diff --git a/.gitignore b/.gitignore
index 3574efd83127..daace381698c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,4 +7,4 @@ composer.lock
 
 # phar related
 /build
-rector.phar
+/build-phar
diff --git a/.pharignore b/.pharignore
new file mode 100644
index 000000000000..9080e73d2470
--- /dev/null
+++ b/.pharignore
@@ -0,0 +1,5 @@
+build
+docs
+tests
+phpunit
+.git
\ No newline at end of file
diff --git a/.travis.yml b/.travis.yml
index b7184f6e8545..ef4d8e28f93b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -27,7 +27,7 @@ script:
   # build phar test - 1st group is "build-phar" test step by step; 2nd group is all-together
   - |
     if [[ $BUILD_PHAR != "" ]]; then
-      packages/PharBuilder/bin/compile
+      composer compile-phar
       php rector.phar
       vendor/bin/phpunit --testsuite=phar-build
     fi
diff --git a/composer.json b/composer.json
index a6e71edafc8f..fe2a2ef92054 100644
--- a/composer.json
+++ b/composer.json
@@ -67,7 +67,14 @@
             "vendor/bin/ecs check bin packages src tests --fix",
             "bin/clean_levels.sh"
         ],
-        "phpstan": "vendor/bin/phpstan.phar analyse packages src tests --level max --configuration phpstan.neon"
+        "phpstan": "vendor/bin/phpstan.phar analyse packages src tests --level max --configuration phpstan.neon",
+        "compile-phar": [
+            "rm -f ./build/rector.phar",
+            "rsync -Rr --exclude-from '.pharignore' . ./build-phar/",
+            "bin/rector process ./build-phar/bin/ --config packages/PharBuilder/src/config/rector.yml --dry-run",
+            "php -dphar.readonly=0 packages/PharBuilder/bin/compile",
+            "rm -rf ./build-phar"
+        ]
     },
     "bin": [
         "bin/rector",
diff --git a/docs/BuildingRectorPhar.md b/docs/BuildingRectorPhar.md
index 7fd20eae157d..8234fcec351d 100644
--- a/docs/BuildingRectorPhar.md
+++ b/docs/BuildingRectorPhar.md
@@ -3,5 +3,5 @@
 To build `rector.phar` just run:
 
 ```bash
-packages/PharBuilder/bin/compile 
+packages/PharBuilder/bin/compile
 ```
diff --git a/packages/PharBuilder/src/Compiler/Compiler.php b/packages/PharBuilder/src/Compiler/Compiler.php
index a052aabde379..898280662eb7 100644
--- a/packages/PharBuilder/src/Compiler/Compiler.php
+++ b/packages/PharBuilder/src/Compiler/Compiler.php
@@ -5,13 +5,10 @@
 use FilesystemIterator;
 use Phar;
 use Rector\PharBuilder\Exception\BinFileNotFoundException;
+use Rector\PharBuilder\Exception\BuildDirNotCreatedException;
 use Rector\PharBuilder\Filesystem\PathNormalizer;
-use Rector\PharBuilder\Filesystem\PharFilesFinder;
-use Rector\PharBuilder\FinderToPharAdder;
 use Seld\PharUtils\Timestamps;
 use Symfony\Component\Console\Style\SymfonyStyle;
-use Symfony\Component\Finder\Finder;
-use Symfony\Component\Process\Process;
 
 final class Compiler
 {
@@ -20,11 +17,6 @@ final class Compiler
      */
     private $pharName;
 
-    /**
-     * @var PharFilesFinder
-     */
-    private $pharFilesFinder;
-
     /**
      * @var SymfonyStyle
      */
@@ -41,63 +33,54 @@ final class Compiler
     private $pathNormalizer;
 
     /**
-     * @var FinderToPharAdder
+     * @var string
+     */
+    private $buildPharDirectory;
+
+    /**
+     * @var string
      */
-    private $finderToPharAdder;
+    private $pharBaseName;
 
     /**
      * @var string
      */
-    private $buildDirectory;
+    private $pharDirName;
 
     public function __construct(
         string $pharName,
         string $binFileName,
         string $buildDirectory,
-        PharFilesFinder $pharFilesFinder,
         SymfonyStyle $symfonyStyle,
-        PathNormalizer $pathNormalizer,
-        FinderToPharAdder $finderToPharAdder
+        PathNormalizer $pathNormalizer
     ) {
         $this->pharName = $pharName;
-        $this->pharFilesFinder = $pharFilesFinder;
+        $this->pharBaseName = basename($pharName);
+        $this->pharDirName = dirname($pharName);
         $this->binFileName = $binFileName;
         $this->symfonyStyle = $symfonyStyle;
         $this->pathNormalizer = $pathNormalizer;
-        $this->finderToPharAdder = $finderToPharAdder;
-        $this->buildDirectory = realpath($buildDirectory);
+        $this->buildPharDirectory = realpath($buildDirectory);
     }
 
     public function compile(): void
     {
-        $this->symfonyStyle->note(sprintf('Starting PHAR build in "%s" directory', $this->buildDirectory));
+        $this->symfonyStyle->note(sprintf('Starting PHAR build in "%s" directory', $this->buildPharDirectory));
+
+        $this->ensureBuildDirExists();
 
