v0.7.4 Pre-release thread

[adhami3310]

Please report any problems you encounter in this discussion thread or as separate issues on reflex-dev/reflex.

pip install 'reflex~=0.7.4a'

Schedule

2025-03-20 11:50 PST: 0.7.4a1 pre-release published for testing
2025-03-21 22:10 PST: 0.7.4a2 pre-release published for testing
2025-03-24 13:50 PST: 0.7.4a3 pre-release published for testing
2025-03-24: Planned Public release of 0.7.4

Changes in 0.7.4a3

• fix: prevent AttributeError when using bare mixins by @benedikt-bartscher in fix: prevent AttributeError when using bare mixins #5011
• disable ipv6 by @adhami3310 in disable ipv6 #5013
• clean pycache after downloading template, fixes ModuleNotFoundError: No Module Named 'ai_image_gen' #4135 by @adhami3310 in clean pycache after downloading template, fixes #4135 #5014
• prevent repeat compiles on frontend only apps by @adhami3310 in prevent repeat compiles on frontend only apps #5017

Changes in 0.7.4a2

• preserve the error message if it was reflex who threw it by @adhami3310 in preserve the error message if it was reflex who threw it #5004
• fix str splatting in fallback command by @adhami3310 in fix str splatting in fallback command #5005
• do not fallback to key name and print tracebacks properly in compile by @adhami3310 in do not fallback to key name and print tracebacks properly in compile #5003
• fix dynamic components removing all imports form the library by @adhami3310 in fix dynamic components removing all imports form the library #5008
• move granian to the sidelines by @adhami3310 in move granian to the sidelines #5010
• fix next themes no rerender by @adhami3310 in fix next themes no rerender #5001

Release Notes

SASS and SCSS

Thanks to @KronosDev-Pro, reflex can now compile your SASS and SCSS files for you! Simply reference a local SASS/SCSS file in the stylesheets key-word argument for rx.App. You need to have libsass installed.

• [IMPL] - added support for sass and scss stylesheet languages by @KronosDev-Pro in [IMPL] - added support for sass and scss stylesheet languages #4292
• add libsass to the dev deps by @adhami3310 in add libsass to the dev deps #4982

Bun

We used to be using bun as a default for installation, and now we're using it as a runtime as well. In most cases it should work fine, but if it doesn't, you should install node in your global system.

This also removes fnm/npm automatic download from reflex and will cut down on the time for new system installs.

• double down on bun over fnm/npm by @adhami3310 in double down on bun over fnm/npm #4906

Granian

Edit

We reversed our decision to move Granian now. We are working with Granian developers to add some bugfixes and features to make sure the change is as smooth as it could be. We do believe it's good enough for prod builds though. You can help us experiment by setting the REFLEX_USE_GRANIAN environment flag on.

We're also moving off of uvicorn/gunicorn to emmett-framework/granian. This lets us simplify our stack and improve runtime performance substantially. With this, we're also deprecating timeout and other gunicorn specific config fields. You can customize granian arguments by passing environment variables, for that, check the granian readme.

If you have uvicorn/gunicorn installed, Reflex will use them. Otherwise, Granian will be used. Note that will change in 0.8.0 to only use Granian.

But! you don't have to use Granian, or even reflex run. With the new change, you can also run reflex from any asgi compliant program, for example:

uvicorn your_app_name.your_app_name:app --factory

• Remove app_module_for_backend by @masenf in Remove app_module_for_backend #4749
• granian all the way by @adhami3310 in granian all the way #4994

Specify multiple env files

You can pass multiple files (separated by : on linux, ; on windows) for the ENV_FILE environment variable.

• Allow multiple env_file to be specified, split on os pathsep by @masenf in Allow multiple env_file to be specified, split on os pathsep #4993

NextJS downgrade :(

Due to issues we're having with turbopack, we're temporarily downgrading to an earlier version of nextJS 15 until the issues get fixed.

• [ENG-5099] 0.7.4 version bumps (and nextjs downgrade) by @masenf in [ENG-5099] 0.7.4 version bumps (and nextjs downgrade) #4986

Components

• allow cond to mix components and props by @adhami3310 in allow cond to mix components and props #4980
• improve logic for icon name handling by @adhami3310 in improve logic for icon name handling #4988

Bugfixes

• downgrade annoying log messages by @masenf in downgrade annoying log messages #4977
• Fix get_parent_state and get_root_state when using mixin=True by @masenf in Fix get_parent_state and get_root_state when using mixin=True #4976
• handle range value types [ENG-5143] by @adhami3310 in handle range value types [ENG-5143] #4990

Chores

• bump to 0.7.4dev by @adhami3310 in bump to 0.7.4dev #4978
• add missing pip to uv install in benchmarking action by @adhami3310 in add missing pip to uv install in benchmarking action #4979
• make prettier not hog the system by @adhami3310 in make prettier not hog the system #4981
• Download Count by @Alek99 in Download Count #4996
• unbreak precommit :( by @adhami3310 in unbreak precommit :( #4997

New Contributors

• @KronosDev-Pro made their first contribution in [IMPL] - added support for sass and scss stylesheet languages #4292

Full Changelog: v0.7.3...v0.7.4

[adhami3310]

color_mode_cond had a regression, fix will be in 0.7.4a2 #5001

[adhami3310]

0.7.4 released