diff --git a/srlp/msys/__init__.py b/srlp/msys/__init__.py
deleted file mode 100644
index b8023d8..0000000
--- a/srlp/msys/__init__.py
+++ /dev/null
@@ -1 +0,0 @@
-__version__ = '0.0.1'
diff --git a/srlp/msys/__main__.py b/srlp/msys/__main__.py
deleted file mode 100755
index faea166..0000000
--- a/srlp/msys/__main__.py
+++ /dev/null
@@ -1,52 +0,0 @@
-#! /usr/bin/env python3
-
-import hashlib
-import os
-import sys
-
-import arguments
-import local
-import synchronization
-
-
-def build():
-    pass
-
-
-def check():
-    packages = []
-    broken = []
-    lo = local.Local()
-    for architecture in lo:
-        for subsystem in architecture:
-            for package in subsystem.catalog.packages.values():
-                packages.append((subsystem, package))
-    for index, items in enumerate(packages):
-        print('\r', index, '/', len(packages), '←', 'checked', end='')
-        subsystem, package = items
-        path = os.path.join(subsystem.path, package.filename)
-        with open(path, 'br') as f:
-            hash = hashlib.sha256(f.read()).hexdigest()
-            if hash != package.sha256sum:
-                broken.append(package)
-    print()
-    print('', str(len(broken)).rjust(len(str(len(packages)))),
-          '/', len(packages), '←', 'broken')
-
-
-def info():
-    print(local.Local())
-
-
-def sync():
-    sync = synchronization.Synchronization()
-    print(sync)
-    sync.run()
-
-
-def main():
-    getattr(sys.modules[__name__], arguments.action)()
-
-
-if __name__ == '__main__':
-    main()
diff --git a/srlp/msys/architecture.py b/srlp/msys/architecture.py
deleted file mode 100644
index 78b9fb2..0000000
--- a/srlp/msys/architecture.py
+++ /dev/null
@@ -1,36 +0,0 @@
-import os
-
-import arguments
-import distribution
-import subsystem
-
-MAIN = 'x86_64'
-
-ARCHITECTURES = {
-    MAIN:   (64, [subsystem.MAIN, 'clang64', 'mingw64', 'ucrt64']),
-    'i686': (32, [subsystem.MAIN, 'clang32', 'mingw32']),
-}
-
-
-class Architecture:
-    def __init__(self, repository, name):
-        self.repository = repository
-        self.name = name
-        self.bits, subsystems = ARCHITECTURES[self.name]
-        self.distribution = distribution.Distribution(self)
-        self.subsystems = {s: subsystem.SubSystem(self, s)
-                           for s in [f if f == subsystem.MAIN
-                                     else f'{f}{self.bits}'
-                                     for f in arguments.subsystems]
-                           if s in subsystems}
-
-    def __iter__(self):
-        return self.subsystems.values().__iter__()
-
-    def __str__(self):
-        lines = [
-            f'      Name: {self.name}',
-            f'      Bits: {self.bits}',
-            f'Subsystems: {subsystem.name for subsystem in self}',
-        ]
-        return os.linesep.join(lines)
diff --git a/srlp/msys/arguments.py b/srlp/msys/arguments.py
deleted file mode 100644
index 84fd24b..0000000
--- a/srlp/msys/arguments.py
+++ /dev/null
@@ -1,97 +0,0 @@
-import argparse
-import os
-
-import architecture
-import remote as r
-import subsystem
-
-ACTION = 'action'
-ARCHITECTURES = 'architectures'
-COMPRESSION = 'compression'
-DIRECTORY = 'directory'
-FILESYSTEM = 'filesystem'
-REMOTE = 'remote'
-SUBSYSTEMS = 'subsystems'
-TEMPORARY = 'temporary'
-THREADS = 'threads'
-VERBOSE = 'verbose'
-
-
-class Formatter(argparse.RawTextHelpFormatter,
-                argparse.ArgumentDefaultsHelpFormatter):
-    pass
-
-
-def parse():
-    parser = argparse.ArgumentParser(formatter_class=Formatter)
-
-    parser.add_argument(f'-{VERBOSE[0]}', f'--{VERBOSE}', type=bool, help='''\
-verbose output
-''')
-
-    parser.add_argument(f'-{DIRECTORY[0]}', f'--{DIRECTORY}', type=str,
-                        help='''\
-msys repository's directory
-''')
