I have a multi project setup in SBT. In our build process there's a file in the project that is automatically updated by our CI. It contains the app version.
However, whenever I try to load the app settings, I get an error similar to the following:
[error] References to undefined settings:
[error]
[error] module1/*:appProperties from module1/*:version (/Users/jespeno/workspace/multi-module/build.sbt:10)
[error]
[error] module2/*:appProperties from module2/*:version (/Users/jespeno/workspace/multi-module/build.sbt:10)
This is what my sbt file looks like:
val appProperties = settingKey[Properties]("app version")
appProperties := {
val prop = new Properties()
IO.load(prop, new File("version.properties"))
prop
}
val commonSettings = Seq(
version := appProperties.value.getProperty("project.version"),
scalaVersion := "2.11.7"
)
lazy val root = (project in file(".")).settings(commonSettings: _*)
.aggregate(module1, module2)
.settings(
name := appProperties.value.getProperty("project.name")
)
lazy val module1 = (project in file("./modules/module1"))
.settings(commonSettings: _*)
.settings(
name := "module1"
)
lazy val module2 = (project in file("./modules/module2"))
.settings(commonSettings: _*)
.settings(
name := "module2"
)
Here's my version.properties:
project.name="multi-module"
project.version="0.0.1"
The interesting thing is, the root project is able to load the settings correctly: if I remove the sub-modules, the build starts correctly. I'm using SBT version 0.13.8.
This is caused by appProperties not being visible to submodules(module1, module2), you can change it to:
appProperties in Global := {
val prop = new Properties()
IO.load(prop, new File("version.properties"))
prop
}
sbt scopes
Related
I'm implementing a monorepo using SBT. I would like to iterate over my subprojects in order to initialize them (as the have the same configuration) and prevent code duplication.
In my build.sbt:
lazy val root = (project in file("."))
.aggregate(projects: _*)
.settings(
crossScalaVersions := Nil,
publish / skip := true
)
lazy val projects = Seq("projectA", "projectB", "projectC")
.map((projectName: String) => (project in file(projectName))
.settings(
name := projectName,
commonSettings,
libraryDependencies ++= ModulesDependencies.get(projectName))
.project
)
I'm getting the error:
error: project must be directly assigned to a val, such as `val x = project`. Alternatively, you can use `sbt.Project.apply`
Based on the error message, I also tried to use sbt.Project.apply(projectName, file(projectName)).settings(...) instead, but I'm also facing some funny errors.
From what I understand, it seems that SBT expects me to declare as lazy val projectA = (project in file("projectA")).settings(...), which works fine but I would have to duplicate this code for all my sub projects.
Is this iteration that I try to implement even possible?
Utility method might help with some of the duplication, for example
def createProject(projectName: String) = {
Project(projectName, file(projectName))
.settings(
name := projectName,
commonSettings,
libraryDependencies ++= ModulesDependencies.get(projectName)
)
}
lazy val projectA = createProject("projectA")
lazy val projectB = createProject("projectB")
lazy val projectC = createProject("projectC")
lazy val root = (project in file("."))
.aggregate(projectA, projectB, projectB)
.settings(
crossScalaVersions := Nil,
publish / skip := true
)
The sbt-native-packager can make a zip file with all dependencies and a script to run_
$ sbt universal:packageBin
I have a scala web application, using cross-build (appJS for front-end and appJVM for back-end).
How do I run this packager for the appJVM?
I've tried as follows, but it does not accept the command:
$ sbt appJVM/universal:packageBin
Here it is the build.sbt project, from https://www.scala-js.org/doc/project/cross-build.html
...
lazy val foo = crossProject.in(file(".")).
settings(
name := "foo",
version := "0.1-SNAPSHOT"
).
jvmSettings(
// Add JVM-specific settings here
).
jsSettings(
// Add JS-specific settings here
)
lazy val fooJVM = foo.jvm
lazy val fooJS = foo.js
How do I run this packager for the appJVM?
And how I include the file generated by sbt appJS/fullOptJS?
And some other static files?
Update with Ivan response
build.sbt:
import sbtcrossproject.CrossPlugin.autoImport.{crossProject, CrossType}
val sharedSettings = Seq(
scalaVersion := "2.12.8",
)
lazy val app =
crossProject(JSPlatform, JVMPlatform)
.in(file("."))
