diff --git a/.github/dependabot.yml b/.github/dependabot.yml
new file mode 100644
index 00000000..be006de9
--- /dev/null
+++ b/.github/dependabot.yml
@@ -0,0 +1,13 @@
+# Keep GitHub Actions up to date with GitHub's Dependabot...
+# https://docs.github.com/en/code-security/dependabot/working-with-dependabot/keeping-your-actions-up-to-date-with-dependabot
+# https://docs.github.com/en/code-security/dependabot/dependabot-version-updates/configuration-options-for-the-dependabot.yml-file#package-ecosystem
+version: 2
+updates:
+  - package-ecosystem: github-actions
+    directory: /
+    groups:
+      github-actions:
+        patterns:
+          - "*"  # Group all Actions updates into a single larger pull request
+    schedule:
+      interval: weekly
diff --git a/.github/workflows/check-code-and-run-tests.yml b/.github/workflows/check-code-and-run-tests.yml
new file mode 100644
index 00000000..36c971bd
--- /dev/null
+++ b/.github/workflows/check-code-and-run-tests.yml
@@ -0,0 +1,45 @@
+name: Check code and run tests
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  ruff:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v4
+    - run: pip install --user ruff
+    - run: ruff check --ignore=E401,E402,E501,E701,E721,E722,E731,E741,F401,F403,F405,F523,F524,F811,F841
+                      --output-format=github --target-version=py310 .
+  build:
+    runs-on: macos-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version: ["3.10"]  # ["2.7", "3.6", "3.10"]
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v4
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v5
+      with:
+        python-version: ${{ matrix.python-version }}
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip wheel setuptools
+        pip install ".[testing]"
+    - name: Analysing the code with flake8
+      run: |
+        flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
+        flake8 . --count --exit-zero --max-complexity=10 --max-line-length=88 --statistics
+    - name: Running tests
+      run: |
+        pytest --version
+        # make install test work...
+        export PYTHONPATH=$(python -m site --user-site) 
+        pytest tests/ --ignore=tests/system/data/ --showlocals --verbose --show-capture=all --log-level=debug
+    
diff --git a/.github/workflows/python-package.yml b/.github/workflows/python-package.yml
deleted file mode 100644
index c55fd813..00000000
--- a/.github/workflows/python-package.yml
+++ /dev/null
@@ -1,42 +0,0 @@
-# This workflow will install Python dependencies, run tests and lint with a variety of Python versions
-# For more information see: https://help.github.com/actions/language-and-framework-guides/using-python-with-github-actions
-
-name: Python package
-
-on:
-  push:
-    branches: [ master, dev ]
-  pull_request:
-    branches: [ master, dev ]
-
-jobs:
-  build:
-
-    runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        python-version: [2.7, 3.6, 3.8]
-
-    steps:
-    - uses: actions/checkout@v2
-    - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v2
-      with:
-        python-version: ${{ matrix.python-version }}
-    - name: Install dependencies
-      run: |
-        python -m pip install --upgrade pip
-        pip install --upgrade flake8>=3.7.9 pyparsing==2.4.4 pytest==4.6.6
-    - name: Lint with flake8
-      run: |
-        # stop the build if there are Python syntax errors or undefined names
-        flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
-        # exit-zero treats all errors as warnings.
-        flake8 . --count --exit-zero --max-complexity=10 --max-line-length=88 --statistics
-        # show pytest version
-        py.test --version
-        # install
-        pip install ".[testing]"
-    - name: Test with pytest
-      run: |
-        pytest tests/ --ignore=tests/system/data/ --showlocals --verbose --show-capture=all --log-level=debug
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index a7eaa028..00000000
--- a/.travis.yml
+++ /dev/null
@@ -1,23 +0,0 @@
-language: python
-python:
-  - "2.7"
-  - "3.6"
-  - "3.8"
-jobs:
-  allow_failures:
-    - python: "3.8"
-# command to install dependencies
-install:
-  - "pip install --upgrade flake8>=3.7.9 pyparsing==2.4.4 pytest==4.6.6"
-before_script:
-  # stop the build if there are Python syntax errors or undefined names
-  - flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
-  # exit-zero treats all errors as warnings.
-  - flake8 . --count --exit-zero --max-complexity=10 --max-line-length=88 --statistics
-  # show pytest version
-  - py.test --version
-  # install
-  - pip install ".[testing]"
-# command to run tests
-script: pytest tests/ --ignore=tests/system/data/ --showlocals --verbose --show-capture=all --log-level=debug
-
diff --git a/bin/git.py b/bin/git.py
index 8d563dec..4e36d06f 100644
--- a/bin/git.py
+++ b/bin/git.py
@@ -63,7 +63,7 @@ def call(*args, **kwargs):
 
 if AUTODOWNLOAD_DEPENDENCIES:
     libpath = os.path.join(os.environ['STASH_ROOT'], 'lib')
-    if not libpath in sys.path:
+    if libpath not in sys.path:
         sys.path.insert(1, libpath)
     download_dulwich = False
 
