diff --git a/src/blackmisc/directoryutils.cpp b/src/blackmisc/directoryutils.cpp
index 06dc496d9..e76ea349d 100644
--- a/src/blackmisc/directoryutils.cpp
+++ b/src/blackmisc/directoryutils.cpp
@@ -45,6 +45,25 @@ namespace BlackMisc
         return pDir;
     }
 
+    const QString &CDirectoryUtils::getXSwiftBusBuildDirectory()
+    {
+        if (!CBuildConfig::isLocalDeveloperDebugBuild())
+        {
+            static const QString e;
+            return e;
+        }
+
+        // the xswiftbus directory in out, not in dist
+        static const QString bd = []
+        {
+            QDir dir(binDirectory());
+            if (!dir.cdUp()) { return QString(); }
+            if (!dir.cd("xswiftbus")) { return QString(); }
+            return dir.absolutePath();
+        }();
+        return bd;
+    }
+
     QString CDirectoryUtils::executableFilePath(const QString &executable)
     {
         Q_ASSERT_X(!executable.isEmpty(), Q_FUNC_INFO, "Missing executable file path");
@@ -401,6 +420,14 @@ namespace BlackMisc
         return !dir.isEmpty();
     }
 
+    bool CDirectoryUtils::mkPathIfNotExisting(const QString &dir)
+    {
+        const QDir d(dir);
+        if (d.exists()) { return true; }
+        QDir mkDir;
+        return mkDir.mkpath(dir);
+    }
+
     QStringList CDirectoryUtils::getExistingUnemptyDirectories(const QStringList &directories)
     {
         QStringList dirs;
@@ -447,6 +474,40 @@ namespace BlackMisc
         return found;
     }
 
+    int CDirectoryUtils::copyDirectoryRecursively(const QString &fromDir, const QString &toDir, bool replaceOnConflict)
+    {
+        QDir dir(fromDir);
+        const QStringList fromFiles = dir.entryList(QDir::Files | QDir::NoDotAndDotDot);
+        if (!mkPathIfNotExisting(toDir)) { return -1; }
+
+        int count = 0;
+        for (const QString &copyFile : fromFiles)
+        {
+            const QString from = CFileUtils::appendFilePaths(fromDir, copyFile);
+            const QString to = CFileUtils::appendFilePaths(toDir, copyFile);
+            if (QFile::exists(to))
+            {
+                if (!replaceOnConflict) { continue; }
+                if (!QFile::remove(to)) { return -1; }
+            }
+            if (!QFile::copy(from, to)) { return -1; }
+            count++;
+        }
+
+        const QStringList subDirs = dir.entryList(QDir::Dirs | QDir::NoDotAndDotDot);
+        for (const QString &copyDir : subDirs)
+        {
+            const QString fromSubDir = CFileUtils::appendFilePaths(fromDir, copyDir);
+            const QString toSubDir = CFileUtils::appendFilePaths(toDir, copyDir);
+            if (!mkPathIfNotExisting(toDir)) { return -1; }
+
+            const int c = copyDirectoryRecursively(fromSubDir, toSubDir, replaceOnConflict);
+            if (c < 0) { return -1; }
+            count += c;
+        }
+        return count;
+    }
+
     CDirectoryUtils::DirComparison CDirectoryUtils::compareTwoDirectories(const QString &dirSource, const QString &dirTarget, bool nestedDirs)
     {
         DirComparison comp;
diff --git a/src/blackmisc/directoryutils.h b/src/blackmisc/directoryutils.h
index 2e6a6715b..673a105e4 100644
--- a/src/blackmisc/directoryutils.h
+++ b/src/blackmisc/directoryutils.h
@@ -17,6 +17,7 @@
 #include <QMap>
 #include <QSet>
 #include <QString>
+#include <QDateTime>
 #include <QFileInfoList>
 
 namespace BlackMisc
@@ -36,6 +37,10 @@ namespace BlackMisc
         //! Plugins directory
         static const QString &pluginsDirectory();
 
+        //! The build directory
+        //! \remark if is a local build
+        static const QString &getXSwiftBusBuildDirectory();
+
         //! The executable file path
         static QString executableFilePath(const QString &executable);
 
@@ -129,6 +134,13 @@ namespace BlackMisc
         //! Exists directory and does it contains files
         static bool existsUnemptyDirectory(const QString &testDir);
 
+        //! Make directory if not already existing
+        //! \remark returns true if path exists or was created
+        static bool mkPathIfNotExisting(const QString &dir);
+
+        //! Copy directory recursively
+        static int copyDirectoryRecursively(const QString &fromDir, const QString &toDir, bool replaceOnConflict);
+
         //! Get the existing directories
         static QStringList getExistingUnemptyDirectories(const QStringList &directories);
 
diff --git a/src/blackmisc/fileutils.cpp b/src/blackmisc/fileutils.cpp
index 56a703a8d..d330ba156 100644
--- a/src/blackmisc/fileutils.cpp
+++ b/src/blackmisc/fileutils.cpp
@@ -10,7 +10,6 @@
 #include "blackmisc/worker.h"
 #include "blackmisc/fileutils.h"
 #include "blackmisc/math/mathutils.h"
-
 #include "blackconfig/buildconfig.h"
 
