No --watch'ed recompilation after clean #6114
Description
While in an editing session on Mill, I stumbled on a strange behavior.
After running mill -w __.compile for a long while, I couldn't explain some compiler error message and wanted to start over cleanly, so I run clean. But after that, mill -w __.compile did nothing.
> mill -w __.compile
...
Watching for changes to 1917 paths (via fsnotify) and 1897 other values... (Enter to re-run, Ctrl-C to exit)
[14169/16437] core.api.daemon.compile
[14169] [info] compiling 1 Scala source to /home/lefou/work/opensource/mill/out/core/api/daemon/compile.dest/classes ...
[14169] [info] done compiling
[15525/16437] libs.javalib.compile
[15525] [info] compiling 17 Scala sources to /home/lefou/work/opensource/mill/out/libs/javalib/compile.dest/classes ...
[15525] ***** missing reference, looking for JsonValueCodec/T in package com.github.plokhotnyuk.jsoniter_scala.core
[15525] decls = Scope{}
[15525] [error] -- [E007] Type Mismatch Error: /home/lefou/work/opensource/mill/libs/javalib/src/mill/javalib/bsp/BspJavaModule.scala:153:4
[15525] [error] 153 | Task.Anon {
[15525] [error] | ^
[15525] [error] |Found: mill.api.Task[(Seq[String], Seq[String] & mill.api.Opts,
[15525] [error] | Map[String, mill.api.Opt])]
[15525] [error] |Required: mill.Task.Simple[(classes : Seq[String], forkArgs : mill.api.Opts, forkEnv :
[15525] [error] | Map[String, mill.api.Opt])]
[15525] [error] 154 | (jm.allLocalMainClasses(), jm.forkArgs(), jm.allForkEnv())
[15525] [error] 155 | }
[15525] [error] |
[15525] [error] | longer explanation available when compiling with `-explain`
[15525] [error] one error found
[16437/16437, 1 failed] ============================== __.compile ============================== 6s
1 tasks failed
[15525] libs.javalib.compile Compilation failed
Watching for changes to 1917 paths (via fsnotify) and 1897 other values... (Enter to re-run, Ctrl-C to exit)
^C
> mill clean
[1/1] clean
[1/1] ============================== clean ============================== 55s
> mill -w __.compile
[66/66] ============================== __.compile ============================== 3s
Watching for changes to 1222 paths (via fsnotify) and 1212 other values... (Enter to re-run, Ctrl-C to exit)
[66/66] ============================== __.compile ============================== 1s
Watching for changes to 1222 paths (via fsnotify) and 1212 other values... (Enter to re-run, Ctrl-C to exit)
^C
> mill -w __.compile
[66/66] ============================== __.compile ============================== 1s
Watching for changes to 1222 paths (via fsnotify) and 1212 other values... (Enter to re-run, Ctrl-C to exit)
^C
> mill clean
[1/1] clean
[1/1] ============================== clean ==============================
> mill -w __.compile
[66/66] ============================== __.compile ============================== 1s
Watching for changes to 1222 paths (via fsnotify) and 1212 other values... (Enter to re-run, Ctrl-C to exit)
^C> mill --version
Mill Build Tool version 1.0.6-95-b08901
Java version: 21.0.8, vendor: Azul Systems, Inc., runtime: /home/lefou/.cache/coursier/arc/https/cdn.azul.com/zulu/bin/zulu21.44.17-ca-jdk21.0.8-linux_x64.tar.gz/zulu21.44.17-ca-jdk21.0.8-linux_x64
Default locale: de_DE, platform encoding: UTF-8
OS name: "Linux", version: 6.6.92-gentoo-x86_64, arch: amd64