Fix compile error when --preprocess or --show-properties were passed (#331)

* do not expect binary artifacts when preprocess or show-properties

* remove noisy line

Author: masci

Diff for: commands/compile/compile.go

@@ -158,18 +158,16 @@ func Compile(ctx context.Context, req *rpc.CompileReq, outStream, errStream io.W
 	builderCtx.ExecStdout = outStream
 	builderCtx.ExecStderr = errStream
 	builderCtx.SetLogger(i18n.LoggerToCustomStreams{Stdout: outStream, Stderr: errStream})
+
+	// if --preprocess or --show-properties were passed, we can stop here
 	if req.GetShowProperties() {
-		err = builder.RunParseHardwareAndDumpBuildProperties(builderCtx)
+		return &rpc.CompileResp{}, builder.RunParseHardwareAndDumpBuildProperties(builderCtx)
 	} else if req.GetPreprocess() {
-		if err = builder.RunPreprocess(builderCtx); err != nil {
-			return nil, fmt.Errorf("preprocessing sketch: %s", err)
-		}
-		return &rpc.CompileResp{}, nil
-	} else {
-		err = builder.RunBuilder(builderCtx)
+		return &rpc.CompileResp{}, builder.RunPreprocess(builderCtx)
 	}
 
-	if err != nil {
+	// if it's a regular build, go on...
+	if err := builder.RunBuilder(builderCtx); err != nil {
 		return nil, fmt.Errorf("build failed: %s", err)
 	}
 

Diff for: legacy/builder/wipeout_build_path_if_build_options_changed.go

@@ -49,7 +49,6 @@ func (s *WipeoutBuildPathIfBuildOptionsChanged) Run(ctx *types.Context) error {
 	}
 	buildOptionsJson := ctx.BuildOptionsJson
 	previousBuildOptionsJson := ctx.BuildOptionsJsonPrevious
-	logger := ctx.GetLogger()
 
 	var opts *properties.Map
 	var prevOpts *properties.Map
@@ -79,7 +78,9 @@ func (s *WipeoutBuildPathIfBuildOptionsChanged) Run(ctx *types.Context) error {
 		}
 	}
 
-	logger.Println(constants.LOG_LEVEL_INFO, constants.MSG_BUILD_OPTIONS_CHANGED)
+	// FIXME: this should go outside legacy and behind a `logrus` call so users can
+	// control when this should be printed.
+	// logger.Println(constants.LOG_LEVEL_INFO, constants.MSG_BUILD_OPTIONS_CHANGED)
 
 	buildPath := ctx.BuildPath
 	files, err := gohasissues.ReadDir(buildPath.String())