 #include <QCoreApplication>
@@ -116,7 +115,8 @@ namespace BlackMisc
 
     QString CFileUtils::appendFilePathsAndFixUnc(const QString &path1, const QString &path2)
     {
-        return CFileUtils::fixWindowsUncPath(appendFilePaths(path1, path2));
+        static const bool win = CBuildConfig::isRunningOnWindowsNtPlatform();
+        return win ? CFileUtils::fixWindowsUncPath(appendFilePaths(path1, path2)) : appendFilePaths(path1, path2);
     }
 
     QString CFileUtils::stripFileFromPath(const QString &path)
@@ -133,38 +133,10 @@ namespace BlackMisc
 
     QString CFileUtils::appendFilePathsAndFixUnc(const QString &path1, const QString &path2, const QString &path3)
     {
-        return CFileUtils::fixWindowsUncPath(CFileUtils::appendFilePaths(CFileUtils::appendFilePaths(path1, path2), path3));
-    }
-
-    bool CFileUtils::copyRecursively(const QString &sourceDir, const QString &destinationDir)
-    {
-        QFileInfo sourceFileInfo(sourceDir);
-        if (sourceFileInfo.isDir())
-        {
-            QDir targetDir(destinationDir);
-            if (!targetDir.mkpath("."))
-            {
-                return false;
-            }
-
-            const QDir originDir(sourceFileInfo.absoluteFilePath());
-            const auto fileNames = originDir.entryList(QDir::Files | QDir::Dirs | QDir::NoDotAndDotDot | QDir::Hidden | QDir::System);
-            for (const QString &fileName : fileNames)
-            {
-                if (!copyRecursively(originDir.absoluteFilePath(fileName), targetDir.absoluteFilePath(fileName)))
-                {
-                    return false;
-                }
-            }
-        }
-        else
-        {
-            if (!QFile::copy(sourceDir, destinationDir))
-            {
-                return false;
-            }
-        }
-        return true;
+        static const bool win = CBuildConfig::isRunningOnWindowsNtPlatform();
+        return win ?
+               CFileUtils::fixWindowsUncPath(CFileUtils::appendFilePaths(CFileUtils::appendFilePaths(path1, path2), path3)) :
+               CFileUtils::appendFilePaths(CFileUtils::appendFilePaths(path1, path2), path3);
     }
 
     QString CFileUtils::normalizeFilePathToQtStandard(const QString &filePath)
@@ -325,7 +297,7 @@ namespace BlackMisc
         return result;
     }
 
-    QString CFileUtils::findNewestFile(const QDir &dir, bool recursive, const QStringList &nameFilters, const QStringList &excludeDirectories)
+    QFileInfo CFileUtils::findNewestFile(const QDir &dir, bool recursive, const QStringList &nameFilters, const QStringList &excludeDirectories)
     {
         if (isExcludedDirectory(dir, excludeDirectories)) { return QString(); }
         const QFileInfoList files = enumerateFiles(dir, recursive, nameFilters, excludeDirectories);
@@ -335,7 +307,7 @@ namespace BlackMisc
         {
             return a.lastModified() < b.lastModified();
         });
-        return it->filePath();
+        return *it;
     }
 
     const QStringList &CFileUtils::getSwiftExecutables()
@@ -390,6 +362,8 @@ namespace BlackMisc
 
     QString CFileUtils::fixWindowsUncPath(const QString &filePath)
     {
+        static const bool win = CBuildConfig::isRunningOnWindowsNtPlatform();
+        if (!win) { return filePath; }
         if (!filePath.startsWith('/')) { return filePath; }
         if (filePath.startsWith("//")) { return filePath; }
         static const QString f("/%1");
@@ -398,6 +372,9 @@ namespace BlackMisc
 
     QStringList CFileUtils::fixWindowsUncPaths(const QStringList &filePaths)
     {
+        static const bool win = CBuildConfig::isRunningOnWindowsNtPlatform();
+        if (!win) { return filePaths; }
+
         QStringList fixedPaths;
         for (const QString &path : filePaths)
         {
diff --git a/src/blackmisc/fileutils.h b/src/blackmisc/fileutils.h
index 61398fe1a..41d02fc28 100644
--- a/src/blackmisc/fileutils.h
+++ b/src/blackmisc/fileutils.h
@@ -82,10 +82,6 @@ namespace BlackMisc
         //! Strip file from path a/b/c.json a/b
         static QString stripFileFromPath(const QString &path);
 
-        //! If `sourceDir` is a directory, copies it recursively, so that `sourceDir` becomes `destinationDir`.
-        //! If it is a file, just copies the file.
-        static bool copyRecursively(const QString &sourceDir, const QString &destinationDir);
-
         //! Normalize file path to Qt standard, e.g by turning \ to /
         static QString normalizeFilePathToQtStandard(const QString &filePath);
 
@@ -130,7 +126,7 @@ namespace BlackMisc
         static QFileInfoList enumerateFiles(const QDir &dir, bool recursive, const QStringList &nameFilters = {}, const QStringList &excludeDirectories = {}, std::function<bool(const QFileInfo &)> predicate = {});
 
         //! Returns path to the newest file in dir, optionally matching a wildcard, or empty string.
-        static QString findNewestFile(const QDir &dir, bool recursive, const QStringList &nameFilters = {}, const QStringList &excludeDirectories = {});
+        static QFileInfo findNewestFile(const QDir &dir, bool recursive, const QStringList &nameFilters = {}, const QStringList &excludeDirectories = {});
 
         //! Get all swift executables
         static const QStringList &getSwiftExecutables();