Support Mill 1

[lolgab]

No description provided.

[lefou]

build.sc is missing here. Also build.mill.yaml.

[lolgab]

build.sc is not here since it doesn't have a yaml header to parse.
I'm going to add build.mill.yaml. But, is it already supported? Maybe can be added in a follow up PR?

[lefou]

Oh, I wasn't aware build.sc does not support a YAML header. I think that's nowhere documented. build.mill.yaml is supported in Mill main and snapshot releases, but has a slightly different format (pure YAML without the comment-prefix), so no need to add it right now. I was just mentioning it for completeness.

[lefou]

I checked, Mill does read YAML-headers from build.sc files. We should also add support for them.

[lefou]

Looks good to me.

Maybe, the extra empty lead line in the YAML frontmatter tests is superfluous.

[lefou]

@mzuehlke Could you please approve the CI workflow for this PR?

[exoego]

MillAlgTest needs fix:

==> X org.scalasteward.core.buildtool.mill.MillAlgTest.getDependencies, version < 0.11  0.04s munit.ComparisonFailException: modules/core/src/test/scala/org/scalasteward/core/buildtool/mill/MillAlgTest.scala:32
31:    )
32:    assertEquals(state, expected)
33:  }
values are not the same
=> Diff (- expected, + obtained)
         "read",
-        "/tmp/scala-steward/workspace/lihaoyi/fastparse/.mill-version"
+        "/tmp/scala-steward/workspace/lihaoyi/fastparse/build.mill"
       )
         "read",
-        "/tmp/scala-steward/workspace/lihaoyi/fastparse/.config/mill-version"
+        "/tmp/scala-steward/workspace/lihaoyi/fastparse/build.mill.scala"
       )
       cmd = List(
+        "read",
+        "/tmp/scala-steward/workspace/lihaoyi/fastparse/build.sc"
+      )
+    ),
+    Cmd(
+      cmd = List(
         "write",
    at munit.FunSuite.assertEquals(FunSuite.scala:13)
    at org.scalasteward.core.buildtool.mill.MillAlgTest.$anonfun$new$1(MillAlgTest.scala:32)
==> X org.scalasteward.core.buildtool.mill.MillAlgTest.getDependencies, 0.11 <= version < 0.12  0.004s org.scalasteward.core.buildtool.mill.parser$CirceParseError: Failed to decode Modules
    at org.scalasteward.core.buildtool.mill.parser$.$anonfun$parseModules$1(parser.scala:43)
    at cats.syntax.EitherOps$.leftMap$extension(either.scala:193)
    at org.scalasteward.core.buildtool.mill.parser$.parseModules(parser.scala:43)
    at org.scalasteward.core.buildtool.mill.MillAlg.$anonfun$getProjectDependencies$1(MillAlg.scala:85)
    at cats.data.Kleisli.$anonfun$flatMap$4(Kleisli.scala:75)
    at set @ org.scalasteward.core.io.MockProcessAlg$.$anonfun$create$6(MockProcessAlg.scala:22)
    at blocking @ org.scalasteward.core.io.FileAlg$$anon$1.readResource(FileAlg.scala:111)
    at get @ org.scalasteward.core.io.MockProcessAlg$.$anonfun$create$2(MockProcessAlg.scala:15)
    at flatMap @ org.scalasteward.core.mock.package$.getFlatMapSet(package.scala:32)
    at flatMap @ org.scalasteward.core.mock.package$.getFlatMapSet(package.scala:32)
    at set @ org.scalasteward.core.io.MockProcessAlg$.$anonfun$create$6(MockProcessAlg.scala:22)
    at map @ org.scalasteward.core.io.MockProcessAlg$.$anonfun$create$14(MockProcessAlg.scala:37)
    at map @ org.scalasteward.core.io.MockProcessAlg$.$anonfun$create$7(MockProcessAlg.scala:23)
    at flatMap @ org.scalasteward.core.io.MockProcessAlg$.$anonfun$create$7(MockProcessAlg.scala:23)
    at set @ org.scalasteward.core.io.MockProcessAlg$.$anonfun$create$6(MockProcessAlg.scala:22)
Caused by: ParsingFailure: exhausted input