@@ -381,10 +381,10 @@ def git_reset(args):
     commit = ns.commit
     # first arg was really a file
     paths = ns.paths or []
-    if not commit in repo and os.path.exists(commit):  #really specified a path
+    if commit not in repo and os.path.exists(commit):  #really specified a path
         paths = [commit] + paths
         commit = None
-    elif not commit in repo and not commit in repo.branches and not commit in repo.remote_branches and not os.path.exists(
+    elif commit not in repo and commit not in repo.branches and commit not in repo.remote_branches and not os.path.exists(
             commit):
         raise Exception('{} is not a valid commit or file'.format(commit))
     if not commit:
@@ -429,7 +429,7 @@ def get_config_or_prompt(repo, section, name, prompt, save=None):
         value = config.get(section, name)
     except KeyError:
         value = input(prompt).encode()
-        if save == None:
+        if save is None:
             reply = input('Save this setting? [y/n]')
             save = reply == 'y'
         if save:
@@ -496,7 +496,13 @@ def git_commit(args):
 def git_clone(args):
     if len(args) > 0:
         url = args[0]
-        repo = Gittle.clone(args[0], args[1] if len(args) > 1 else os.path.split(args[0])[-1].rstrip('.git'), bare=False)
+        if len(args) > 1:
+            args_1 = args[1]
+        else:
+            args_1 = os.path.split(args[0])[-1]
+            if args_1.endswith('.git'):
+                args_1 = args_1[:-4]
+        repo = Gittle.clone(args[0], args_1, bare=False)
 
         #Set the origin
         config = repo.repo.get_config()
diff --git a/bin/httpserver.py b/bin/httpserver.py
index 3a92ea50..bcba8d23 100644
--- a/bin/httpserver.py
+++ b/bin/httpserver.py
@@ -88,7 +88,7 @@ def deal_post_data(self):
         remainbytes = int(self.headers['content-length'])
         line = self.rfile.readline()
         remainbytes -= len(line)
-        if not boundary in line:
+        if boundary not in line:
             return (False, "Content NOT begin with boundary")
         line = self.rfile.readline()
         remainbytes -= len(line)
diff --git a/bin/mail.py b/bin/mail.py
index bc59b3c3..3db775ce 100644
--- a/bin/mail.py
+++ b/bin/mail.py
@@ -159,7 +159,7 @@ def send(self, sendto='', subject='', attach='', body=' '):
     )
     args = ap.parse_args()
     smail = Mail(CONFIG, args.verbose)
-    if args.e == True:
+    if args.e is True:
         smail.edit_cfg()
     elif args.message or args.file and args.sendto:
         if args.message == '-':
diff --git a/bin/mount.py b/bin/mount.py
index 82226f98..246a085a 100644
--- a/bin/mount.py
+++ b/bin/mount.py
@@ -64,7 +64,7 @@ def list_mounts():
         else:
             manager.enable_patches()
 
-    if not ns.type in FILESYSTEM_TYPES:
+    if ns.type not in FILESYSTEM_TYPES:
         print(_stash.text_color("Error: Unknown Filesystem-Type!", "red"))
         sys.exit(1)
 
diff --git a/bin/mv.py b/bin/mv.py
index 7be6d6a9..8699e1a3 100644
--- a/bin/mv.py
+++ b/bin/mv.py
@@ -30,7 +30,7 @@ def main(args):
                 for src in ns.src:
                     try:
                         # Attempt to move every source into destination
-                        shutil.move(src, os.path.join(ns.dest, os.path.basename(src)))
+                        shutil.move(src, ns.dest)
                     except Exception as err:
                         print("mv: {}: {!s}".format(type(err).__name__, err), file=sys.stderr)
                         status = 1
@@ -44,27 +44,17 @@ def main(args):
         src = ns.src[0]
         if os.path.exists(src):
             # Source must exist
-            if os.path.exists(ns.dest):
-                # If destination exists...
-                if os.path.isdir(ns.dest):
-                    # ...it must be a folder
-                    try:
-                        # Attempt to move source into destination
-                        shutil.move(src, os.path.join(ns.dest, os.path.basename(src)))
-                    except Exception as err:
-                        print("mv: {}: {!s}".format(type(err).__name__, err), file=sys.stderr)
-                        status = 1
-                else:
-                    # Won't overwrite unasked
-                    print("mv: {}: file exists".format(ns.dest), file=sys.stderr)
-            else:
-                # Destination doesn't exist
+            if not os.path.isfile(ns.dest):
+            # Python will rename source if it doesn't exists
+            # And will move source into destination if it is a directory
                 try:
-                    # Try to rename source to destination
                     shutil.move(src, ns.dest)
                 except Exception as err:
                     print("mv: {}: {!s}".format(type(err).__name__, err), file=sys.stderr)
                     status = 1
+            else:
+                # Won't overwrite unasked
+                print("mv: {}: file exists".format(ns.dest), file=sys.stderr)
         else:
             print("mv: {}: no such file or directory".format(src), file=sys.stderr)
             status = 1
diff --git a/bin/ping.py b/bin/ping.py
index 35fef910..f9ca6d33 100644
--- a/bin/ping.py
+++ b/bin/ping.py
@@ -218,7 +218,7 @@ def verbose_ping(dest_addr, timeout=2, count=4, interval=1.0):
             print("failed. (socket error: '%s')" % e[1])
             break
 
-        if delay == None:
+        if delay is None:
             print("failed. (timeout within %ssec.)" % timeout)
         else:
             time.sleep(min(0, interval - delay))
diff --git a/bin/pip.py b/bin/pip.py
index 7031ae5b..44afe882 100644
--- a/bin/pip.py
+++ b/bin/pip.py
@@ -45,7 +45,9 @@
 SITE_PACKAGES_FOLDER = _stash.libdist.SITE_PACKAGES_FOLDER
 OLD_SITE_PACKAGES_FOLDER = _stash.libdist.SITE_PACKAGES_FOLDER_6
 BUNDLED_MODULES = _stash.libdist.BUNDLED_MODULES
-BLACKLIST_PATH = os.path.join(os.path.expandvars("$STASH_ROOT"), "data", "pip_blacklist.json")
+BLOCKLIST_PATH = os.path.join(os.path.expandvars("$STASH_ROOT"), "data", "pip_blocklist.json")
+PIP_INDEX_FILE = os.path.join(SITE_PACKAGES_FOLDER,'pip_index.json')
+PIP_INFO_FILE = os.path.join(SITE_PACKAGES_FOLDER, '.package_info', '%s.json')
 
