---
# System prepended metadata

title: DIALS core meeting 2023-04-20
tags: [core meeting]

---

---
name: DIALS core meeting 2023-04-20
tags: core meeting
---

# DIALS core meeting 2023-04-20

## Previous Actions

- [ ] **ND**: PR to remove `std::string` support for messagepack from dials code
- [ ] **ND** Investigate getting `psana` tests running on the DIALS xfel-regression testing
- [ ] Dropping Data Blocks ([#504](https://github.com/cctbx/dxtbx/pull/504))
    - [ ] **ND**: Look at DIALS failures and work out what needs to be migrated
- [ ] **RG**: Investigate `dials.cosym` applies an incompatible reindexing operator ([`dials/2320`](https://github.com/dials/dials/issues/2320)) ([prev](https://dials.github.io/kb/core/2023-03-09#dialscosym-applies-an-incompatible-reindexing-operator))
- [x] **DM**: Moving flex tables; Solve [`dials#2113`](https://github.com/dials/dials/pull/2113) deprecation issue and merge conflicts


## Agenda

### Moving flex tables from dials to dxtbx

https://github.com/dials/dials/pull/2113

- [Previously](https://dials.github.io/kb/core/2023-04-06#moving-flex-tables-from-dials-to-dxtbx)
- Merge conflicts appear to have been resolved?
- ND planned to merge next week after the DIALS release
- couple of test failures regarding slicing
- Merge when fixed!

### NX Writer! ([prev](https://dials.github.io/kb/core/2023-03-09#aob))

- Did some scan-related work last time
- What is state?
- Few test failures relating to dependencies on dials, xfel
- These will be worked on!
- ND to merge https://github.com/cctbx/dxtbx/pull/612
    - Missed merge window, any outstanding issues?
    - Aaron to make basic test case

# Removing cctbx.xfel dependencies from dials.index

- Discovered when running conda-forge testing
- https://github.com/dials/dials/pull/2390
- https://github.com/cctbx/cctbx_project/compare/serial_tbx !


### Code camp idea?

- Aaron suggests - a few days, couple of hours a day, work on outstanding smaller issues?
- Virtual DIALS code-camp
- Split into sessions:
    - Planning
    - Coding
    - Closeout
- Graeme suggests linking to potential serial workshop being talked about at Cornell/CHESS for ~end of July
    - Week of 17th July, confirmed
- \o/




### AOB?

### Polychromatic Beam
- https://github.com/cctbx/dxtbx/pull/621

### Scans
- https://github.com/cctbx/dxtbx/pull/620








### Next meeting

Thursday, May 4th, 4pm (BST), 8am (PDT)
