The problem is the part of my code base depends on third party library (aiopg) which should be compatible with SQLAlchemy 1.4 too but there some problems with it ( https://github.com/aio-libs/aiopg/issues/798#issuecomment-879815102 ) which make migration from 1.3 to 1.4 impossible for now =/
On Thursday, June 10, 2021 at 3:57:08 PM UTC+3 Mike Bayer wrote: > > > On Wed, Jun 9, 2021, at 7:21 PM, Marat Sharafutdinov wrote: > > The problem is that currently only the entire codebase can be migrated > from 1.3 to 1.4, even though it can be extremely difficult or too long to > do. > > I suggest the following way of pinning dependencies: > sqlalchemy==1.3 > sqlalchemy2==1.4 or sqlalchemy2==2.0 > > Then current codebase will continue to work because "sqlalchemy" package > stays at version 1.3 but it will be possible to use SQLAlchemy 1.4 / 2.0 > additionally to migrate not whole codebase but part by part by importing > "sqlalchemy2" package. > > > the entire migration process was designed around not having to do it like > this, and I spent months thinking about it. It would not be feasible for > two versions of sqlalchemy to exist at the same time because then the > entire import space would have to become "sqlalchemy2" and this is too > drastic of a change which would heavily impede migration. > > I think your assessment that "only the entire codebase can be migrated > from 1.3 to 1.4" is not true, most applications that run on 1.3 will run on > 1.4 with little to no changes and hundreds of users have already done so. > The 1.3-> 1.4 change is roughly comparable to the change that it has been > for other releases, like 1.0->1.1, 1.1->1.2 etc. > > > > On Thursday, June 10, 2021 at 2:10:48 AM UTC+3 Mike Bayer wrote: > > > hi there - > > having a separate project name on pypi doesn't solve any issue that isn't > already solved by using version pinning - the "sqlalchemy" name on pypi is > already at 1.4. the only way to install 1.3 is by requesting "pip install > sqlalchemy < 1.4". > > As you've probably seen, SQLAlchemy 1.4 /2.0 includes a very specific > upgrade path with step-by-step instructions at > https://docs.sqlalchemy.org/en/14/changelog/migration_20.html . > > > > On Wed, Jun 9, 2021, at 4:15 PM, Marat Sharafutdinov wrote: > > Currently I'm on SQLAlchemy 1.3 and there is a lot of work I have to do to > migrate to 1.4 / 2.0. I think it's good idea to distribute 1.4 / 2.0 > versions not only as "SQLAlchemy" project but as additional separate > "SQLAlchemy2" project too with initial 1.4 version and then 2.0. This will > give opportunity to have 1.3 and earlier version of SQLAlchemy which is > already in use and latest SQLAlchemy2 version to migrate gradually step by > step, in case of Flask for example, - one API method by another. Just one > additional way to migrate painlessly. > > > -- > SQLAlchemy - > The Python SQL Toolkit and Object Relational Mapper > > http://www.sqlalchemy.org/ > > To post example code, please provide an MCVE: Minimal, Complete, and > Verifiable Example. See http://stackoverflow.com/help/mcve for a full > description. > --- > You received this message because you are subscribed to the Google Groups > "sqlalchemy" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to sqlalchemy+...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/sqlalchemy/730e4079-1751-4a9f-8f4a-f5fd7dde30f7n%40googlegroups.com > > <https://groups.google.com/d/msgid/sqlalchemy/730e4079-1751-4a9f-8f4a-f5fd7dde30f7n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > > > > -- > SQLAlchemy - > The Python SQL Toolkit and Object Relational Mapper > > http://www.sqlalchemy.org/ > > To post example code, please provide an MCVE: Minimal, Complete, and > Verifiable Example. See http://stackoverflow.com/help/mcve for a full > description. > --- > You received this message because you are subscribed to the Google Groups > "sqlalchemy" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to sqlalchemy+...@googlegroups.com. > > To view this discussion on the web visit > https://groups.google.com/d/msgid/sqlalchemy/fa4b7c8f-ab62-466f-94f5-572ff6397328n%40googlegroups.com > > <https://groups.google.com/d/msgid/sqlalchemy/fa4b7c8f-ab62-466f-94f5-572ff6397328n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > > > -- SQLAlchemy - The Python SQL Toolkit and Object Relational Mapper http://www.sqlalchemy.org/ To post example code, please provide an MCVE: Minimal, Complete, and Verifiable Example. See http://stackoverflow.com/help/mcve for a full description. --- You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To unsubscribe from this group and stop receiving emails from it, send an email to sqlalchemy+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sqlalchemy/203f42c9-29e2-4aed-bdbd-25abd717b1f3n%40googlegroups.com.