 # Some packages use wrong name for their dependencies
 PACKAGE_NAME_FIXER = {
@@ -59,7 +61,7 @@
 FLAG_DIST_ALLOW_WHL = 2
 FLAG_DIST_PREFER_SRC = 4
 FLAG_DIST_PREFER_WHL = 8
-FLAG_IGNORE_BLACKLIST = 16
+FLAG_IGNORE_BLOCKLIST = 16
 DEFAULT_FLAGS = FLAG_DIST_ALLOW_SRC | FLAG_DIST_ALLOW_WHL | FLAG_DIST_PREFER_WHL
 
 
@@ -82,16 +84,16 @@ class PackageAlreadyInstalled(PipError):
     pass
 
 
-class PackageBlacklisted(PipError):
+class PackageBlocklisted(PipError):
     """
-    Error raised when a package is fataly blacklisted
-    :param pkg_name: name of blacklisted package
+    Error raised when a package is fataly blocklisted
+    :param pkg_name: name of blocklisted package
     :type pkg_name: str
-    :param reason: reason for blacklisting
+    :param reason: reason for blocklisting
     :type reason: str
     """
     def __init__(self, pkg_name, reason):
-        s = "Package '{}' blacklisted. Reason: {}".format(pkg_name, reason)
+        s = "Package '{}' blocklisted. Reason: {}".format(pkg_name, reason)
         PipError.__init__(self, s)
 
 
@@ -213,6 +215,116 @@ def __getattr__(self, item):
                 return PackageFinder.find
         return OmniClass()
 
+def get_requires(package, index_file=PIP_INDEX_FILE):
+    """
+    get require of the package
+    :param package: package name
+    :type package: str
+    :return: a list of requires package
+    :rtype: list
+    """
+    if os.path.exists(index_file):
+        with open(index_file) as f:
+            index=json.load(f)
+            try:
+                return index[package]
+            except KeyError:# no such package in index file
+                raise PipError("Cannot find packages in index file. Try to using 'pip dev update-index' to update index file")
+
+    else:
+        raise PipError("Cannot find index file. Try to using 'pip dev update-index' to update index file")
+
+def get_req_by(package, index_file=PIP_INDEX_FILE):
+    """
+    get the packages that require this package
+    :param package: package name
+    :type package: str
+    :return: a list of packages that require this package
+    :rtype: list
+    """
+    if os.path.exists(index_file):
+
+        with open(index_file) as f:
+            index=json.load(f)
+            required_by=[]
+            for pkg, req in index.items():
+                if package in req:
+                    required_by.append(pkg)
+    else:
+
+        raise PipError("Cannot find index file. Try to using 'pip dev update-index' to update index file")
+
+    return required_by 
+
+
+
+
+
+def print_info(package, pip_info_file=PIP_INFO_FILE, site_packages=SITE_PACKAGES_FOLDER):
+    info_file = pip_info_file % package
+    if os.path.exists(info_file):
+        with open(info_file) as f:
+            info = json.load(f)
+        print('Name: {}'.format(info['name']))
+        print('Version: {}'.format(info['version']))
+        print('Summary: {}'.format(info['summary']))
+        print('Home-page: {}'.format(info['project_urls']['Homepage']))
+        print('Author: {}'.format(info['author']))
+        print('Author-email: {}'.format(info['author_email']))
+        print('License: {}'.format(info['license']))
+        print('Location: {}'.format(site_packages))
+       
+        requires = get_requires(package)
+        required_by = get_req_by(package)
+        print('requires: {}'.format(', '.join(requires)))
+        print('required-by: {}'.format(', '.join(required_by)))
+    else: #no info_file
+        print(_stash.text_color('Package not found: {}'.format(package), 'yellow'))
+        
+
+
+def download_info(pkg_name, pip_info_file=PIP_INFO_FILE, site_packages=SITE_PACKAGES_FOLDER):
+    info_file = pip_info_file % pkg_name
+    r=requests.get('https://pypi.python.org/pypi/{}/json'.format(pkg_name))
+    info=r.json()['info']
+    info_folder = os.path.split(info_file)[0]
+    if not os.path.exists(info_folder):
+        os.mkdir(info_folder)
+    with open(info_file, 'w') as f:
+        json.dump(info, f)
+    update_req_index()
+
+def update_req_index(pip_info_file=PIP_INFO_FILE, site_packages=SITE_PACKAGES_FOLDER, index_file=PIP_INDEX_FILE):
+    '''
+    update package requires index file 
+    '''
+    repository = get_repository('pypi', site_packages=site_packages)
+    info_list = repository.list()
+
+    req_index={} # a dict of {package:requires_list}  type:dict of {str:list of str}
+    for package, info in info_list:
+        info_file = pip_info_file % package
+        if os.path.exists(info_file):
+            # load info
+            with open(info_file) as f:
+                info=json.load(f)
+            # filte requires 
+            requires = []
+            try:
+                for req in info['requires_dist']:
+                    if ';' not in req:
+                        #Remove package version
+                        requires.append(req.split(' ')[0])
+            except TypeError:# some package may have no require
+                pass
+            req_index[package]=requires
+
+        else: # info file not exists
+            print(_stash.text_color('Info file of Package {} not found'.format(package), 'yellow'))
+
+
+    with open(index_file, 'w') as f:
+        json.dump(req_index,f)
 
 def fake_module(new_module):
     """
@@ -670,7 +782,7 @@ def _run_setup_file(self, filename, extras=[]):
             if self.verbose:
                 print("Handling commandline script: {s}".format(s=script))
             cmdname = script.replace(os.path.dirname(script), "").replace("/", "")
-            if not "." in cmdname:
+            if '.' not in cmdname:
                 cmdname += ".py"
             scriptpath = os.path.join(source_folder, script)
             with open(scriptpath, "r") as fin:
@@ -981,30 +1093,30 @@ def __init__(self, *args, **kwargs):
         self.pypi = xmlrpclib.ServerProxy('https://pypi.python.org/pypi')
         self.standard_package_names = {}
     