.settings(sharedSettings)
.jsSettings(
)
.jvmSettings(
libraryDependencies ++= Seq(
"com.typesafe.akka" %% "akka-http" % "10.1.9"
),
)
lazy val backend = project
.enablePlugins(UniversalPlugin)
.enablePlugins(JavaAppPackaging)
.dependsOn(app.jvm)
.settings(
mainClass in Compile := Some("com.example.EchoServer")
)
lazy val frontend = project
.enablePlugins(ScalaJSPlugin)
.dependsOn(app.js)
backend
.settings(
Seq(
resourceGenerators in Compile += Def.task {
Seq(
(fullOptJS in Compile in frontend).value,
(fastOptJS in Compile in frontend).value
).map { js =>
val resource = (resourceManaged in Compile).value / "public" / "assets" / js.data.name
IO.write(resource, IO.read(js.data))
resource
}
}.taskValue
)
)
and run:
$ sbt backend/universal:packageBin
34: error: type mismatch;
found : Seq[sbt.Def.Setting[Seq[sbt.Task[Seq[java.io.File]]]]]
required: Int
Seq(
^
[error] Type error in expression
I used the following structure.
Define a shared project that needs to be cross-compiled for JS and Scala.
lazy val shared = CrossPlugin.autoImport
.crossProject(JSPlatform, JVMPlatform)
.crossType(CrossType.Pure)
.jvmSettings(???)
.jsSettings(???)
lazy val sharedJvm = shared.jvm
lazy val sharedJs = shared.js
Add project that contains a Main class.
lazy val backend = project
.enablePlugins(UniversalPlugin)
.enablePlugins(JavaAppPackaging)
.dependsOn(sharedJvm)
Add web project containing web related code.
lazy val web = project
.enablePlugins(ScalaJSPlugin)
.dependsOn(sharedJs)
And finally, attach resources from web compiled into JS to backend.
backend
.settings(
Seq(
resourceGenerators in Compile += Def.task {
Seq(
(fullOptJS in Compile in web).value,
(fastOptJS in Compile in web).value
).map { js =>
val resource = (resourceManaged in Compile).value / "public" / "assets" / js.data.name
IO.write(resource, IO.read(js.data))
resource
}
}.taskValue
)
Main class needs to service compiled JS from public/assets, as configured in sbt, and any other web resources from its class path.
I am just starting to learn sbt to build scala projects.
Here is my build.sbt file
lazy val commonSettings = Seq(
organization := "com.example",
version := "0.1.0",
scalaVersion := "2.11.7"
)
lazy val task = taskKey[Unit]("An example task")
lazy val root = project.in(file(".")).
aggregate(core).
settings(commonSettings: _*).
settings(
task := { println("Hello!") },
name := "hello",
version := "1.0"
)
lazy val core = project.in( file("SbtScalaProjectFoo") )
My project structure is as follows
SbtScalaProject
|--SbtScalaProjectFoo
|--build.sbt
|--build.sbt
When I try to run "sbt" inside SbtScalaProject I get the following
No project 'core' in 'file:/Users/asattar/Dev/work/SbtScalaProject/'
What am I missing?
Having multiple build.sbt's has proven to make problems for me, too.
I would recommend aggregating all project data into one build.sbt. If you want to modularize the build, consider moving parts into .scala-Files in (the root project's) project/ directory.
I am converting a single-project build.sbt to a multi-project build.sbt, which is always a PITA. There is this obscure syntax to make plugin settings available. E.g. before
seq(appbundle.settings: _*)
How do I do this with sub-projects. E.g.
lazy val views = Project(
id = "views",
base = file("views"),
dependencies = Seq(core),
settings = commonSettings ++ Seq(
seq(appbundle.settings: _*), // ???
name := "views",
description := ...
)
)
This just gives me an error
found : Seq[sbt.Def.SettingsDefinition]
required: Seq[sbt.Def.Setting[_]]
settings = commonSettings ++ Seq(
^
Add them using ++ to the overall settings
lazy val views = Project(
id = "views",
base = file("views"),
dependencies = Seq(core),
settings = commonSettings ++ appbundle.settings ++ Seq(
name := "views",
description := ...
