How will Calibre handle Calibre 5 only plugins?

JSWolf · 01-11-2021, 05:35 PM

What happens if a plugin that was written before Calibre 5 ends up no longer working on Calibre 4.23 because of no longer being Python 2 compatible? How will Calibre handle it?

As I see it now, Calibre 4.23 or earlier will pull up a notification that there is a new version, the new version will be installed and screw with the existing version.

Will Calibre be modified such that it will handle this issue and not show plugins that only work on Calibre 5 to Calibre 423 or earlier versions?

DNSB · 01-11-2021, 05:38 PM

Quote:

Originally Posted by JSWolf

What happens if a plugin that was written before Calibre 5 ends up no longer working on Calibre 4.23 because of no longer being Python 2 compatible? How will Calibre handle it?

As I see it now, Calibre 4.23 or earlier will pull up a notification that there is a new version, the new version will be installed and screw with the existing version.

Will Calibre be modified such that it will handle this issue and not show plugins that only work on Calibre 5 to Calibre 423 or earlier versions?

I would suspect that the plugin would list calibre 5+ as a prerequisite. One example would be:

Code:

    minimum_calibre_version = (5, 0, 0)  # Python 3.

So the calibre5+ version of the plugin would not install.

thiago.eec · 01-11-2021, 05:44 PM

Quote:

Originally Posted by JSWolf

As I see it now, Calibre 4.23 or earlier will pull up a notification that there is a new version, the new version will be installed and screw with the existing version.

That's not true. There is a minimum calibre version variable. If the user version is lower than that, then he/she will not be notified about the update. Also, the user can't install it, even if he/she wants it, not even manually.

JSWolf · 01-15-2021, 11:23 AM

Quote:

Originally Posted by thiago.eec

That's not true. There is a minimum calibre version variable. If the user version is lower than that, then he/she will not be notified about the update. Also, the user can't install it, even if he/she wants it, not even manually.

I just double checked, the list of plugins will show but if the version of Calibre in use is not up-to-date enough, the plugins will show with an exclamation point on the filename. So there is no way to install a Calibre 5 plugi with Calibre 4 or earlier.

Terisa de morgan · 01-15-2021, 01:26 PM

Quote:

Originally Posted by JSWolf

I just double checked, the list of plugins will show but if the version of Calibre in use is not up-to-date enough, the plugins will show with an exclamation point on the filename. So there is no way to install a Calibre 5 plugi with Calibre 4 or earlier.

I can tell you for sure, as I had to modify the Actions Chain plugins to install it in my calibre 4 version (before updating).

JSWolf · 01-15-2021, 06:44 PM

I do think it would be a good idea for plugins that had version(s) that worked with Calibre 4 to have a thread of their own so those not able to run Calibre 5 can still get some version of these plugins.

ownedbycats · 01-15-2021, 07:02 PM

There's a stickied thread for older versions of plugins.

davidfor · 01-15-2021, 10:01 PM

Quote:

Originally Posted by JSWolf

I do think it would be a good idea for plugins that had version(s) that worked with Calibre 4 to have a thread of their own so those not able to run Calibre 5 can still get some version of these plugins.

As a person who maintains plugins I strongly disagree.

01-11-2021, 05:35 PM	#1
JSWolf Resident Curmudgeon Posts: 73,941 Karma: 128903250 Join Date: Nov 2006 Location: Roslindale, Massachusetts Device: Kobo Libra 2, Kobo Aura H2O, PRS-650, PRS-T1, nook STR, PW3	How will Calibre handle Calibre 5 only plugins? What happens if a plugin that was written before Calibre 5 ends up no longer working on Calibre 4.23 because of no longer being Python 2 compatible? How will Calibre handle it? As I see it now, Calibre 4.23 or earlier will pull up a notification that there is a new version, the new version will be installed and screw with the existing version. Will Calibre be modified such that it will handle this issue and not show plugins that only work on Calibre 5 to Calibre 423 or earlier versions?

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01-15-2021, 06:44 PM	#6
JSWolf Resident Curmudgeon Posts: 73,941 Karma: 128903250 Join Date: Nov 2006 Location: Roslindale, Massachusetts Device: Kobo Libra 2, Kobo Aura H2O, PRS-650, PRS-T1, nook STR, PW3	I do think it would be a good idea for plugins that had version(s) that worked with Calibre 4 to have a thread of their own so those not able to run Calibre 5 can still get some version of these plugins.

01-15-2021, 07:02 PM	#7
ownedbycats Custom User Title Posts: 8,598 Karma: 61176603 Join Date: Oct 2018 Location: Canada Device: Kobo Libra H2O, formerly Aura HD	There's a stickied thread for older versions of plugins.