-    def _check_blacklist(self, pkg_name):
+    def _check_blocklist(self, pkg_name):
         """
-        Check if a package is blacklisted.
+        Check if a package is blocklisted.
         The result is a tuple:
-            - element 0 is True if the package is blacklisted
+            - element 0 is True if the package is blocklisted
             - element 1 is the reason
             - element 2 is True if the install should fail due to this
             - element 3 is an optional alternative package to use instead.
         :param pkg_name: name of package to check
         :type pkg_name: str
-        :return: a tuple of (blacklisted, reason, fatal, alt).
+        :return: a tuple of (blocklisted, reason, fatal, alt).
         :rtype: (bool, str, bool, str or None)
         """
-        if (BLACKLIST_PATH is None) or (not os.path.exists(BLACKLIST_PATH)):
-            # blacklist not available
+        if (BLOCKLIST_PATH is None) or (not os.path.exists(BLOCKLIST_PATH)):
+            # blocklist not available
             return (False, "", False, None)
-        with open(BLACKLIST_PATH) as fin:
+        with open(BLOCKLIST_PATH) as fin:
             content = json.load(fin)
-        if pkg_name not in content["blacklist"]:
-            # package not blacklisted
+        if pkg_name not in content["blocklist"]:
+            # package not blocklisted
             return (False, "", False, None)
         else:
-            # package blacklisted
-            reasonid, fatal, alt = content["blacklist"][pkg_name]
+            # package blocklisted
+            reasonid, fatal, alt = content["blocklist"][pkg_name]
             reason = content["reasons"].get(reasonid, reasonid)
             return (True, reason, fatal, alt)
 
@@ -1127,25 +1239,25 @@ def download(self, pkg_name, ver_spec, flags=DEFAULT_FLAGS):
 
         return os.path.join(os.getenv('TMPDIR'), target['filename']), pkg_info
 
-    def install(self, pkg_name, ver_spec, flags=DEFAULT_FLAGS, extras=[]):
+    def install(self, pkg_name, ver_spec, flags=DEFAULT_FLAGS, pip_info_file=PIP_INFO_FILE, extras=[]):
         pkg_name = self.get_standard_package_name(pkg_name)
         
-        # check if package is blacklisted
+        # check if package is blocklisted
         # we only do this for PyPI installs, since non-PyPI installs
         # may have the same pkg name for a different package.
         # TODO: should this be changed?
-        blacklisted, reason, fatal, alt = self._check_blacklist(pkg_name)
-        if blacklisted and not (flags & FLAG_IGNORE_BLACKLIST > 0):
+        blocklisted, reason, fatal, alt = self._check_blocklist(pkg_name)
+        if blocklisted and not (flags & FLAG_IGNORE_BLOCKLIST > 0):
             if fatal:
                 # raise an exception.
                 print(
                     _stash.text_color(
-                        "Package {} is blacklisted and marked fatal. Failing install.".format(pkg_name),
+                        "Package {} is blocklisted and marked fatal. Failing install.".format(pkg_name),
                         "red",
                         )
                     )
                 print(_stash.text_color("Reason: " + reason, "red"))
-                raise PackageBlacklisted(pkg_name, reason)
+                raise PackageBlocklisted(pkg_name, reason)
             elif alt is not None:
                 # an alternative package exposing the same functionality
                 #  and API is known. Print a warning and use this instead.
@@ -1166,17 +1278,24 @@ def install(self, pkg_name, ver_spec, flags=DEFAULT_FLAGS, extras=[]):
                 # we should print a warning, but continue anyway
                 print(
                     _stash.text_color(
-                        "Warning: package '{}' is blacklisted, but marked as non-fatal.".format(pkg_name),
+                        "Warning: package '{}' is blocklisted, but marked as non-fatal.".format(pkg_name),
                         "yellow",
                         )
                     )
                 print("This probably means that the dependency can not be installed, but pythonista ships with the package preinstalled.")
-                print("Reason for blacklisting: " + reason)
+                print("Reason for blocklisting: " + reason)
                 return
         
         if not self.config.module_exists(pkg_name):
             archive_filename, pkg_info = self.download(pkg_name, ver_spec, flags=flags)
             self._install(pkg_name, pkg_info, archive_filename, dependency_flags=flags, extras=extras)
+            # save json file of info
+            info_file = pip_info_file % pkg_name
+            info_folder = os.path.split(info_file)[0]
+            if not os.path.exists(info_folder):
+                os.mkdir(info_folder)
+            with open(info_file, 'w') as f:
+                json.dump(pkg_info, f)
         else:
             # todo: maybe update package?
             raise PackageAlreadyInstalled('Package already installed')
@@ -1435,7 +1554,6 @@ def get_repository(pkg_name, site_packages=SITE_PACKAGES_FOLDER, verbose=False):
 
 if __name__ == '__main__':
     import argparse
-
     ap = argparse.ArgumentParser()
 
     ap.add_argument('--verbose', action='store_true', help='be more chatty')
@@ -1454,6 +1572,10 @@ def get_repository(pkg_name, site_packages=SITE_PACKAGES_FOLDER, verbose=False):
         metavar='sub-command',
         help='"pip sub-command -h" for more help on a sub-command'
     )
+    
+    show_parser = subparsers.add_parser('show', help='show information of package ')
+    show_parser.add_argument('package', help='package name to show')
+    show_parser.add_argument('-f', '--force', action="store_true", dest="forcedownload", help='force to download info file from pypi')
 
     list_parser = subparsers.add_parser('list', help='list packages installed')
 
