[fix] Try to find data directory beside lib directory first

codechecker_common/cli.py

@@ -57,14 +57,25 @@ def get_data_files_dir_path():
     # If it's not an internal package (pypi package), try to find the data
     # directory.
     import sysconfig
-    data_dir_paths = set(sysconfig.get_path("data", s)
-                         for s in sysconfig.get_scheme_names())
+    data_dir_paths = [
+        # Try to find the data directory beside the lib directory.
+        # E.g.: /usr/local/lib/python3.8/dist-packages/codechecker_common/*.py
+        os.path.abspath(os.path.join(__file__, *[os.path.pardir] * 5)),
+
+        # Automatically try to find data directory if it can be found on other
+        # places.
+        *set(sysconfig.get_path("data", s)
+             for s in sysconfig.get_scheme_names())]
 
     for dir_path in data_dir_paths:
         data_dir_path = os.path.join(dir_path, 'share', 'codechecker')
         if os.path.exists(data_dir_path):
             return data_dir_path
 
+    print("Failed to get CodeChecker data files directory path in: ",
+          data_dir_paths)
+    sys.exit(1)
+
 
 def main():
     """

docs/README.md

@@ -205,19 +205,19 @@ Useful tools that can also be used outside CodeChecker.
 
 # Install guide
 
-## Install CodeChecker via pip
+## Install CodeChecker via `pip`
 CodeChecker is available on the [pypi](https://pypi.org/project/codechecker/)
-and can be install with the following command:
+and can be installed with the following command:
 ```sh
 pip3 install codechecker
 ```
 
 **Note:** this package can be installed on `Linux`, `OSX` and `Windows`
-systems where `pip3` command is available. On `OSX` `intercept-build` must be
-installed for logging (`CodeChecker log`). On `Windows` system the logging
-feature is not available.
+systems where `pip3` command is available. On `OSX`, `intercept-build` must be
+installed for logging (`CodeChecker log`). On `Windows`, logging is not
+available.
 
-## Installing CodeChecker via Snap package manager
+## Installing CodeChecker via `Snap package manager`
 CodeChecker is available on the [Snap Store](https://snapcraft.io/codechecker)
 and can be installed with the following command:
 ```sh