-    parser.add_argument(f'--{TEMPORARY}', type=str, help='''\
-msys repository's temporary directory
-''')
-    parser.add_argument(f'-{THREADS[0]}', f'--{THREADS}', type=int, help='''\
-number of threads to use
-''')
-    parser.add_argument(f'{ACTION}', type=str, nargs='?',
-                        choices=['build', 'check', 'info', 'sync'], help='''\
-action to perform onto msys repository
-''')
-
-    sync = parser.add_argument_group('sync')
-    sync.add_argument(f'-{REMOTE[0]}', f'--{REMOTE}', type=str, help='''\
-msys remote repository's location
-''')
-    sync.add_argument(f'-{ARCHITECTURES[0]}', f'--{ARCHITECTURES}', type=str,
-                      nargs='+', choices=architecture.ARCHITECTURES.keys(),
-                      help='''\
-list of architectures to sync
-''')
-    sync.add_argument(f'-{SUBSYSTEMS[0]}', f'--{SUBSYSTEMS}', type=str,
-                      nargs='+', choices=subsystem.FAMILIES, help='''\
-list of subsystems to sync
-''')
-
-    build = parser.add_argument_group('build')
-    parser.add_argument(f'-{FILESYSTEM[0]}', f'--{FILESYSTEM}', type=str,
-                        help='''\
-directory containing modifications applying to filesystem
-''')
-    build.add_argument(f'-{COMPRESSION[0]}', f'--{COMPRESSION}', type=str,
-                       choices=['gz', 'xz', 'zst'], help='''\
-compression applying to archive
-''')
-
-    parser.set_defaults(
-        directory=os.curdir,
-        temporary='tmp',
-        threads=2,
-
-        action='info',
-
-        remote=r.MAIN,
-        architectures=[architecture.MAIN],
-        subsystems=[subsystem.MAIN, 'mingw'],
-
-        filesystem='fs',
-        compression='zst',
-    )
-
-    return vars(parser.parse_args())
-
-
-D = parse()
-
-action = D[ACTION]
-architectures = D[ARCHITECTURES]
-directory = D[DIRECTORY]
-remote = D[REMOTE]
-subsystems = D[SUBSYSTEMS]
-temporary = D[TEMPORARY]
-threads = D[THREADS]
diff --git a/srlp/msys/catalog.py b/srlp/msys/catalog.py
deleted file mode 100644
index a096d34..0000000
--- a/srlp/msys/catalog.py
+++ /dev/null
@@ -1,36 +0,0 @@
-import io
-import os
-import tarfile
-
-import package
-
-CATALOG = '.files'
-FILES = 'files'
-PACKAGE = 'desc'
-
-
-class Catalog:
-    def __init__(self, subsystem):
-        self.subsystem = subsystem
-        self.path = os.path.join(self.subsystem.path,
-                                 f'{self.subsystem.name}{CATALOG}')
-        self.load()
-
-    def load(self):
-        binary = self.subsystem.architecture.repository.get_file(self.path)
-        f = io.BytesIO(binary)
-        archive = tarfile.open(fileobj=f)
-        m = {}
-        packages = {}
-        for member in archive.getmembers():
-            directory, *file = member.name.split(os.sep)
-            if file:
-                d = m[directory]
-                d[file[0]] = archive.extractfile(member).read()
-                if len(d) == 2:
-                    p = package.Package(d[PACKAGE], d[FILES])
-                    packages[p.name] = p
-            else:
-                m[directory] = {}
-        archive.close()
-        self.packages = packages
diff --git a/srlp/msys/distribution.py b/srlp/msys/distribution.py
deleted file mode 100644
index 64be502..0000000
--- a/srlp/msys/distribution.py
+++ /dev/null
@@ -1,23 +0,0 @@
-import os
-
-ARCHIVE = '.tar.xz'
-DISTRIBUTION = 'distrib'
-
-
-class Distribution:
-    def __init__(self, architecture):
-        self.architecture = architecture
-        self.path = os.path.join(DISTRIBUTION, self.architecture.name)
-        self.load()
-
-    def load(self):
-        files = self.architecture.repository.get_files(self.path)
-        self.archives = [f for f in files if f.endswith(ARCHIVE)]
-        self.archive = self.archives[-1]
-
-    def __str__(self):
-        lines = [
-            f'Architecture: {self.architecture.name}',