         // flags: KEY_AS_PATHNAME - use relative paths from Finder keys
-        $phar = new Phar($this->pharName, FilesystemIterator::KEY_AS_PATHNAME, $this->pharName);
+        $phar = new Phar($this->pharName, FilesystemIterator::KEY_AS_PATHNAME, $this->pharBaseName);
         $phar->setSignatureAlgorithm(Phar::SHA1);
         $phar->startBuffering();
 
-        // use only dev deps + rebuild dump autoload
-//        $this->symfonyStyle->note('Removing dev packages from composer');
-//        $process = new Process('composer update --no-dev', $buildDirectory);
-//        $process->run();
-
-        // dump autoload
-//        $this->symfonyStyle->note('Dumping new composer autoload');
-//        $process = new Process('composer dump-autoload --optimize', $buildDirectory);
-//        $process->run();
+        $this->symfonyStyle->note(sprintf('Adding files from directory %s', $this->buildPharDirectory));
 
-        $finder = $this->pharFilesFinder->createForDirectory($this->buildDirectory);
-
-        $fileCount = $this->getFileCountFromFinder($finder);
-        $this->symfonyStyle->note(sprintf('Adding %d files', $fileCount));
-        $this->symfonyStyle->progressStart($fileCount);
-
-        $this->finderToPharAdder->addFinderToPhar($finder, $phar);
+        $phar->buildFromDirectory($this->buildPharDirectory);
 
         $this->symfonyStyle->newLine(2);
         $this->symfonyStyle->note('Adding bin');
-        $this->addRectorBin($phar, $this->buildDirectory);
+        $this->addRectorBin($phar, $this->buildPharDirectory);
 
         $this->symfonyStyle->note('Setting stub');
         $phar->setStub($this->getStub());
@@ -106,11 +89,6 @@ public function compile(): void
         $timestamps = new Timestamps($this->pharName);
         $timestamps->save($this->pharName, Phar::SHA1);
 
-        // return dev deps
-//        $this->symfonyStyle->note('Returning dev packages to composer');
-//        $process = new Process('composer update', $buildDirectory);
-//        $process->run();
-
         $this->symfonyStyle->success(sprintf('Phar file "%s" build successful!', $this->pharName));
     }
 
@@ -138,7 +116,7 @@ private function getStub(): string
 __HALT_COMPILER();
 EOF;
 
-        return sprintf($stubTemplate, $this->pharName, $this->pharName, $this->binFileName);
+        return sprintf($stubTemplate, $this->pharBaseName, $this->pharName, $this->binFileName);
     }
 
     private function removeShebang(string $content): string
@@ -146,11 +124,6 @@ private function removeShebang(string $content): string
         return preg_replace('~^#!/usr/bin/env php\s*~', '', $content);
     }
 