@@ -1483,7 +1605,7 @@ def get_repository(pkg_name, site_packages=SITE_PACKAGES_FOLDER, verbose=False):
         help="Prefer older binary packages over newer source packages",  # TODO: do we actually check older sources/wheels?
         dest="preferbinary",
     )
-    install_parser.add_argument("--ignore-blacklist", action="store_true", help="Ignore blacklist", dest="ignoreblacklist")
+    install_parser.add_argument("--ignore-blocklist", action="store_true", help="Ignore blocklist", dest="ignoreblocklist")
 
     download_parser = subparsers.add_parser('download', help='download packages')
     download_parser.add_argument(
@@ -1514,6 +1636,9 @@ def get_repository(pkg_name, site_packages=SITE_PACKAGES_FOLDER, verbose=False):
     update_parser = subparsers.add_parser('update', help='update an installed package')
     update_parser.add_argument('packages', nargs="+", help='the package name')
 
+    dev_parser = subparsers.add_parser('dev')
+    dev_parser.add_argument('opt')
+
     ns = ap.parse_args()
     
     if ns.site_packages is None:
@@ -1565,8 +1690,8 @@ def get_repository(pkg_name, site_packages=SITE_PACKAGES_FOLDER, verbose=False):
                 flags = flags | FLAG_DIST_PREFER_WHL | FLAG_DIST_ALLOW_WHL
                 flags = flags & ~FLAG_DIST_PREFER_SRC
             
-            if ns.ignoreblacklist:
-                flags = flags | FLAG_IGNORE_BLACKLIST
+            if ns.ignoreblocklist:
+                flags = flags | FLAG_IGNORE_BLOCKLIST
 
             for requirement in ns.requirements:
                 repository = get_repository(requirement, site_packages=site_packages, verbose=ns.verbose)
@@ -1580,6 +1705,7 @@ def get_repository(pkg_name, site_packages=SITE_PACKAGES_FOLDER, verbose=False):
                     # start with what we have installed (i.e. in the config file)
                     sys.modules['setuptools']._installed_requirements_ = repository.config.list_modules()
                     repository.install(pkg_name, ver_spec, flags=flags, extras=extras)
+                    update_req_index() 
 
         elif ns.sub_command == 'download':
             for requirement in ns.requirements:
@@ -1609,6 +1735,7 @@ def get_repository(pkg_name, site_packages=SITE_PACKAGES_FOLDER, verbose=False):
             for package_name in ns.packages:
                 repository = get_repository('pypi', site_packages=ns.site_packages, verbose=ns.verbose)
                 repository.remove(package_name)
+                update_req_index() 
 
         elif ns.sub_command == 'update':
             for package_name in ns.packages:
@@ -1620,6 +1747,20 @@ def get_repository(pkg_name, site_packages=SITE_PACKAGES_FOLDER, verbose=False):
                     # start with what we have installed (i.e. in the config file)
                     sys.modules['setuptools']._installed_requirements_ = repository.config.list_modules()
                     repository.update(package_name)
+
+        elif ns.sub_command == 'show':
+            if ns.forcedownload:
+                download_info(ns.package, site_packages=ns.site_packages)
+            print_info(ns.package, site_packages=ns.site_packages)
+
+        elif ns.sub_command=='dev':
+            if ns.opt=='update-index':
+                update_req_index()
+                print('index file updated')
+            else:
+                raise PipError('unknow dev option: {}'.format(ns.opt))
+                sys.exit(1)
+
         else:
             raise PipError('unknown command: {}'.format(ns.sub_command))
             sys.exit(1)
diff --git a/core.py b/core.py
index 4515eb63..e9ae7c69 100644
--- a/core.py
+++ b/core.py
@@ -5,7 +5,7 @@
 https://github.com/ywangd/stash
 """
 
-__version__ = '0.7.4'
+__version__ = '0.7.5'
 
 import imp as pyimp  # rename to avoid name conflict with objc_util
 import logging
diff --git a/data/pip_blacklist.json b/data/pip_blocklist.json
similarity index 89%
rename from data/pip_blacklist.json
rename to data/pip_blocklist.json
index 5c96b5f4..665f6826 100644
--- a/data/pip_blacklist.json
+++ b/data/pip_blocklist.json
@@ -10,7 +10,7 @@
     "incompatible_dependency": "This package has one or more dependencies which are incompatible with Pythonista.",
     "bugged": "Installation of this packages is currently critically bugged."
 },
-"blacklist": {
+"blocklist": {
     "stash": ["is_stash", true, null],
     "pip": ["is_pip", true, null],
     "selenium": ["processes", true, null],
@@ -22,6 +22,8 @@
     "pyobjc": ["C", true, null],
     "pyttsx3": ["incompatible_dependency", true, null],
     "futures": ["bugged", true, null],
-    "regex": ["C", true, null]
+    "regex": ["C", true, null],
+    "gevent": ["C", true, null],
+    "grequests": ["incompatible_dependency", true, null]
 }
 }
diff --git a/docs/pip_blacklist.md b/docs/pip_blocklist.md
similarity index 67%
rename from docs/pip_blacklist.md
rename to docs/pip_blocklist.md
index c32a54f8..5432ac23 100644
--- a/docs/pip_blacklist.md
+++ b/docs/pip_blocklist.md
@@ -1,6 +1,6 @@
-#PIP blacklist
+#PIP blocklist
 -----------------------
-Starting with version 0.7.5, StaSh pip includes a blacklist.
+Starting with version 0.7.5, StaSh pip includes a blocklist.
 
