exp: remove more code

Author: neutrinoceros

.github/workflows/build-test.yaml

@@ -11,9 +11,6 @@ defaults:
   run:
     shell: bash
 
-env:
-  HOMEBREW_NO_AUTO_UPDATE: 1
-
 jobs:
 
   build:
@@ -115,11 +112,15 @@ jobs:
       run: |
         source .venv/${{matrix.venv-loc}}/activate
         pytest yt --color=yes
+      env:
+        MPLCONFIGDIR: tests
     - name: Run Tests (nose)
       if: matrix.test-runner == 'nose'
       run: |
         source .venv/${{matrix.venv-loc}}/activate
         cat nose_ignores.txt | xargs python -m nose -c nose_unit.cfg --traverse-namespace
+      env:
+        MPLCONFIGDIR: tests
 
   image-tests:
     name: Image tests
@@ -157,13 +158,17 @@ jobs:
                --mpl-results-path=pytest_mpl_results \
                --mpl-baseline-path=tests/pytest_mpl_baseline \
                -rxXs # show extra info on xfailed, xpassed, and skipped tests
+      env:
+        MPLCONFIGDIR: tests
 
     - name: Generate new image baseline
       if: failure()
       run: |
         pytest yt --color=yes --mpl -m mpl_image_compare \
                --mpl-generate-path=pytest_mpl_new_baseline \
                --last-failed
+      env:
+        MPLCONFIGDIR: tests
 
     # always attempt to upload artifacts, even
     # (and especially) in case of failure.

tests/ci_install.sh

@@ -1,22 +1,5 @@
 set -x   # Show which command is being run
 
-# Sets default backend to Agg
-cp tests/matplotlibrc .
-
-# Step 1: pre-install required packages
-if [[ ${dependencies} == "full" || ${dependencies} == "cartopy" ]]; then
-    case ${RUNNER_OS} in
-    linux|Linux)
-        sudo apt-get -qqy update
-        sudo apt-get -qqy install \
-        libhdf5-serial-dev \
-        libnetcdf-dev \
-        libopenmpi-dev \
-        libfuse2
-        ;;
-    esac
-fi
-
 # Step 2: install deps and yt
 # installing in editable mode so this script may be used locally by developers
 # but the primary intention is to embed this script in CI jobs