-            f'        Path: {self.path}',
-        ]
-        return os.linesep.join(lines)
diff --git a/srlp/msys/file.py b/srlp/msys/file.py
deleted file mode 100644
index 8100b1e..0000000
--- a/srlp/msys/file.py
+++ /dev/null
@@ -1,20 +0,0 @@
-import os
-
-
-class File:
-    def __init__(self, remote, name, size, local, hash):
-        self.remote = remote
-        self.name = name
-        self.size = size
-        self.local = local
-        self.hash = hash
-
-    def __str__(self):
-        lines = [
-            f'Remote: {self.remote}',
-            f'  Name: {self.name}',
-            f'  Size: {self.size}',
-            f' Local: {self.local}',
-            f'  Hash: {self.hash}',
-        ]
-        return os.linesep.join(lines)
diff --git a/srlp/msys/hypertext.py b/srlp/msys/hypertext.py
deleted file mode 100644
index fad9918..0000000
--- a/srlp/msys/hypertext.py
+++ /dev/null
@@ -1,27 +0,0 @@
-import html.parser
-import requests
-
-CHARSET = 'u8'
-
-
-class Parser(html.parser.HTMLParser):
-    def __init__(self):
-        self.links = []
-        super().__init__()
-
-    def handle_starttag(self, tag, attributes):
-        if tag == 'a':
-            self.links.extend(
-                [v for k, v in attributes if k == 'href'])
-
-
-class HyperText:
-    def __init__(self, location):
-        self.location = location
-        self.load()
-
-    def load(self):
-        hypertext = requests.get(self.location).content.decode(CHARSET)
-        parser = Parser()
-        parser.feed(hypertext)
-        self.links = parser.links
diff --git a/srlp/msys/local.py b/srlp/msys/local.py
deleted file mode 100644
index d1af64f..0000000
--- a/srlp/msys/local.py
+++ /dev/null
@@ -1,31 +0,0 @@
-import datetime
-import os
-
-import arguments
-import repository
-
-
-class Local(repository.Repository):
-    def __init__(self):
-        super().__init__(arguments.directory)
-        self.temporary = arguments.temporary
-
-    def get_file(self, path):
-        with open(os.path.join(self.location, path), 'br') as f:
-            return f.read()
-
-    def get_files(self, path):
-        *_, files = next(os.walk(os.path.join(self.location, path)))
-        return files
-
-    def get_temporary(self):
-        return os.path.join(self.temporary,
-                            datetime.datetime.now()
-                            .strftime('%Y%m%d%H%M%S'))
-
-    def __str__(self):
-        lines = [
-            super().__str__(),
-            f'Temporary: {self.temporary}',
-        ]
-        return os.linesep.join(lines)
diff --git a/srlp/msys/package.py b/srlp/msys/package.py
deleted file mode 100644
index c768be3..0000000
--- a/srlp/msys/package.py
+++ /dev/null
@@ -1,28 +0,0 @@
-import os
-
-CHARSET = 'u8'
-KEY = '%'
-SEPARATOR = f'{os.linesep}{os.linesep}'
-
-
-class Package:
-    def __init__(self, package, files):
-        for binary in [package, files]:
-            text = binary.decode(CHARSET).strip()
-            for item in text.split(SEPARATOR):
-                line, *lines = item.split(os.linesep)
-                key = line.split(KEY)[1].lower()
-                if len(lines) == 1:
-                    value = lines[0]
-                else:
-                    value = lines
-                setattr(self, key, value)
-
-    def __str__(self):
-        lines = [
-            f'    Name: {self.name}',
-            f'FileName: {self.filename}',
-            f'    Size: {self.csize}',
-            f'    Hash: {self.sha256sum}',
-        ]
-        return os.linesep.join(lines)
diff --git a/srlp/msys/readme.md b/srlp/msys/readme.md
deleted file mode 100644
index 6939b25..0000000
--- a/srlp/msys/readme.md
+++ /dev/null
@@ -1,32 +0,0 @@
-# Minimal System Repository
-
-A tool to handle local/remote msys/mingw repositories.
