I'm having this build.sbt for one of my projects and this project uses an sbt plugin that I have internally built and published locally. This sbt plugin contains the common shared settings and looks like this:
import sbt._
import Keys._
object SharedSettings {
// Scala Versions
val scala3 = "3.4.0"
val scala2 = "2.13.15"
val supportedScalaVersions = Seq(scala3, scala2)
// High-Level Project Details and Configurations
val projectMetadata = Seq(
ThisBuild / organization := "com.openelectrons", // Organization name
ThisBuild / scalaVersion := scala3, // Scala version
ThisBuild / version := "0.0.1", // Project version
ThisBuild / name := "open-electrons-sbt-template", // Project name
ThisBuild / description := "common settings for open-electrons projects", // Description
ThisBuild / startYear := Some(2022), // Start year
ThisBuild / homepage := Some(url("https://open-electrons.github.io/home/")), // Homepage URL
ThisBuild / licenses := Seq("MIT" -> url("https://opensource.org/licenses/MIT")), // License
ThisBuild / developers := List( // Developers
Developer(
id = "joesan",
name = "Joesan",
email = "https://bigelectrons.com/",
url = url("https://github.com/joesan")
)
),
ThisBuild / scmInfo := Some(
ScmInfo(
browseUrl = url("https://github.com/open-electrons/open-electrons-sbt-template"),
connection = "scm:git:https://github.com/open-electrons/open-electrons-sbt-template.git",
devConnection = Some("scm:git:https://github.com/open-electrons/open-electrons-sbt-template.git")
)
)
)
// Dependency resolvers
ThisBuild / resolvers ++= Seq(
Resolver.mavenCentral,
"Typesafe Releases" at "https://repo.typesafe.com/typesafe/releases/",
"Typesafe Snapshots" at "https://repo.typesafe.com/typesafe/snapshots/"
) ++ Resolver.sonatypeOssRepos("snapshots") ++ Resolver.sonatypeOssRepos("releases")
// Publishing configuration
val publishingConfig = Seq(
ThisBuild / publishTo := {
if (isSnapshot.value)
Some("Snapshots" at "https://oss.sonatype.org/content/repositories/snapshots")
else
Some("Releases" at "https://oss.sonatype.org/service/local/staging/deploy/maven2")
},
ThisBuild / publishMavenStyle := true,
ThisBuild / credentials += Credentials(
"Sonatype Nexus Repository Manager",
"oss.sonatype.org",
"<username>",
"<password>"
)
)
// Final Shared Settings
val settings: Seq[Setting[_]] = projectMetadata ++ publishingConfig
}
The build.sbt where I'm using the common shared settings from the plugin looks like this:
import scala.io.Source
// Import shared settings
import SharedSettings._
import org.typelevel.scalacoptions.ScalacOptions
// This is the main build file for the ocpp-gateway-server project
lazy val doobieVersion = "1.0.0-RC6"
lazy val dropWizardMetricsVersion = "4.2.19"
lazy val catsVersion = "2.12.0"
// Build definition for the ocpp-gateway-server project
lazy val ocppGatewayServer = (project in file("."))
