SBT 1.3.8 to update SNAPSHOT versions automatically even when in incremental compilation

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Since SBT 1.3.0, Coursier is the default resolver engine, therefore we removed the Coursier SBT plugin from the dependencies.

In the Coursier-plugin times, we used COURSIER_TTL="5 min" to control how frequently SNAPSHOT version should be fetched automatically, even, when sbt ~test:compile is used during development.

For the dependency SNAPSHOT project, here is the output of:

sbt:hub> show isSnapshot
[info] common / isSnapshot
[info]  true
[info] isSnapshot
[info]  true

sbt:hub> show packagedArtifacts
[info] Wrote C:\Users\Ehnalis\Projects\hub\common\target\scala-2.12\common_2.12-0.5.0-SN
APSHOT.pom
[info] Wrote C:\Users\Ehnalis\Projects\hub\target\scala-2.12\hub_2.12-0.5.0-SNAPSHOT.pom

[info] common / packagedArtifacts
[info]  Map(Artifact(common, jar, jar, None, Vector(compile), None, Map(), None, false)
-> C:\Users\Ehnalis\Projects\hub\common\target\scala-2.12\common_2.12-0.5.0-SNAPSHOT.jar
, Artifact(common, src, jar, Some(tests-sources), Vector(test), None, Map(), None, false
) -> C:\Users\Ehnalis\Projects\hub\common\target\scala-2.12\common_2.12-0.5.0-SNAPSHOT-t
ests-sources.jar, Artifact(common, jar, jar, Some(tests), Vector(test), None, Map(), Non
e, false) -> C:\Users\Ehnalis\Projects\hub\common\target\scala-2.12\common_2.12-0.5.0-SN
APSHOT-tests.jar, Artifact(common, src, jar, Some(sources), Vector(compile), None, Map()
, None, false) -> C:\Users\Ehnalis\Projects\hub\common\target\scala-2.12\common_2.12-0.5
.0-SNAPSHOT-sources.jar, Artifact(common, pom, pom, None, Vector(pom), None, Map(), None
, false) -> C:\Users\Ehnalis\Projects\hub\common\target\scala-2.12\common_2.12-0.5.0-SNA
PSHOT.pom)
[info] packagedArtifacts
[info]  Map(Artifact(hub, src, jar, Some(sources), Vector(compile), None, Map(), None, f
alse) -> C:\Users\Ehnalis\Projects\hub\target\scala-2.12\hub_2.12-0.5.0-SNAPSHOT-sources
.jar, Artifact(hub, jar, jar, Some(tests), Vector(test), None, Map(), None, false) -> C:
\Users\Ehnalis\Projects\hub\target\scala-2.12\hub_2.12-0.5.0-SNAPSHOT-tests.jar, Artifac
t(hub, jar, jar, None, Vector(compile), None, Map(), None, false) -> C:\Users\Ehnalis\Pr
ojects\hub\target\scala-2.12\hub_2.12-0.5.0-SNAPSHOT.jar, Artifact(hub, src, jar, Some(t
ests-sources), Vector(test), None, Map(), None, false) -> C:\Users\Ehnalis\Projects\hub\
target\scala-2.12\hub_2.12-0.5.0-SNAPSHOT-tests-sources.jar, Artifact(hub, pom, pom, Non
e, Vector(pom), None, Map(), None, false) -> C:\Users\Ehnalis\Projects\hub\target\scala-
2.12\hub_2.12-0.5.0-SNAPSHOT.pom)

There is a CHECKED file under hub\common_2.12\0.5.0-SNAPSHOT in local .coursier directory and that would not update while code is changing in another project that depends on hub, while using ~test:compile.

COURSIER_TTL has not effect in 1.3.8. Is there any other way to setup SBT to frequently check for new SNAPSHOT versions?

sbt snapshot compilation versioning scala
1 Answers

Try setting forceUpdatePeriod duration in build.sbt

forceUpdatePeriod := Some(5 minutes)

which controls

Duration after which to force a full update to occur

because according to docs running update should fix problems with SNAPSHOTs

Run update explicitly. This will typically fix problems with out of date SNAPSHOTs or locally published artifacts.

EDIT: Try updating to sbt 1.3.9 which

Updates to lm-coursier-shaded 2.0.0-RC6-2

where 2.0.0-RC6-2 exposes TTL configuration

One can now adjust the TTL, the verbosity level, the checksums, and the cache policies via CoursierConfiguration, accessible via csrConfiguration in sbt.

Hence try setting in build.sbt

import scala.concurrent.duration.DurationInt
import lmcoursier.definitions.CachePolicy

csrConfiguration := csrConfiguration.value
  .withTtl(1.minute)
  .withCachePolicies(Vector(CachePolicy.LocalOnly))
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