【发布时间】：2019-11-17 04:32:45
【问题描述】：
我正在尝试使用 CircleCI 自动化一个小型 Scala 项目的 CI/CD。该项目使用 sbt 构建，并使用 ScalaTest 库进行测试。
根据ScalaTest installation instruction's 的建议，我正在使用 SuperSafe 编译器插件，这需要我向全局文件 ~/.sbt/1.0/global.sbt 添加解析器：
resolvers += "Artima Maven Repository" at "http://repo.artima.com/releases"
我可以在本地成功编译和测试我的项目。但是在 CircleCI 上，构建失败并出现错误：
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[warn] :: UNRESOLVED DEPENDENCIES ::
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[warn] :: com.artima.supersafe#supersafe_2.12.8;1.1.7: not found
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[warn]
[warn] Note: Unresolved dependencies path:
[warn] com.artima.supersafe:supersafe_2.12.8:1.1.7 (Defaults.scala#L3331)
[warn] +- filesystem:filesystem_2.12:0.1
[error] sbt.librarymanagement.ResolveException: unresolved dependency: com.artima.supersafe#supersafe_2.12.8;1.1.7: not found
[error] at sbt.internal.librarymanagement.IvyActions$.resolveAndRetrieve(IvyActions.scala:332)
[error] at sbt.internal.librarymanagement.IvyActions$.$anonfun$updateEither$1(IvyActions.scala:208)
[error] at sbt.internal.librarymanagement.IvySbt$Module.$anonfun$withModule$1(Ivy.scala:239)
[error] at sbt.internal.librarymanagement.IvySbt.$anonfun$withIvy$1(Ivy.scala:204)
[error] at sbt.internal.librarymanagement.IvySbt.sbt$internal$librarymanagement$IvySbt$$action$1(Ivy.scala:70)
[error] at sbt.internal.librarymanagement.IvySbt$$anon$3.call(Ivy.scala:77)
[error] at xsbt.boot.Locks$GlobalLock.withChannel$1(Locks.scala:95)
[error] at xsbt.boot.Locks$GlobalLock.xsbt$boot$Locks$GlobalLock$$withChannelRetries$1(Locks.scala:80)
[error] at xsbt.boot.Locks$GlobalLock$$anonfun$withFileLock$1.apply(Locks.scala:99)
[error] at xsbt.boot.Using$.withResource(Using.scala:10)
[error] at xsbt.boot.Using$.apply(Using.scala:9)
[error] at xsbt.boot.Locks$GlobalLock.ignoringDeadlockAvoided(Locks.scala:60)
[error] at xsbt.boot.Locks$GlobalLock.withLock(Locks.scala:50)
[error] at xsbt.boot.Locks$.apply0(Locks.scala:31)
[error] at xsbt.boot.Locks$.apply(Locks.scala:28)
[error] at sbt.internal.librarymanagement.IvySbt.withDefaultLogger(Ivy.scala:77)
[error] at sbt.internal.librarymanagement.IvySbt.withIvy(Ivy.scala:199)
[error] at sbt.internal.librarymanagement.IvySbt.withIvy(Ivy.scala:196)
[error] at sbt.internal.librarymanagement.IvySbt$Module.withModule(Ivy.scala:238)
[error] at sbt.internal.librarymanagement.IvyActions$.updateEither(IvyActions.scala:193)
[error] at sbt.librarymanagement.ivy.IvyDependencyResolution.update(IvyDependencyResolution.scala:20)
[error] at sbt.librarymanagement.DependencyResolution.update(DependencyResolution.scala:56)
[error] at sbt.internal.LibraryManagement$.resolve$1(LibraryManagement.scala:45)
[error] at sbt.internal.LibraryManagement$.$anonfun$cachedUpdate$12(LibraryManagement.scala:93)
[error] at sbt.util.Tracked$.$anonfun$lastOutput$1(Tracked.scala:68)
[error] at sbt.internal.LibraryManagement$.$anonfun$cachedUpdate$19(LibraryManagement.scala:106)
[error] at scala.util.control.Exception$Catch.apply(Exception.scala:224)
[error] at sbt.internal.LibraryManagement$.$anonfun$cachedUpdate$11(LibraryManagement.scala:106)
