val snapshotsName = "Repository Snapshots"
val snapshotsUrl = new java.net.URL("http://nexusHostIp:8081/nexus/content/repositories/snapshots")
val snapshotsPattern = "[organisation]/[module]/[revision]-SNAPSHOT/[artifact]-[revision](-[timestamp]).[ext]"
val snapshots = Resolver.url(snapshotsName, snapshotsUrl)(Patterns(snapshotsPattern))
Credentials(Path.userHome / ".ivy2" / ".credentials", log)

val dep = "group" % "artifact" % "0.0.1" extra("timestamp" -> "20101202.195418-3")

realm=Snapshots Nexus
host=nexusHostIp:8081
user=nexususername
password=nexuspassword

==== Repository Snapshots: tried
[warn]    -- artifact group#artifact;0.0.1!artifact.jar:
[warn]    http://nexusHostIp:8081/nexus/content/repositories/snapshots/group/artifact/0.0.1-SNAPSHOT/artifact-0.0.1-20101202.195418-3.jar

Credentials.add("Repository Snapshots", "nexusHostIp", "nexususername", "nexuspassword")

Credentials.add("Sonatype Nexus Repository Manager", "nexusHostIp", "nexususername", "nexuspassword")

val snapshotsName = "Repository Snapshots"
val snapshotsUrl = new java.net.URL("http://nexusHostIp:8081/nexus/content/repositories/snapshots")
val snapshotsPattern = "[organisation]/[module]/[revision]-SNAPSHOT/[artifact]-[revision](-[timestamp]).[ext]"
val snapshots = Resolver.url(snapshotsName, snapshotsUrl)(Patterns(snapshotsPattern))
Credentials(Path.userHome / ".ivy2" / ".credentials", log)

val dep = "group" % "artifact" % "0.0.1" extra("timestamp" -> "20101202.195418-3")

realm=Sonatype Nexus Repository Manager
host=nexusHostIp
user=nexususername
password=nexuspassword

[repositories]
  local
  my-ivy-proxy-releases: http://repo.company.com/ivy-releases/, [organization]/[module]/(scala_[scalaVersion]/)(sbt_[sbtVersion]/)[revision]/[type]s/[artifact](-[classifier]).[ext]
  my-maven-proxy-releases: http://repo.company.com/maven-releases/

realm=Artifactory Realm
host=artifactory.mycompany.com
user=username
password=password

credentials += Credentials(Path.userHome / ".sbt" / ".credentials")