Trac 1.4: environment_needs_upgrade() takes exactly 2 arguments (1 given)

[strk@…]

Once the TracTicketReferencePlugin is activated Trac 1.4.4 stops working and only renders an error instead:

TracError: Unable to check for upgrade of ticketref.api.TicketRefsPlugin:
TypeError: environment_needs_upgrade() takes exactly 2 arguments (1 given)

We're trying to get cross-ticket references so if anyone has other suggestions they are welcome: ​https://trac.osgeo.org/osgeo/ticket/2105

[strk@…]

It is the TicketRefsPlugin component, in particular, that triggers the error. TicketRefsTemplate can be enabled successfully

[Jun Omae]

Please try the latest version. The issue has been fixed in [18442] (#14042).

[Jun Omae]

Hm, please try to checkout the latest version from the repository, https://trac-hacks.org/svn/tracticketreferenceplugin/1.0, instead of ​pypi:TracTicketReferencePlugin. I have no permission to push packages to the ​pypi:TracTicketReferencePlugin.

[anonymous]

We upgraded to 1.6, can't test 1.4 anymore. Assuming it would have worked.

[anonymous]

Any chance to get #14271 applied ?

[Jun Omae]

Any chance to get #14271 applied ?

I don't know. Please comment to #14271, not here.

[Jun Omae]

Replying to Jun Omae:

Hm, please try to checkout the latest version from the repository, https://trac-hacks.org/svn/tracticketreferenceplugin/1.0, instead of ​pypi:TracTicketReferencePlugin. I have no permission to push packages to the ​pypi:TracTicketReferencePlugin.

I uploaded source and wheel packages of the latest version to ​pypi:TracTicketReferencePlugin. It is able to install via pypi instead of checking out the repository, now.