Redirect plugin build stdout and pass to logger. (#3763)

* Redirect plugin build stdout and pass to logger.

* Add changelog entry.

src/Fable.Compiler/CHANGELOG.md

@@ -11,6 +11,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 * [GH-3758](https://github.com/fable-compiler/Fable/pull/3758) Endpoint to get Fable.AST for a file. (by @nojaf)
 
+### Fixed
+
+* [GH-3763](https://github.com/fable-compiler/Fable/pull/3763) Redirect plugin build stdout and pass to logger. (by @nojaf)
+
 ## 4.0.0-alpha-006 - 2024-02-12
 
 ### Changed

src/Fable.Compiler/ProjectCracker.fs

@@ -138,8 +138,10 @@ type CrackerOptions(cliArgs: CliArgs, evaluateOnly: bool) =
                 |> Array.rev
                 |> String.concat "/"
 
-            Process.runSync projDir "dotnet" [ "build"; "-c"; cliArgs.Configuration ]
-            |> ignore
+            let stdout =
+                Process.runSyncWithOutput projDir "dotnet" [ "build"; "-c"; cliArgs.Configuration ]
+
+            Log.always stdout
 
             builtDlls.Add(normalizedDllPath) |> ignore
 

src/Fable.Compiler/Util.fsi

@@ -91,6 +91,8 @@ module Process =
 
     val runSync: workingDir: string -> exePath: string -> args: string list -> int
 
+    val runSyncWithOutput: string -> string -> string list -> string
+
 type PathResolver =
     abstract TryPrecompiledOutPath: sourceDir: string * relativePath: string -> string option