2025-09-29 TSC Meeting notes

Dev Days update

• Got two good contributions, one very bad one that we had to decline

• One more coming, so three total

2.5.0 built-in configs progress

• Finished, ready for review

• Thomas has made great progress, library PR is already updated, ready to review

• Really great work, managed to get all the things on the milestone implemented which is great.

2.5.0 library progress

• Config merging feature

  • Do not have requisite reviews, but as we’re labeling it preview and it’s only app helpers, TSC decided to merge anyway

  • Please test once implemented!

• Min version updates

  • review of updated minimum versions

  • Thanks to Remi and Cuneyt for this work

  • Discussed last week at the working group, should be ready to merge barring any review comments

  • Removed python 3.14 wheels based on feedback from CI working group

  • Tests around OIIO are more limited, because the docker images from the CI working group don’t include it anymore

  • We only test OIIO in dependency-latest MacOS build, as it’s installed via brew

  • Zach will look into solutions on the OIIO / CI Working group side eventually, not urgent

  • Can’t use PIP installs as they don’t distribute headers currently, but maybe we should think about it and discuss further

  • Doug - primarily more important that OCIO work in OpenImageIO anyway, so not urgent for now

• Empty category handling

  • Menu system uses categories to generate menus based on context

  • So user doesn’t get all color spaces in every drop down

  • i.e. if you’re working with textures, you get the texture category options

  • When end users edit configs, they end up copying color spaces and it won’t have a category included

  • So if a color space doesn’t have a category, PR includes this color space in all categories instead of none

  • Carol - I think I misunderstood the problem space here, my comments on the PR should be disregarded

  • Kevin - wants a “super strict” mode in configs to be able to make apps not show options that are incorrect, even if no options are then available in the menu

    • We will look into this in the future, to have a config setting to override the library setting

    • Zach - could also be an environment variable

    • Kevin - would support env var options overriding config settings, as that is currently the behavior of our other env vars

  • Doug - how the logic works exists in the code already, we should try to separate this smaller issue from a larger discussion around logic for a later time

  • Group - will proceed as is on this PR, and bring this back up post release for more work

• Documentation PR

  • What's New, configs, etc.

  • plus remove "experimental" for ACES 2

  • Coming soon from Doug

  • Carol will review when it’s up

• RB_2.5 PR

  • We don’t require 2 reviews on RB PRs, so fine on this one

• Thanks everyone for the push, probably our biggest release since OCIO 2.0!

Slack Update

• Slack / LF stuff still in progress

• We can either auto-invite users active in the last 30 days, or auto-invite the whole channel membership, no in-between

  • TSC prefers inviting everyone, only the folks that check their email and action it will be joining anyway

• Carol to check with John on channel history merge functionality, based on that info TSC will decide on timing to move forward with migrating over fully

• Want to update docs/website etc with new slack info