-
-## Features
-
-* [ ] display information
-* [ ] synchronize data
-    * [ ] fetch remote catalogs
-    * [ ] download packages
-        * [ ] single threading
-        * [ ] multi threading
-    * [ ] generate signatures from catalogs
-* [ ] check integrity
-    * [ ] catalogs
-    * [ ] packages
-        * [x] single threading
-        * [ ] multi threading
-        * [ ] progress bars
-* [ ] build archive
-    * [ ] get base file system
-        * [ ] extract from distribution
-        * [ ] bootstrap mintty, msys, pacman
-    * [ ] apply configuration
-    * [ ] archive directory
-* [ ] build dependency graph
-    * [ ] generate graphviz diagram
-    * [ ] render final image
-
-## Info
-
-* pacman needs .db catalog, but .files seems optional
diff --git a/srlp/msys/remote.py b/srlp/msys/remote.py
deleted file mode 100644
index 47bb8ce..0000000
--- a/srlp/msys/remote.py
+++ /dev/null
@@ -1,25 +0,0 @@
-import os
-import requests
-
-import arguments
-import hypertext
-import repository
-
-MAIN = 'https://repo.msys2.org'
-
-
-class Remote(repository.Repository):
-    def __init__(self):
-        super().__init__(arguments.remote)
-
-    def get_file(self, path):
-        return requests.get(os.path.join(self.location, path)).content
-
-    def get_files(self, path):
-        return hypertext.HyperText(os.path.join(self.location, path)).links
-
-    def __str__(self):
-        lines = [
-            super().__str__(),
-        ]
-        return os.linesep.join(lines)
diff --git a/srlp/msys/repository.py b/srlp/msys/repository.py
deleted file mode 100644
index c320d98..0000000
--- a/srlp/msys/repository.py
+++ /dev/null
@@ -1,21 +0,0 @@
-import os
-
-import architecture
-import arguments
-
-
-class Repository:
-    def __init__(self, location):
-        self.location = location
-        self.architectures = [architecture.Architecture(self, a)
-                              for a in arguments.architectures]
-
-    def __iter__(self):
-        return self.architectures.__iter__()
-
-    def __str__(self):
-        lines = [
-            f'     Location: {self.location}',
-            f'Architectures: {[architecture.name for architecture in self]}',
-        ]
-        return os.linesep.join(lines)
diff --git a/srlp/msys/subsystem.py b/srlp/msys/subsystem.py
deleted file mode 100644
index e22933f..0000000
--- a/srlp/msys/subsystem.py
+++ /dev/null
@@ -1,32 +0,0 @@
-import os
-
-import catalog
-
-CRT = 'mingw'
-MAIN = 'msys'
-
-FAMILIES = [MAIN, 'clang', 'mingw', 'ucrt']
-
-
-class SubSystem:
-    def __init__(self, architecture, name):
-        self.architecture = architecture
-        self.name = name
-        # path
-        list = []
-        if self.name != MAIN:
-            list.append(CRT)
-        list.append(self.name)
-        if self.name == MAIN:
-            list.append(self.architecture.name)
-        self.path = os.path.join(*list)
-        # catalog
-        self.catalog = catalog.Catalog(self)
-
-    def __str__(self):
-        lines = [
-            f'Architecture: {self.architecture.name}',
-            f'        Name: {self.name}',
-            f'        Path: {self.path}',
-        ]
-        return os.linesep.join(lines)
diff --git a/srlp/msys/synchronization.py b/srlp/msys/synchronization.py
deleted file mode 100644
index 9339efc..0000000
--- a/srlp/msys/synchronization.py
+++ /dev/null
@@ -1,44 +0,0 @@
-import os
-import shutil
-
-import arguments
-import file
-import local
-import remote
-
-
-class Synchronization:
-    def __init__(self):
-        self.remote = remote.Remote()
-        self.repository = local.Local()
-        self.temporary = self.repository.get_temporary()
-        self.threads = arguments.threads
-
-    def run(self):
-        for architecture in self.remote:
-            for subsystem in architecture:
-                for _, package in sorted(subsystem.catalog.packages.items()):
-                    f = file.File(
-                        os.path.join(self.remote.location, subsystem.path),
-                        package.name,
-                        package.csize,
-                        os.path.join(self.repository.location, subsystem.path),
-                        package.sha256sum,
-                    )
-                    print()
-                    print(f)
-        tmp = os.path.join(self.repository.location,
-                           self.repository.get_temporary())
-        os.makedirs(tmp)
-        # clean temporary directory
-        shutil.rmtree(tmp)
-
-    def __str__(self):
-        lines = [
-            str(self.remote),
-            str(),
-            str(self.repository),
-            str(),
-            f'Temporary: {self.temporary}',
-        ]
-        return os.linesep.join(lines)