Search for a ROOT that has both Phoebe's patch and RooHammerFit working

[yipengsun]

We'd like to use the latest ROOT, if possible. If not, we can fall back to ROOT 6.16/00. We need to verify:

• [x] Phoebe's HistFactory patch works
• [ ] HAMMER works
• [ ] RD+'s RooHammerFit works

[yipengsun]

@manuelfs I've moved HAMMER to this repo. @manuelfs could you pull the latest changes of this repo (root-curated) and try building HAMMER with:

nix build ".#hammer-phys"

[manuelfs]

Am I in the wrong branch or something?

(base) |20:43:44|~/code/root-curated$ git pull
remote: Enumerating objects: 9, done.
remote: Counting objects: 100% (9/9), done.
remote: Compressing objects: 100% (1/1), done.
remote: Total 5 (delta 4), reused 5 (delta 4), pack-reused 0
Unpacking objects: 100% (5/5), done.
From github.com:umd-lhcb/root-curated
   25f8937..929af79  master     -> origin/master
Your configuration specifies to merge with the ref 'refs/heads/test_root_6_16'
from the remote, but no such ref was fetched.

(base) |20:43:51|~/code/root-curated$ git status
On branch test_root_6_16
Your branch is up to date with 'origin/test_root_6_16'.

Untracked files:
  (use "git add <file>..." to include in what will be committed)
    result

nothing added to commit but untracked files present (use "git add" to track)

(base) |20:44:06|~/code/root-curated$ nix build ".#hammer-phys"
error: attribute 'root_6_12_06' missing

       at /nix/store/nwaaqriz5pd8cm9xi10wax9zdnjm8z8s-source/flake.nix:25:26:

           24|           root_6_16_00 = pkgs.root_6_16_00;
           25|           root_6_12_06 = pkgs.root_6_12_06;
             |                          ^
           26|           root_5_34_38 = pkgs.root_5_34_38;
(use '--show-trace' to show detailed location information)

[yipengsun]

I think your local root-curated has deviated from the official master:

Your configuration specifies to merge with the ref 'refs/heads/test_root_6_16'
from the remote, but no such ref was fetched.

(base) |20:43:51|~/code/root-curated$ git status
On branch test_root_6_16
Your branch is up to date with 'origin/test_root_6_16'.

You are still on test_root_6_16 branch instead of master. Checkout master branch and pull explicitly with git pull origin master then try again.

[manuelfs]

In master I can run nix build ".#hammer-phys" without errors.

[yipengsun]

ROOT 6.24/04 is out, and nixpkgs's upstream package will be updated to that version soon (pull request).

Should we update now? My initial take is that given we are still working on making fitter work, we defer this until we reach a conclusion on the fitter study. On the other hand, 6.24/04 is a bugfix release so it might be desirable to work with a version of ROOT that has fewer known bugs?