如何将sbt切换到离线模式

Question

问题

1. 为什么离线仍然需要外部http访问？
2. 如何启用正确的离线模式

问题

在sbt / activator内部执行：

compile
set offline := true
clean
compile

• 有互联网连接：
  • 首先成功编译。
  • 第二次成功编译。
• 删除互联网连接后。
  • 首次编译失败。
  • 第二次编译失败但速度稍快：D

失败是

[namek] $ compile
[info] Updating {file:/D:/personal/work2/namek/}namekServerPrj...
[info] Resolving org.apache.spark#spark-core_2.11;2.1.0 ...
[error] Server access Error: No route to host: connect url=https://repo1.maven.org/maven2/org/apache/spark/spark-core_2.11/2.1.0/spark-core_2.11-2.1.0.pom
[error] Server access Error: No route to host: connect url=http://repo.typesafe.com/typesafe/releases/org/apache/spark/spark-core_2.11/2.1.0/spark-core_2.11-2.1.0.pom
[error] Server access Error: No route to host: connect url=http://repo.typesafe.com/typesafe/ivy-releases/org.apache.spark/spark-core_2.11/2.1.0/ivys/ivy.xml
[error] Server access Error: No route to host: connect url=http://dl.bintray.com/raisercostin/maven/org/apache/spark/spark-core_2.11/2.1.0/spark-core_2.11-2.1.0.pom
[warn]  module not found: org.apache.spark#spark-core_2.11;2.1.0
[warn] ==== local: tried
[warn]   C:\Users\costin\.ivy2\local\org.apache.spark\spark-core_2.11\2.1.0\ivys\ivy.xml
[warn] ==== activator-launcher-local: tried
[warn]   C:\apps\activator\repository\org.apache.spark\spark-core_2.11\2.1.0\ivys\ivy.xml
[warn] ==== activator-local: tried
[warn]   C:\apps\activator\repository\org.apache.spark\spark-core_2.11\2.1.0\ivys\ivy.xml
[warn] ==== public: tried
[warn]   https://repo1.maven.org/maven2/org/apache/spark/spark-core_2.11/2.1.0/spark-core_2.11-2.1.0.pom
[warn] ==== typesafe-releases: tried
[warn]   http://repo.typesafe.com/typesafe/releases/org/apache/spark/spark-core_2.11/2.1.0/spark-core_2.11-2.1.0.pom
[warn] ==== typesafe-ivy-releasez: tried
[warn]   http://repo.typesafe.com/typesafe/ivy-releases/org.apache.spark/spark-core_2.11/2.1.0/ivys/ivy.xml
[warn] ==== raisercostin resolver: tried
[warn]   http://dl.bintray.com/raisercostin/maven/org/apache/spark/spark-core_2.11/2.1.0/spark-core_2.11-2.1.0.pom

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