[shayaknyc]

I added the print statement to the __init__.py file and despite the environment variable, running the calibredb command, as per the documentation in the link, did not display the print message.

Edit: for clarity, I edited ../calibre/src/calibre/__init__.py and added print("Hello, world!") to line 16 of that file, after all the import statements, and before the first if condition.

Then, I set the environment variable CALIBRE_DEVELOP_FROM to the full path /home/shayaknyc/git/calibre/src and executing echo $CALIBRE_DEVELOP_FROM displays the proper full path to the src directory. I then execute command calibredb and this is the output:

calibredb
Failed to initialize plugin: '/home/shayaknyc/.config/calibre/plugins/ANOBII.zip'
Failed to initialize plugin: '/home/shayaknyc/.config/calibre/plugins/Barnes & Noble.zip'
Failed to initialize plugin: '/home/shayaknyc/.config/calibre/plugins/DOC Input.zip'
Failed to initialize plugin: '/home/shayaknyc/.config/calibre/plugins/KoboBooks.zip'
Failed to initialize plugin: '/home/shayaknyc/.config/calibre/plugins/Read MP3 AudioBook metadata.zip'
Usage: calibredb command [options] [arguments]

calibredb is the command line interface to the calibre books database.

command is one of:
  list
  add
  remove
  add_format
  remove_format
  show_metadata
  set_metadata
  export
  catalog
  saved_searches
  add_custom_column
  custom_columns
  remove_custom_column
  set_custom
  restore_database
  check_library
  list_categories
  backup_metadata
  clone
  embed_metadata
  search
  fts_index
  fts_search

For help on an individual command: calibredb command --help


Whenever you pass arguments to calibredb that have spaces in them, enclose the arguments in quotation marks. For example: "/some path/with spaces"

Options:
  GLOBAL OPTIONS:
    --library-path=LIBRARY_PATH, --with-library=LIBRARY_PATH
                        Path to the calibre library. Default is to use the
                        path stored in the settings. You can also connect to a
                        calibre Content server to perform actions on remote
                        libraries. To do so use a URL of the form:
                        http://hostname:port/#library_id for example,
                        http://localhost:8080/#mylibrary. library_id is the
                        library id of the library you want to connect to on
                        the Content server. You can use the special library_id
                        value of - to get a list of library ids available on
                        the server. For details on how to setup access via a
                        Content server, see https://manual.calibre-
                        ebook.com/generated/en/calibredb.html.

    -h, --help          show this help message and exit

    --version           show program's version number and exit

    --username=USERNAME
                        Username for connecting to a calibre Content server

    --password=PASSWORD
                        Password for connecting to a calibre Content server.
                        To read the password from standard input, use the
                        special value: <stdin>. To read the password from a
                        file, use: <f:/path/to/file> (i.e. <f: followed by the
                        full path to the file and a trailing >). The angle
                        brackets in the above are required, remember to escape
                        them or use quotes for your shell.

    --timeout=TIMEOUT   The timeout, in seconds, when connecting to a calibre
                        library over the network. The default is two minutes.


Created by Kovid Goyal <kovid@kovidgoyal.net>