[FIX] improve support for F statistics in compute_fixed_effects

.pre-commit-config.yaml

@@ -20,9 +20,6 @@ exclude: |
         | nilearn/_utils/data_gen.py
         | nilearn/reporting/html_report.py
         | nilearn/reporting/tests/test_html_report.py
-        | nilearn/glm/contrasts.py
-        | nilearn/glm/tests/test_contrasts.py
-        | nilearn/glm/tests/test_first_level.py
         | nilearn/interfaces/fmriprep/load_confounds_compcor.py
         | nilearn/interfaces/fmriprep/tests/test_load_confounds_utils.py
         | nilearn/interfaces/fmriprep/tests/test_load_confounds_strategy.py

doc/changes/latest.rst

@@ -55,6 +55,8 @@ Enhancements
 
 - Improve ``generate_report`` method of maskers by allowing users to pass a cmap argument for plotting image (:gh:`3897` by `Yasmin Mzayek`_)
 
+  - Improve ``contrasts`` allowing fixed effects on F contrasts (:gh:`3203` by `Bertrand Thirion`_)
+
 Changes
 -------