-    private function getFileCountFromFinder(Finder $finder): int
-    {
-        return count(iterator_to_array($finder->getIterator()));
-    }
-
     private function ensureBinFileExists(string $binFilePath): void
     {
         if (file_exists($binFilePath)) {
@@ -162,4 +135,13 @@ private function ensureBinFileExists(string $binFilePath): void
             $binFilePath
         ));
     }
+
+    private function ensureBuildDirExists(): void
+    {
+        if (! is_dir($this->pharDirName) && ! mkdir($this->pharDirName, 0777, true) && ! is_dir($this->pharDirName)) {
+            throw new BuildDirNotCreatedException(
+                sprintf('Directory "%s" was not created', $this->pharDirName)
+            );
+        }
+    }
 }
diff --git a/packages/PharBuilder/src/Exception/BuildDirNotCreatedException.php b/packages/PharBuilder/src/Exception/BuildDirNotCreatedException.php
new file mode 100644
index 000000000000..6b8f23a3ef90
--- /dev/null
+++ b/packages/PharBuilder/src/Exception/BuildDirNotCreatedException.php
@@ -0,0 +1,9 @@
+<?php declare(strict_types=1);
+
+namespace Rector\PharBuilder\Exception;
+
+use Exception;
+
+final class BuildDirNotCreatedException extends Exception
+{
+}
diff --git a/packages/PharBuilder/src/Filesystem/PharFilesFinder.php b/packages/PharBuilder/src/Filesystem/PharFilesFinder.php
deleted file mode 100644
index 40f8b7c2d80f..000000000000
--- a/packages/PharBuilder/src/Filesystem/PharFilesFinder.php
+++ /dev/null
@@ -1,35 +0,0 @@
-<?php declare(strict_types=1);
-
-namespace Rector\PharBuilder\Filesystem;
-
-use Closure;
-use Symfony\Component\Finder\Finder;
-use Symfony\Component\Finder\SplFileInfo;
-
-final class PharFilesFinder
-{
-    public function createForDirectory(string $directory): Finder
-    {
-        return (new Finder())
-            ->files()
-            ->ignoreVCS(true)
-            ->name('*.{yml,php}')
-            // "in()" and "path()" have to be split to make SplFileInfo "getRelativePathname()" get path from $directory
-            ->in($directory)
-            ->path('#(bin|src|packages)#') // |vendor
-            ->exclude(
-                ['tests', 'docs', 'Tests', 'Testing', 'phpunit', 'sebastianbergman', 'vendor', 'packages/PharBuilder']
-            )
-            ->sort($this->sortFilesByName());
-    }
-
-    private function sortFilesByName(): Closure
-    {
-        return function (SplFileInfo $firstFileInfo, SplFileInfo $secondFileInfo) {
-            return strcmp(
-                strtr($firstFileInfo->getRealPath(), '\\', '/'),
-                strtr($secondFileInfo->getRealPath(), '\\', '/')
-            );
-        };
-    }
-}
diff --git a/packages/PharBuilder/src/config/config.yml b/packages/PharBuilder/src/config/config.yml
index ed0ef64881df..539948836423 100644
--- a/packages/PharBuilder/src/config/config.yml
+++ b/packages/PharBuilder/src/config/config.yml
@@ -1,8 +1,8 @@
 parameters:
     # customizable (via %ENV()?)
-    pharName: 'rector.phar'
+    pharName: 'build/rector.phar'
     binFileName: 'bin/rector'
-    buildDirectory: '%kernel.root_dir%/../../../..'
+    buildDirectory: '%kernel.root_dir%/../../../../build-phar'
 
 services:
     _defaults:
diff --git a/packages/PharBuilder/src/config/rector.yml b/packages/PharBuilder/src/config/rector.yml
new file mode 100644
index 000000000000..052a746086fc
--- /dev/null
+++ b/packages/PharBuilder/src/config/rector.yml
@@ -0,0 +1,7 @@
+parameters:
+    prefix: 'RectorPhar'
+
+services:
+    Rector\Rector\Dynamic\NamespaceReplacerRector:
+        $oldToNewNamespaces:
+            'Jean85': '%prefix%Jean85'
\ No newline at end of file
diff --git a/phpunit.xml b/phpunit.xml
index d1e8d8a6827b..9746c13162e3 100644
--- a/phpunit.xml
+++ b/phpunit.xml
@@ -11,5 +11,9 @@
             <directory>packages/*/tests</directory>
             <exclude>tests/Phar</exclude>
         </testsuite>
+        <!-- only Phar -->
+        <testsuite name="phar-build">
+            <directory>tests/Phar</directory>
+        </testsuite>
     </testsuites>
 </phpunit>
diff --git a/tests/Phar/GlobResourceTest.php b/tests/Phar/GlobResourceTest.php
new file mode 100644
index 000000000000..bfe5d7ae250e
--- /dev/null
+++ b/tests/Phar/GlobResourceTest.php
@@ -0,0 +1,16 @@
+<?php declare(strict_types=1);
+
+namespace Rector\Tests\Phar;
+
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\Config\Resource\GlobResource;
+
+final class GlobResourceTest extends TestCase
+{
+    public function testGlobResource(): void
+    {
+        $resource = new GlobResource('phar://' . __DIR__ . '/Source/rector.phar/src/', '', true);
+
+        $this->assertNotCount(0, $resource);
+    }
+}
diff --git a/tests/Phar/PharTest.php b/tests/Phar/PharTest.php
index b2f11512ee2b..95e868abf614 100644
--- a/tests/Phar/PharTest.php
+++ b/tests/Phar/PharTest.php
@@ -12,12 +12,13 @@ final class PharTest extends TestCase
 {
     public function testBox(): void
     {
-        $rectorPharLocation = __DIR__ . '/../../rector.phar';
+        $rectorPharLocation = __DIR__ . '/../../build/rector.phar';
         $this->assertFileExists($rectorPharLocation);
 
         $process = new Process($rectorPharLocation);
         $exitCode = $process->run();
 
+        // binary needed for this tests
         $this->assertSame('', $process->getErrorOutput());
         $this->assertSame(1, $exitCode);
     }
diff --git a/tests/Phar/Source/rector.phar b/tests/Phar/Source/rector.phar
new file mode 100644
index 000000000000..779fad1d6b70
Binary files /dev/null and b/tests/Phar/Source/rector.phar differ