
     repositories,
@@ -261,7 +273,7 @@ class Helper(
     subset: Set[Dependency] = null
   ): Seq[File] = {
 
-    if (verbose0 >= 0) {
+    if (subset == null && verbose0 >= 0) {
       val msg = cachePolicies match {
         case Seq(CachePolicy.LocalOnly) =>
           "  Checking artifacts"
@@ -296,8 +308,8 @@ class Helper(
       println(s"  Found ${artifacts.length} artifacts")
 
     val tasks = artifacts.map(artifact =>
-      (Cache.file(artifact, caches, cachePolicies.head, logger = logger, pool = pool) /: cachePolicies.tail)(
-        _ orElse Cache.file(artifact, caches, _, logger = logger, pool = pool)
+      (Cache.file(artifact, caches, cachePolicies.head, checksums = checksums, logger = logger, pool = pool) /: cachePolicies.tail)(
+        _ orElse Cache.file(artifact, caches, _, checksums = checksums, logger = logger, pool = pool)
       ).run.map(artifact.->)
     )
 
diff --git a/project/generate-standalone-launcher.sh b/project/generate-standalone-launcher.sh
index 2109a34f3..594adc9d8 100755
--- a/project/generate-standalone-launcher.sh
+++ b/project/generate-standalone-launcher.sh
@@ -3,48 +3,14 @@ set -e
 
 cd "$(dirname "$0")/.."
 
-if [ ! -d cli/target/pack/lib ]; then
-  echo "Compiling coursier-cli..." 1>&2
-  sbt cli/pack
+if [ ! -e cli/target/scala-2.11/proguard/coursier-standalone.jar ]; then
+  echo "Generating proguarded JAR..." 1>&2
+  sbt cli/proguard:proguard
 fi
 
-echo -n > coursier.pro
-
-for i in cli/target/pack/lib/*.jar; do
-  echo "-injars $i" >> coursier.pro
-done
-
-cat >> coursier.pro << EOF
--outjars coursier-standalone.jar
--libraryjars <java.home>/lib/rt.jar
-
--dontwarn
-
--keep class coursier.cli.Coursier {
-  public static void main(java.lang.String[]);
-}
-
--keep class coursier.cli.IsolatedClassLoader {
-  public java.lang.String[] getIsolationTargets();
-}
-EOF
-
-# -noverify added in launcher below because of errors like
-# http://sourceforge.net/p/proguard/bugs/567/
-
-# These options don't fix it:
-# -dontshrink
-# -dontoptimize
-# -dontobfuscate
-
-./coursier launch \
-  net.sf.proguard:proguard-base:5.2.1 -M proguard.ProGuard -- -- \
-    @coursier.pro
 cat > coursier-standalone << EOF
 #!/bin/sh
 exec java -noverify -cp "\$0" coursier.cli.Coursier "\$@"
 EOF
-cat coursier-standalone.jar >> coursier-standalone
+cat cli/target/scala-2.11/proguard/coursier-standalone.jar >> coursier-standalone
 chmod +x coursier-standalone
-rm -f coursier-standalone.jar
-rm -f coursier.pro