[error] at sbt.internal.LibraryManagement$.$anonfun$cachedUpdate$11$adapted(LibraryManagement.scala:89)
[error] at sbt.util.Tracked$.$anonfun$inputChanged$1(Tracked.scala:149)
[error] at sbt.internal.LibraryManagement$.cachedUpdate(LibraryManagement.scala:120)
[error] at sbt.Classpaths$.$anonfun$updateTask$5(Defaults.scala:2561)
[error] at scala.Function1.$anonfun$compose$1(Function1.scala:44)
[error] at sbt.internal.util.$tilde$greater.$anonfun$$u2219$1(TypeFunctions.scala:40)
[error] at sbt.std.Transform$$anon$4.work(System.scala:67)
[error] at sbt.Execute.$anonfun$submit$2(Execute.scala:269)
[error] at sbt.internal.util.ErrorHandling$.wideConvert(ErrorHandling.scala:16)
[error] at sbt.Execute.work(Execute.scala:278)
[error] at sbt.Execute.$anonfun$submit$1(Execute.scala:269)
[error] at sbt.ConcurrentRestrictions$$anon$4.$anonfun$submitValid$1(ConcurrentRestrictions.scala:178)
[error] at sbt.CompletionService$$anon$2.call(CompletionService.scala:37)
[error] at java.util.concurrent.FutureTask.run(FutureTask.java:266)
[error] at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
[error] at java.util.concurrent.FutureTask.run(FutureTask.java:266)
[error] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
[error] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
[error] at java.lang.Thread.run(Thread.java:748)
[error] (update) sbt.librarymanagement.ResolveException: unresolved dependency: com.artima.supersafe#supersafe_2.12.8;1.1.7: not found
当未在 SBT 中添加所需的解析器时，会出现此错误 - 参见例如this issue。我是 CircleCI 的新手，不知道它的 SBT 全局目录在哪里，也不知道如何修改文件。
相反，我尝试将解析器直接添加到我的项目的 ./project/plugins.sbt 文件中，但这并没有解决问题。
SBT 和 CircleCI 配置文件如下所示：
./build.sbt
name := "my-project-name"
version := "0.1"
scalaVersion := "2.12.8"
libraryDependencies += "org.scalactic" %% "scalactic" % "3.0.8"
libraryDependencies += "org.scalatest" %% "scalatest" % "3.0.8" % "test"
./project/build.properties
sbt.version = 1.2.8
./project/plugins.sbt
resolvers += "Artima Maven Repository" at "http://repo.artima.com/releases"
addSbtPlugin("com.artima.supersafe" % "sbtplugin" % "1.1.7")
./.circleci/config.yml
（CircleCI 提供的默认 Scala 配置）
# Scala CircleCI 2.0 configuration file
#
# Check https://circleci.com/docs/2.0/sample-config/ for more details
#
version: 2
jobs:
build:
docker:
# specify the version you desire here
- image: circleci/openjdk:8-jdk
# Specify service dependencies here if necessary
# CircleCI maintains a library of pre-built images
# documented at https://circleci.com/docs/2.0/circleci-images/
# - image: circleci/postgres:9.4
working_directory: ~/repo
environment:
# Customize the JVM maximum heap limit
JVM_OPTS: -Xmx3200m
TERM: dumb
steps:
- checkout
# Download and cache dependencies
- restore_cache:
keys:
- v1-dependencies-{{ checksum "build.sbt" }}
# fallback to using the latest cache if no exact match is found
- v1-dependencies-
- run: cat /dev/null | sbt test:compile
- save_cache:
paths:
- ~/.m2
key: v1-dependencies--{{ checksum "build.sbt" }}
# run tests!
- run: cat /dev/null | sbt test:test
我想要一个成功的 CircleCI 构建，这将需要一种方法来添加解析器，无论是在项目自己的文件中，还是在 CircleCI 容器的 SBT 全局文件中声明它。
【问题讨论】：
标签： scala sbt scalatest circleci