)
)
For my multi-project build, I'm trying to create a verify task that just results in scct:test and then scalastyle being executed in order. I would like scct:test to execute for all the subprojects, but not the top-level project. (If it executes for the top-level project, I get "timed out waiting for coverage report" from scct, since there's no source and no tests in that project.) What I had thought to do was to create verify as a task with dependencies on scct:test and scalastyle. This has turned out to be fairly baroque. Here is my Build.scala from my top-level project/ directory:
object MyBuild extends Build {
val verifyTask = TaskKey[Unit]("verify", "Compiles, runs tests via scct:test and then runs scalastyle")
val scctTestTask = (test in ScctPlugin.Scct).scopedKey
val scalastyleTask = PluginKeys.scalastyleTarget.scopedKey
lazy val root = Project("rootProject",
file("."),
settings = Defaults.defaultSettings ++
ScalastylePlugin.Settings ++
ScctPlugin.instrumentSettings ++
ScctPlugin.mergeReportSettings ++
Seq(
verifyTask in Global := {},
verifyTask <<= verifyTask.dependsOn(scctTestTask, scalastyleTask)
)
) aggregate(lift_webapp, selenium_tests)
lazy val subproject_1 = Project(id = "subproject_1", base = file("subproject_1"))
lazy val subproject_2 = Project(id = "subproject_2", base = file("subproject_2"))
}
However, the verify task only seems to exist for the root project; when I run it I don't see the same task being run in the subprojects. This is exactly the opposite of what I want; I'd like to issue sbt verify and have scct:test and scalastyle run in each of the subprojects but not in the top-level project. How might I go about doing that?
solution 1: define verifyTask in subprojects
First thing to note is that if you want some task (verify, test, etc) to run in some projects, you need to define them scoped to the subprojects. So in your case, the most straightforward thing to do this is to define verifyTask in subproject_1 and subproject_2.
lazy val scalaTest = "org.scalatest" %% "scalatest" % "3.0.4"
lazy val verify = taskKey[Unit]("verify")
def verifySettings = Seq(
skip in verify := false,
verify := (Def.taskDyn {
val sk = (skip in verify).value
if (sk) Def.task { println("skipping verify...") }
else (test in Test)
}).value
)
lazy val root = (project in file("."))
.aggregate(sub1, sub2)
.settings(
verifySettings,
scalaVersion in ThisBuild := "2.12.4",
skip in verify := true
)
lazy val sub1 = (project in file("sub1"))
.settings(
verifySettings,
libraryDependencies += scalaTest % Test
)
lazy val sub2 = (project in file("sub2"))
.settings(
verifySettings,
libraryDependencies += scalaTest % Test
)
solution 2: ScopeFilter
There was a recent Reddit thread that mentioned this question, so I'll post what I've done there.
If you want to manually aggregate on some subprojects, there's also a technique called ScopeFilter.
Note that I am using sbt 1.x here, but it should work with sbt 0.13 some minor change.
lazy val packageAll = taskKey[Unit]("package all the projects")
lazy val myTask = inputKey[Unit]("foo")
lazy val root = (project in file("."))
.aggregate(sub1, sub2)
.settings(
scalaVersion in ThisBuild := "2.12.4",
packageAll := {
(packageBin in Compile).all(nonRootsFilter).value
()
},
myTask := {
packageAll.value
}
)
lazy val sub1 = (project in file("sub1"))
lazy val sub2 = (project in file("sub2"))
def nonRootsFilter = {
import sbt.internal.inc.ReflectUtilities
def nonRoots: List[ProjectReference] =
allProjects filter {
case LocalProject(p) => p != "root"
case _ => false
}
def allProjects: List[ProjectReference] =
ReflectUtilities.allVals[Project](this).values.toList map { p =>
p: ProjectReference
}
ScopeFilter(inProjects(nonRoots: _*), inAnyConfiguration)
}
In the above, myTask depends on packageAll, which aggregates (packageBin in Compile) for all non-root subprojects.
sbt:root> myTask
[info] Packaging /Users/xxx/packageall/sub1/target/scala-2.12/sub1_2.12-0.1.0-SNAPSHOT.jar ...
[info] Done packaging.
[info] Packaging /Users/xxx/packageall/sub2/target/scala-2.12/sub2_2.12-0.1.0-SNAPSHOT.jar ...
[info] Done packaging.
[success] Total time: 0 s, completed Feb 2, 2018 7:23:23 PM
I may be wrong, but you are defining the verify task dependency only for the current project.
Maybe you can try:
Seq(
verifyTask in Global := {},
verifyTask <<= (verifyTask in Global).dependsOn(scctTestTask, scalastyleTask)
)
Or you can add the verifyTask settings to all your modules.