DX: colorize sphinx-build output (#481)

* DX: pass all environment variables in `tox` config

* MAINT: remove quotations from environment values

* MAINT: sort config keys in `tox.ini`

tox.ini

@@ -3,14 +3,11 @@ envlist =
   py,
   doc,
   sty,
-passenv = PYTHONPATH
 skip_install = True
 skip_missing_interpreters = True
 skipsdist = True
 
 [testenv]
-description =
-  Run all unit tests and doctests and compute test coverage
 allowlist_externals =
   pytest
 commands =
@@ -19,62 +16,52 @@ commands =
     --cov-report=html \
     --cov-report=xml \
     --cov=tensorwaves
+description =
+  Run all unit tests and doctests and compute test coverage
 
 [testenv:bench]
-description =
-  Run benchmark tests and visualize in histogram
 allowlist_externals =
   pytest
 commands =
   pytest {posargs:benchmarks} \
     --durations=0 \
     --benchmark-autosave \
     -k benchmark
+description =
+  Run benchmark tests and visualize in histogram
 
 [testenv:deps]
-description =
-  Visualize module dependencies
-deps =
-  pydeps
 changedir = src
 commands =
   pydeps tensorwaves \
     -o ../module_structure.svg \
     --exclude *._* \
     --max-bacon=1 \
     --noshow
-passenv = HOME
+deps =
+  pydeps
+description =
+  Visualize module dependencies
+passenv = *
 
 [testenv:doc]
-description =
-  Build documentation and API through Sphinx
 allowlist_externals =
   sphinx-build
-passenv =
-  EXECUTE_NB
-  GITHUB_REPO
-  GITHUB_TOKEN
-  READTHEDOCS_VERSION
 commands =
   sphinx-build \
-    --color \
     --keep-going \
     -TW \
     -b html \
     docs/ docs/_build/html
+description =
+  Build documentation and API through Sphinx
+passenv = *
+setenv =
+  FORCE_COLOR = yes
 
 [testenv:doclive]
-description =
-  Set up a server to directly preview changes to the HTML pages
 allowlist_externals =
   sphinx-autobuild
-passenv =
-  EXECUTE_NB
-  GITHUB_REPO
-  GITHUB_TOKEN
-  READTHEDOCS_VERSION
-  TERM
-  TF_GPU_ALLOCATOR
 commands =
   sphinx-autobuild \
     --open-browser \
@@ -97,76 +84,76 @@ commands =
     --watch docs \
     --watch src \
     docs/ docs/_build/html
-
-[testenv:docnb]
 description =
-  Build documentation through Sphinx WITH output of Jupyter notebooks
-passenv =
-  GITHUB_REPO
-  GITHUB_TOKEN
-  READTHEDOCS_VERSION
-  TF_GPU_ALLOCATOR
+  Set up a server to directly preview changes to the HTML pages
+passenv = *
 setenv =
-  EXECUTE_NB = "yes"
+  FORCE_COLOR = yes
+
+[testenv:docnb]
 allowlist_externals =
   sphinx-build
 commands =
   sphinx-build \
-    --color \
     --keep-going \
     -TW \
     -b html \
     docs/ docs/_build/html
+description =
+  Build documentation through Sphinx WITH output of Jupyter notebooks
+passenv = *
+setenv =
+  EXECUTE_NB = yes
+  FORCE_COLOR = yes
 
 [testenv:jax]
-description =
-  Run tests with JAX only
 allowlist_externals =
   pytest
 commands =
   pytest {posargs:} \
     -k "benchmark or not benchmark" \
     -k "not (ampform or four_momenta or numba or tensorflow or tf)" \
     --benchmark-disable
+description =
+  Run tests with JAX only
 
 [testenv:jcache]
-description =
-  Inspect Jupyter cache
 allowlist_externals =
   jcache
 changedir = docs/_build
 commands =
   jcache {posargs:notebook list}
+description =
+  Inspect Jupyter cache
 
 [testenv:linkcheck]
-description =
-  Check external links in the documentation (requires internet connection)
-passenv =
-  EXECUTE_NB
-  READTHEDOCS_VERSION
 allowlist_externals =
   sphinx-build
 commands =
   sphinx-build \
-    --color \
     -T \
     -b linkcheck \
     docs/ docs/_build/linkcheck
+description =
+  Check external links in the documentation (requires internet connection)
+passenv = *
+setenv =
+  FORCE_COLOR = yes
 
 [testenv:nb]
-description =
-  Run all notebooks with pytest
 allowlist_externals =
   pytest
 commands =
   pytest --nbmake {posargs:docs}
+description =
+  Run all notebooks with pytest
 
 [testenv:sty]
-description =
-  Perform all linting, formatting, and spelling checks
-setenv =
-  SKIP = pyright
 allowlist_externals =
   pre-commit
 commands =
   pre-commit run {posargs} -a
+description =
+  Perform all linting, formatting, and spelling checks
+setenv =
+  SKIP = pyright