 
 It indicates whether a package should not be installed and what reasons
@@ -9,17 +9,17 @@ should be given.
 
 ## Motivation
 
-The reason for this blacklist is the high number of issues regarding
+The reason for this blocklist is the high number of issues regarding
 installation problems of known incompatible packages. I hope that by
-slowly adding packages to the blacklist we can reduce the amount of
+slowly adding packages to the blocklist we can reduce the amount of
 these issues.
 
 
-The blacklist was initially discussed in issue #376.
+The blocklist was initially discussed in issue #376.
 
 
 ## Details
-This blacklist is stored as a JSON file at `$STASH_ROOT/data/pip_blacklist.json`.
+This blocklist is stored as a JSON file at `$STASH_ROOT/data/pip_blocklist.json`.
 It is a dict with two top-level keys:
 
 
@@ -27,14 +27,14 @@ It is a dict with two top-level keys:
 It is used to reduce redundancy of error messages.
 
 
-**`blacklist`** Is a dict mapping packagename (str) to details (list).
-Every package mentioned in a key of the dict is considered blacklisted.
+**`blocklist`** Is a dict mapping packagename (str) to details (list).
+Every package mentioned in a key of the dict is considered blocklisted.
 
 The first (`i=0`) element of the list is the reasonID (str). Use the `reasons` toplevel
 key to determine the actual reason.
 
 The second (`i=1`) element of the list is a bool indicating whether this
-blacklisting is fatal. If true, it is considered fatal. This means that
+blocklisting is fatal. If true, it is considered fatal. This means that
 `pip` should abort the installation. Otherwise it is considered nonfatal.
 This means that `pip` should skip the installation, but continue the install.
 This is useful if the package can not be installed, but Pythonista already
diff --git a/getstash.py b/getstash.py
index 2b94f30f..6c765db0 100644
--- a/getstash.py
+++ b/getstash.py
@@ -29,7 +29,7 @@
         'bin/pythonista.py',
         'bin/cls.py',
         'stash.py',
-        'lib/librunner.py'
+        'lib/librunner.py',
         'system/shui.py',
         'system/shterminal.py',
         'system/dummyui.py',
diff --git a/lib/git/git-branch.py b/lib/git/git-branch.py
index 8b13c483..a29cc3e1 100644
--- a/lib/git/git-branch.py
+++ b/lib/git/git-branch.py
@@ -152,7 +152,7 @@ def format_tracking_branch_desc(repo, branchname):
 def edit_branch_description(branchname, description=None):
     description = description or input('enter description:')
     config = _get_repo().repo.get_config()
-    if not branchname in _get_repo().branches:
+    if branchname not in _get_repo().branches:
         GitError('{} is not an existing branch'.format(branchname))
         config.set(('branch', branchname), 'description', description)
         config.write_to_path()
@@ -284,7 +284,7 @@ def create_branch(new_branch, base_rev, force=False, no_track=False):
     #handle tracking, only if this was a remote
     tracking, remote_branch = (['origin'] + base_rev.split('/'))[-2:]  #branch-> origin/branch.  remote/branch stays as is
     qualified_remote_branch = os.path.sep.join([tracking, remote_branch])
-    if qualified_remote_branch in repo.remote_branches and not base_rev in repo.branches:
+    if qualified_remote_branch in repo.remote_branches and base_rev not in repo.branches:
         if not no_track:
             add_tracking(new_branch, tracking, remote_branch)
         else:
diff --git a/lib/libdist.py b/lib/libdist.py
index 05d9caaa..c27ed478 100644
--- a/lib/libdist.py
+++ b/lib/libdist.py
@@ -38,7 +38,9 @@ def clipboard_set(s):
     # -------------- pip ----------------------
     
     if six.PY3:
-        SITE_PACKAGES_DIR_NAME = "site-packages-3"
+        SITE_PACKAGES_DIR_NAME = "site-packages"
+        if sys.version_info < (3, 10):  # Pythonista < v3.4
+            SITE_PACKAGES_DIR_NAME += "-3"
     else:
         SITE_PACKAGES_DIR_NAME = "site-packages-2"
     SITE_PACKAGES_DIR_NAME_6 = "site-packages"
@@ -146,7 +148,8 @@ def clipboard_set(s):
             pyperclip.copy(s)
     else:
         # use fake implementation
-        global _CLIPBOARD; _CLIPBOARD = u""
+        global _CLIPBOARD
+        _CLIPBOARD = u""
         