.enablePlugins(PlayScala, DockerPlugin)
.settings(
SharedSettings.settings,
name := """ocpp-gateway-server""",
version := "1.0-SNAPSHOT",
scalaVersion := SharedSettings.scala3,
autoAPIMappings := true,
dependencyOverrides += "org.slf4j" % "slf4j-api" % "1.7.32",
libraryDependencies ++= Seq(
// Add explicit Cats dependencies
"org.typelevel" %% "cats-core" % catsVersion,
"org.typelevel" %% "cats-kernel" % catsVersion,
"org.typelevel" %% "cats-effect" % "3.5.7",
// Database libraries
"org.postgresql" % "postgresql" % "42.3.1",
"com.h2database" % "h2" % "1.4.199",
"org.tpolecat" %% "doobie-core" % doobieVersion exclude ("org.typelevel", "cats-core"),
"org.tpolecat" %% "doobie-postgres" % doobieVersion,
"org.tpolecat" %% "doobie-h2" % doobieVersion,
"org.tpolecat" %% "doobie-hikari" % doobieVersion,
"ch.qos.logback" % "logback-classic" % "1.2.6",
"org.playframework" %% "play-json" % "3.0.4",
"com.typesafe.play" %% "play-json-joda" % "2.10.6",
// For caching and distributed caching
//"com.github.cb372" %% "scalacache-core" % "0.28.0",
//"com.github.cb372" %% "scalacache-guava" % "0.28.0",
// For application Metrics
"io.dropwizard.metrics" % "metrics-core" % dropWizardMetricsVersion,
"io.dropwizard.metrics" % "metrics-jvm" % dropWizardMetricsVersion,
// Threading & Streaming libraries (https://monix.io/docs/current/intro/usage.html)
//"io.monix" %% "monix-execution" % "3.4.0",
"co.fs2" %% "fs2-core" % "3.9.1",
// MQTT client
"com.hivemq" % "hivemq-mqtt-client" % "1.3.3",
// OCPP & OCPI Core libraries
"com.openelectrons" %% "ocpp-j-api" % "0.0.1-SNAPSHOT",
"com.openelectrons" %% "ocpp-messages" % "0.0.1-SNAPSHOT",
"com.openelectrons" %% "ocpiv22-messages" % "0.0.1-SNAPSHOT",
"com.openelectrons" %% "ocpiv22-api" % "0.0.1-SNAPSHOT",
// Test libraries
"org.scalatestplus.play" %% "scalatestplus-play" % "7.0.1" % Test exclude ("org.slf4j", "slf4j-simple"),
"org.specs2" %% "specs2-core" % "4.20.0" % Test,
"org.scalacheck" %% "scalacheck" % "1.18.1" % Test,
"org.testcontainers" % "hivemq" % "1.19.7" % Test,
"com.dimafeng" %% "testcontainers-scala-scalatest" % "0.41.3" % Test,
"com.dimafeng" %% "testcontainers-scala-postgresql" % "0.41.0" % Test
// https://github.com/DanielaSfregola/random-data-generator
//"com.danielasfregola" %% "random-data-generator" % "2.9" % Test
),
Test / fork := true,
// The command below ignores all tests tagged with IntegrationTest when running: sbt clean test
Test / testOptions += Tests.Argument("-l", "com.openelectrons.ocpp.gateway.IntegrationTest")
)
Now when I tried to build my actual project with the build.sbt as above, I run into this error below:
[info] compiling 41 Scala sources and 2 Java sources to /Users/user/Projects/Private/scala-projects/open-electrons/cpo-platform/ocpp-gateway-server/target/scala-3.4.0/classes ...
[error] Flag -deprecation set repeatedly
[error] Flag -unchecked set repeatedly
[error] Flag -encoding set repeatedly
[error] three errors found
[error] (Compile / compileIncremental) Compilation failed
[error] Total time: 2 s, completed Dec 24, 2024, 1:08:34 PM
I'm using this in the plugins.sbt of the ocpp-gateway-server project:
// scalac options for the enlightened @see https://github.com/typelevel/sbt-tpolecat
addSbtPlugin("org.typelevel" % "sbt-tpolecat" % "0.5.2")
I'm not able to see where the duplication is coming from.
EDIT: I printed what scalac options is my project seeing and here it is:
[info] scalacOptions:
-encoding, utf8,
-deprecation,
-feature,
-unchecked,
-language:experimental.macros,
-language:higherKinds,
-language:implicitConversions,
-Ykind-projector,
-Wvalue-discard,
-Wnonunit-statement,
-Wunused:implicits,
-Wunused:explicits,
-Wunused:imports,
-Wunused:locals,
-Wunused:params,
-Wunused:privates,
-Xfatal-warnings,
-deprecation,
-unchecked,
-encoding, utf8
The duplicate options come from the plugins that you enable:
You enable PlayScala which enables deprecation here and you also enable sbt-tpolecat which also enables deprecation (can't bother to look up the exact line where it does, bt I'm sure it does).
Edit: A simple fix could be to add something like this within your settings (in build.sbt):
scalacOptions ~= { options =>
options.distinct
},