Update environment for rainforests calibration

CONTRIBUTING.md

@@ -46,6 +46,7 @@ below:
  - Andrew Creswick (Met Office, UK)
  - Neil Crosswaite (Met Office, UK)
  - Shafiat Dewan (Met Office, UK)
+ - Rachael Esler (Bureau of Meteorology, Australia)
  - Gavin Evans (Met Office, UK)
  - Zhiliang Fan (Bureau of Meteorology, Australia)
  - Ben Fitzpatrick (Met Office, UK)

doc/source/Dependencies.rst

@@ -161,9 +161,18 @@ Required for CLIs: ``apply-rainforests-calibration``
 
 Treelite
 ~~~~~~~~~~~~~~~~~~
-Model compiler for decision tree ensembles, used for more efficient computation
-of GBDT ensembles required for RainForests calibration.
+Lightweight binary format for specifying decision tree models, used for
+RainForests calibration.
 
 https://treelite.readthedocs.io/en/latest/index.html
 
 Required for CLIs: ``apply-rainforests-calibration``
+
+TL2cgen (TreeLite 2 C GENerator)
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+Model compiler for decision tree models, used for more efficient computation
+of GBDT models required for RainForests calibration.
+
+https://tl2cgen.readthedocs.io/en/latest/index.html
+
+Required for CLIs: ``apply-rainforests-calibration``

doc/source/extended_documentation/calibration/rainforests_calibration/rainforests_calibration.rst

@@ -58,7 +58,8 @@ variables are typically diagnostic variables for the ensemble realization (inclu
 but can include static and dynamic ancillary variables, such as local solar time, and whole-of-ensemble
 values for diagnostic variables, such as mean or standard deviation.
 
-Here we use LightGBM for training the models, and compile the models with Treelite for efficient prediction.
+Here we use LightGBM for training the models, and compile the models with TL2cgen
+(TreeLite 2 C GENerator) for efficient prediction.
 
 ================================
 GBDT vs manually constructed DT

envs/conda-forge.yml

@@ -16,6 +16,7 @@ dependencies:
   - numpy=2.2
   - scipy=1.15
   - sphinx
+  - pandas
   # Additional libraries to run tests, not included in improver-feedstock
   - bandit
   - filelock

envs/environment_b.yml

@@ -18,10 +18,11 @@ dependencies:
   - scipy=1.15
   - sphinx
   # Optional
-  - lightgbm
+  - lightgbm>=4.0.0
   - numba
   - python-stratify
-  - treelite
+  - treelite>=4.0.0
+  - tl2cgen>=1.0.0
   # Development
   - astroid
   - bandit

envs/latest.yml

@@ -24,6 +24,7 @@ dependencies:
   - pygam
   - pysteps
   - treelite
+  - tl2cgen
   # Development
   - astroid
   - bandit