DevNotes_10Feb2026

General updates (roundtable)

• Generic Scattering Calculator redesign working group: Feb 12th
• Refactoring project quarterly hackathons — update (Jeff)
  • RefactorHackathon‐2026‐1
  • Project status meeting held on February 6 - Jeff to give overview
  • March 13 final planning - March 16 and 17 for work
• Strategy for adding new models to core and marketplace (Wojtek)
  • Paul B and Wojtek to discuss starting a working group and making a call
    • nothing new - focusing on GSC work first
• Neutron GRC (Barcelona, April) — registration deadline Mar 29, update (Yun)
  • March 29 deadline for application (= required for registration)
  • Posters are limited to 74
    • actually the limit it turns out to be much larger
    • Over 145 applications so far and is looking to be an exciting conference
    • Still would like to sort out a person to present a SasView poseter
• Tracking the impact of SasView
  • Metrics: Users, downloads, publications, citations
  • Download statistics: https://tooomm.github.io/github-release-stats/?username=sasview&repository=sasview
  • Publications: https://www.sasview.org/publications/. Need to update list on Zenodo and fix the bit rot in https://github.com/SasView/saspubs
    • Also note that fixing the code will not do much unless we also update the Zenodo database with actual publications
  • Usage analytics: Revisit https://github.com/SasView/sasview/pull/2702?
• ACNS tutorial proposals open...

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Next contributor camp

• Venue scouting: Prague / Paris (SOLEIL or LPS Orsay) / ILL - Paul to give update
  • https://github.com/SasView/sasview/wiki/CodeCampPlanning
  • Soleil not possible for 2026 due to availability of conference services. 2027 or 2028? Start planning now!
  • Dominika is very interested to host in Prague - Paul B. in contact.
  • ILL - Paul G. working on it.
• Next step: once potential hosts identified, send a location poll
  • Maybe take all for different years? How to chose which is which? does one offer prefer 2027 or 2026?

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Releases

• 6.1.3:

  • 6.1.3a1 pre-release exists (Dec 18, 2025); nightly builds ongoing
  • What’s left for 6.1.3 final:
    • Pull requests: https://github.com/SasView/sasview/pulls?q=is%3Apr+is%3Aopen+label%3A%22SasView+6.1.3%22
    • Issues: https://github.com/SasView/sasview/issues?q=is%3Aissue%20state%3Aopen%20label%3A%22SasView%206.1.3%22
  • Target release date:
    • RC: Feb. 17
    • Final release: Feb. 23
  • Sasmodels 1.0.13 release with latest changes?
    • Correct typo in docs variable description - #692
    • Remove polydispersity from Sq models - #691
    • Adding truncated octahedron model (python and c) - #687
    • Fix RepeatedKernelRetrieval error in OpenCL - #677
    • Adjust limits for Guinier-Porod model - #667
  • Discussion: Should we separate the releases of each package and make them independent of each other?
  • Recommendation from meeting is no sasmodels release this go and instead do it for 6.2 release

• 6.2.0:

  • Proposed release date: July 2026(?)
  • Release manager wanted! (Paul S., Wojtek P., or Piotr W.?)

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ADRs

• Sent to mailing list for final review:
  • Revision: Creating ADRs - https://github.com/orgs/SasView/discussions/3583
  • Citing SasView and Parallel Projects - https://github.com/orgs/SasView/discussions/3503#discussioncomment-15478775
  • Type hints - https://github.com/orgs/SasView/discussions/3170#discussioncomment-15270540
  • Ruff and Linting - https://github.com/orgs/SasView/discussions/3171#discussioncomment-15497631
• Discuss:
  • Use the browser instead of built-in window - https://github.com/orgs/SasView/discussions/3511 (related PR: #3847 — Remove QtWebEngine; use system browser)
    • Question was raised as to whether this should just be a usual PR change or an actual ADR. Most seemed to believe an ADR was appropriate but agreed some more discussion should be allowed.

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Pull requests

SasView/sasview (18 open PRs)

https://github.com/SasView/sasview/pulls

Merge candidates (approved review: 3)

• #3857 — Constrained fitting model reordering
• #3846 — 2D params stuck at 0.0 (due to invalid truthiness check)
• #3843 — Allow PD and magnetic params in batch fitting

Changes requested (4)

• #3790 — Slider option for parameters
• #3842 — Add Pixi config file + setup automated versioning
• #2782 — Interpolation for operations (Draft; long-running)
• #2315 — Auto-plot data sent to fitting (Draft; long-running)

Needs review (11)

• #3863 — Use GuiUtils.communicate wherever possible
• #3862 — Standardize colors
• #3861 — Invariant Perspective Code Cleanup
• #3847 — Remove QtWebEngine; use system browser
• #3832 — Angularly replicated “symmetric” slicers
• #3786 — Support for SAXS fitting (v2)
• #3761 — Keep tabbed plotter inside main window (Draft)
• #3456 — Test PDF viewing (Draft)
• #3111 — Plotting refactor integration (Draft)
• #3006 — Refactoring Branch (Draft)
• #2940 — Plotting refactor (Draft)

SasView/sasmodels (14 open PRs)

https://github.com/SasView/sasmodels/pulls

Merge candidates (approved review: 1)

• #533 — Fixed switched nomenclature for length and width

Needs review (13)

• #694 — Pure python truncated octahedron (Adds numba as a dependency)
• #689 — Model for a mixture of two homopolymers (RPA case 0) (Draft; approved)
• #676 — Update examples and plotters for bumps webview
• #673 — Fix limits on angles and angular dispersity
• #671 — Update orientation viewer
• #665 — Send data mask from theory calculator into plotter
• #658 — Simple adaptive integration
• #651 — Allow sasmodels.compare to use bumps webview (no wx)
• #608 — Better integration
• #570 — Pure python Fq for beta approximation
• #536 — Oriented SESANS transform (Draft; changes requested)
• #507 — Paracrystalline model simulation
• #449 — WIP: spelling fixes in two_power_law (Draft; changes requested)

SasView/sasdata (8 open PRs)

https://github.com/SasView/sasdata/pulls

Changes Required (failing unit tests: 1)

• #47 — Finishing the manipulations.py rewrite

Needs review (5)

• #186 — Adds trig and exp operations (opened Feb 2, 2026)
• #185 — Perf: optimize string concatenation using .join() (opened Jan 24, 2026)
• #101 — 48 fractional binning (Draft)
• #79 — Refactoring Branch (Draft)
• #62 — Interpolations for data operations (Draft)

No reviews / not yet in review-required bucket (2)

• #156 — Work on the SasData object definition (Draft)
• #106 — Sasview database (Draft)

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Help desk staffing

https://github.com/SasView/sasview/wiki/DevNotes_HelpDesk

• Covered through May (need summer coverage)

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AOB