         def clipboard_get():
             """
diff --git a/lib/libversion.py b/lib/libversion.py
index bea19377..93c217cd 100644
--- a/lib/libversion.py
+++ b/lib/libversion.py
@@ -323,6 +323,14 @@ def parse_requirement(requirement):
                 extras = []
             else:
                 extras = extra_s.split(",")
+        elif "[" in name:
+            si = name.find("[")
+            extra_s = name[si + 1:-1]
+            name = name[:si]
+            if len(extra_s) == 0:
+                extras = []
+            else:
+                extras = extra_s.split(",") 
         else:
             extras = []
         splitted = specs_s.split(",")
diff --git a/lib/stashutils/mount_manager.py b/lib/stashutils/mount_manager.py
index c3720c02..4f8a95f3 100644
--- a/lib/stashutils/mount_manager.py
+++ b/lib/stashutils/mount_manager.py
@@ -79,7 +79,7 @@ def mount_fsi(self, path, fsi, readonly=False):
     def unmount_fsi(self, path, force=False):
         """unmounts a fsi."""
         path = os.path.abspath(path)
-        if not path in self.path2fs:
+        if path not in self.path2fs:
             raise MountError("Nothing mounted there.")
         fsi, readonly = self.path2fs[path]
         if not force:
diff --git a/lib/stashutils/wheels.py b/lib/stashutils/wheels.py
index eefc41ce..a44c1fa9 100644
--- a/lib/stashutils/wheels.py
+++ b/lib/stashutils/wheels.py
@@ -336,34 +336,51 @@ def read_dependencies_from_METADATA(self, p):
                     if ";" in t:
                         es = t[t.find(";") + 1:].replace('"', "").replace("'", "")
                         t = t[:t.find(";")].strip()
-                        if VersionSpecifier is None:
-                            # libversion not found
-                            print(
-                                "Warning: could not import libversion.VersionSpecifier! Ignoring version and extra dependencies."
-                            )
-                            rq, v, extras = "<libversion not found>", "???", []
-                        else:
-                            rq, v, extras = VersionSpecifier.parse_requirement(es)
-                        if rq == "python_version":
-                            # handle python version dependencies
-                            if not v.match(platform.python_version()):
-                                # dependency NOT required
-                                continue
-                        elif rq == "extra":
-                            # handle extra dependencies
-                            matched = any([v.match(e) for e in self.wheel.extras])
-                            if not matched:
-                                # dependency NOT required
-                                continue
+                        for sub_es in es.split(' and '):
+                            if VersionSpecifier is None:
+                                # libversion not found
+                                print(
+                                    "Warning: could not import libversion.VersionSpecifier! Ignoring version and extra dependencies."
+                                )
+                                rq, v, extras = "<libversion not found>", "???", []
+                            else:
+                                rq, v, extras = VersionSpecifier.parse_requirement(sub_es)
+
+                            if rq == "python_version":
+                                # handle python version dependencies
+                                if not v.match(platform.python_version()):
+                                    # dependency NOT required
+                                    break
+                            elif rq == "extra":
+                                # handle extra dependencies
+                                matched = any([v.match(e) for e in self.wheel.extras])
+                                if not matched:
+                                    # dependency NOT required
+                                    break
+                                else:
+                                    if self.verbose:
+                                        print("Adding dependencies for extras...")
+                            elif rq == "platform_python_implementation":
+                                if not v.match(platform.python_implementation()):
+                                    break
+                            elif rq == "platform_system":
+                                if v.match(platform.system()):
+                                    break
+                            elif rq == "sys_platform":
+                                if not v.match(sys.platform):
+                                    break
                             else:
-                                if self.verbose:
-                                    print("Adding dependencies for extras...")
+                                # unknown requirement for dependency
+                                # warn user and register the dependency
+                                print("Warning: unknown dependency requirement: '{}'".format(rq))
+                                print("Warning: Adding dependency '{}', ignoring requirements for dependency.".format(t))
+                                # do not do anything here- As long as we dont use 'continue', 'break', ... the dependency will be added.
                         else:
-                            # unknown requirement for dependency
-                            # warn user and register the dependency
-                            print("Warning: unknown dependency requirement: '{}'".format(rq))
-                            print("Warning: Adding dependency '{}', ignoring requirements for dependency.".format(t))
-                            # do not do anything here- As long as we dont use 'continue', 'break', ... the dependency will be added.
+                            # no 'break' happens
+                            continue
+                        # a 'break' happens, don't add dependencies and go to next 'line'
+                        break
+
                     dependencies.append(t)
         return dependencies
 
@@ -449,4 +466,4 @@ def extract_into_temppath(self):
     print("dependencies:")
     print(dep)
     if len(dep) > 0:
-        print("WARNING: Dependencies were not installed.")
+        print("WARNING: Dependencies were not installed.")
\ No newline at end of file
diff --git a/setup.py b/setup.py
index fe042802..75cfb149 100644
--- a/setup.py
+++ b/setup.py
@@ -40,17 +40,35 @@
 
 # =================== SETUP ===================
 
-from distutils.core import setup
-from setuptools import find_packages
+from setuptools import setup,find_packages
 
-
-TEST_REQUIREMENTS = [
-    "pyparsing==2.0.1",
-    "pytest>=3.6.0",
-    "flake8>=3.5.0",
-    "pycrypto==2.6",
-    "requests==2.9.1",
-]
+if sys.version_info.major==2:
+    INSTALL_REQUIREMENTS = [
+        "rsa==4.5",
+        "six",        # required by StaSh
+        "pyperclip",  # required by libdist for copy/paste on PC
+        "requests==2.9.1",
+        "pycrypto==2.6",
+        "pyte==0.8.1",
+    ]
+    TEST_REQUIREMENTS = [
+        "pyparsing==2.0.2",
+        "pytest==4.6.11",
+        "flake8>=3.7.9",
+    ]
+else:
+    INSTALL_REQUIREMENTS=[
+        "six",        # required by StaSh
+        "pyperclip",  # required by libdist for copy/paste on PC
+        "requests",
+        "pycrypto",
+        "pyte",
+    ],
+    TEST_REQUIREMENTS = [
+        "pyparsing",
+        "pytest",
+        "flake8>=3.7.9",
+    ]
 
 
 PARENT_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
@@ -125,12 +143,7 @@ def get_stash_version(corepath):
     },
     scripts=[os.path.join(STASH_DIR, "launch_stash.py")],
     zip_safe=False,
-    install_requires=[
-        "six",      # required by StaSh
-        "pyperclip",  # required by libdist for copy/paste on PC
-        "requests",
-        "pyte",
-    ],
+    install_requires=INSTALL_REQUIREMENTS,
     extras_require={
         "testing": TEST_REQUIREMENTS,
     },
diff --git a/system/shcommon.py b/system/shcommon.py
index 1ef2232b..3db5fc6d 100644
--- a/system/shcommon.py
+++ b/system/shcommon.py
@@ -17,7 +17,8 @@
 if IN_PYTHONISTA:
     import plistlib
 
