Building from source silently fails

[ownedbycats]

On Windows 10 Home, I run Calibre from source using this batch file:

@ECHO OFF
set CALIBRE_DEVELOP_FROM=D:\Documents\git\calibre\src
"c:\Program Files\calibre2\calibre-debug" -g

It was working up until I had to reboot a few hours ago. Now it just immediately closes the console window and I don't see any text before it does. I also monitor the temporary folder and nothing appears in there.

Here are things I've tried:

- Using Sourcetree to pull the latest code. There was one change about a libstemmer.
- Double-checking that Calibre was not silently running in the background.
- Switched to a test library in case it was something involving the recent composite column recursion fixes.
- Since I'm not sure how to run without plugins with source, temporarily moving my plugins folder outside of Calibre's appdata folder. (in fact, according to last-accessed dates, it doesn't even touch anything in appdata)
- Rebooting again.

Regular Calibre runs fine, but there's a bugfix I use that's currently in source.

Any suggestions?

[kovidgoyal]

Open the console window first and then run the bat file inside it, you will hopefully get an actual error message then.

[ownedbycats]

Here's the error:

calibre 5.22.1* [64bit]  embedded-python: True is64bit: True
Windows-10-10.0.19041 Windows ('64bit', 'WindowsPE')
('Windows', '10', '10.0.19041')
Python 3.8.5
Windows: ('10', '10.0.19041', '', 'Multiprocessor Free')
Interface language: None
Traceback (most recent call last):
  File "runpy.py", line 194, in _run_module_as_main
  File "runpy.py", line 87, in _run_code
  File "site.py", line 82, in <module>
  File "site.py", line 77, in main
  File "site.py", line 49, in run_entry_point
  File "D:\Documents\git\calibre\src\calibre\debug.py", line 264, in main
    calibre(['calibre'] + args[1:])
  File "D:\Documents\git\calibre\src\calibre\gui_launch.py", line 60, in calibre
    print_basic_debug_info()
  File "D:\Documents\git\calibre\src\calibre\debug.py", line 208, in print_basic_debug_info
    from calibre.customize.ui import has_external_plugins, initialized_plugins
  File "D:\Documents\git\calibre\src\calibre\customize\ui.py", line 18, in <module>
    from calibre.customize.builtins import plugins as builtin_plugins
  File "D:\Documents\git\calibre\src\calibre\customize\builtins.py", line 752, in <module>
    from calibre.devices.smart_device_app.driver import SMART_DEVICE_APP
  File "D:\Documents\git\calibre\src\calibre\devices\smart_device_app\driver.py", line 2051, in <module>
    from zeroconf import (
ImportError: cannot import name '_LOCAL_TRAILER' from 'zeroconf' (c:\Program Files\calibre2\app\bin\python-lib.bypy.frozen\zeroconf\__init__.pyc)

I ran a repair install in case it was a broken file and got the same error.

[ownedbycats]

According to https://github.com/kovidgoyal/calibr..._app/driver.py the file was updated 3 days ago with a comment about zeroconf. I will see if I can figure out how to selectively revert that in my copy.

[kovidgoyal]

Install the beta from: https://download.calibre-ebook.com/betas/
it has the updated zeroconf

[ownedbycats]

Now it's working. Thank you

[ownedbycats]

Also, the beta includes the composite recursion fix. So I can just use the beta for now.

[chinax]

Interesting, just got the same error after updating to 5.23 — I guess I have my answer, too, but I would think it was intended to have the updated zeroconf included. Right?

[kovidgoyal]

It does have the updated zeroconf included.