-    _properties = plistlib.readPlist(os.path.join(os.path.dirname(sys.executable), 'Info.plist'))
+    with open(os.path.join(os.path.dirname(sys.executable), 'Info.plist'), 'rb') as fp:
+        _properties = plistlib.loads(fp.read())
     PYTHONISTA_VERSION = _properties['CFBundleShortVersionString']
     PYTHONISTA_VERSION_LONG = _properties['CFBundleVersion']
 
diff --git a/system/shui/pythonista_ui.py b/system/shui/pythonista_ui.py
index 05e5c64e..06b118c6 100644
--- a/system/shui/pythonista_ui.py
+++ b/system/shui/pythonista_ui.py
@@ -894,7 +894,7 @@ def render(self, no_wait=False):
                 self.render_thread.cancel()
             self._render()
         else:  # delayed rendering
-            if self.render_thread is None or not self.render_thread.isAlive():
+            if self.render_thread is None or not self.render_thread.is_alive():
                 self.render_thread = sh_delay(self._render, self.RENDER_INTERVAL)
             # Do nothing if there is already a delayed rendering thread waiting
 
diff --git a/tests/pip/test_pip.py b/tests/pip/test_pip.py
index fb8b723e..f6c90dd9 100644
--- a/tests/pip/test_pip.py
+++ b/tests/pip/test_pip.py
@@ -60,6 +60,7 @@ def test_help(self):
         self.assertIn("download", output)
         self.assertIn("list", output)
 
+    @unittest.skip('Pip is retiring and seach is disabled')
     @requires_network
     def test_search(self):
         """test 'pip search <term>'"""
@@ -105,8 +106,8 @@ def test_install_pypi_simple_2(self):
             self.logger.info("sys.path = " + str(sys.path))
             raise AssertionError("Could not import installed module: " + repr(e))
 
+    # @expected_failure_on_py3
     @requires_network
-    @expected_failure_on_py3
     def test_install_pypi_complex_1(self):
         """test 'pip install <pypi_package>' with a complex package."""
         output = self.run_command("pip --verbose install twisted", exitcode=0)
@@ -119,6 +120,7 @@ def test_install_pypi_complex_1(self):
             self.logger.info("sys.path = " + str(sys.path))
             raise AssertionError("Could not import installed module: " + repr(e))
 
+    ''' setup.py on modern pip
     @requires_network
     def test_install_pypi_nobinary(self):
         """test 'pip install --no-binary :all: <pypi_package>'."""
@@ -131,11 +133,12 @@ def test_install_pypi_nobinary(self):
         except ImportError as e:
             self.logger.info("sys.path = " + str(sys.path))
             raise AssertionError("Could not import installed module: " + repr(e))
+    '''
 
     @requires_network
     def test_install_pypi_onlybinary(self):
         """test 'pip install --only-binary :all: <pypi_package>'."""
-        output = self.run_command("pip --verbose install --only-binary :all: rsa", exitcode=0)
+        output = self.run_command("pip --verbose install --only-binary :all: rsa==4.5", exitcode=0)
         self.assertIn("Downloading package", output)
         self.assert_did_run_setup(output, allow_source=False)
         self.assertIn("Package installed: rsa", output)
@@ -152,7 +155,7 @@ def test_install_command(self):
         self.run_command("pyrsa-keygen --help", exitcode=127)
 
         # 2. install
-        output = self.run_command("pip --verbose install rsa", exitcode=0)
+        output = self.run_command("pip --verbose install rsa==4.5", exitcode=0)
         self.assertIn("Downloading package", output)
         self.assert_did_run_setup(output)
         self.assertIn("Package installed: rsa", output)
@@ -287,20 +290,20 @@ def test_uninstall(self):
             # expected failure
             pass
     
-    def test_blacklist_fatal(self):
-        """test 'pip install <blacklisted-fatal-package>'."""
+    def test_blocklist_fatal(self):
+        """test 'pip install <blocklisted-fatal-package>'."""
         output = self.run_command("pip --verbose install pip", exitcode=1)
         self.assertIn("StaSh uses a custom version of PIP", output)
-        self.assertIn("PackageBlacklisted", output)
+        self.assertIn("PackageBlocklisted", output)
         self.assertNotIn("Package installed: pip", output)
     
-    def test_blacklist_nonfatal(self):
-        """test 'pip install <blacklisted-nonfatal-package>'."""
+    def test_blocklist_nonfatal(self):
+        """test 'pip install <blocklisted-nonfatal-package>'."""
         output = self.run_command("pip --verbose install matplotlib", exitcode=0)
-        self.assertIn("Warning: package 'matplotlib' is blacklisted, but marked as non-fatal.", output)
+        self.assertIn("Warning: package 'matplotlib' is blocklisted, but marked as non-fatal.", output)
         self.assertIn("This package is already bundled with Pythonista", output)
-        self.assertNotIn("PackageBlacklisted", output)
+        self.assertNotIn("PackageBlocklisted", output)
         self.assertNotIn("Package installed: matplotlib", output)
     
-    # TODO: add test for blacklist with alternative.
+    # TODO: add test for blocklist with alternative.
     
diff --git a/tools/pythonista_reinstall.py b/tools/pythonista_reinstall.py
index fee4c94e..dc2fef86 100644
--- a/tools/pythonista_reinstall.py
+++ b/tools/pythonista_reinstall.py
@@ -19,7 +19,7 @@ def remove_stash():
 
 
 def install_stash(repo="ywangd", branch="master"):
-    if not "TMPDIR" in os.environ:
+    if "TMPDIR" not in os.environ:
         os.environ["TMPDIR"] = tempfile.gettempdir()
     ns = {"_owner": repo, "_br": branch}
     exec(requests.get("https://bit.ly/get-stash").content, ns, ns)